Pan American Energy LLC, Argentine Branch



PAN AMERICAN ENERGY LLC
(ARGENTINE BRANCH)

FINANCIAL STATEMENTS AS OF DECEMBER 31, 2007
COMPARATIVE WITH THE PRIOR YEAR

CONTENTS

Auditors' report
Legal information
Balance sheet
Statement of income
Statement of cash flows
Notes to the financial statements
Exhibits A, B, C, D, E, F, G, H and I
Reporting summary
Supplementary information required by the Buenos Aires Stock Exchange

AUDITORS' REPORT ON FINANCIAL STATEMENTS

To the Legal Representative of
Pan American Energy LLC (Argentine Branch)
Av. Leandro N. Alem 1180 - 11th Floor
Buenos Aires
C.U.I.T.: 30-69554247-6

We examined the accompanying balance sheet of Pan American Energy LLC (Argentine
Branch) as of December 31, 2007 and the related statements of income and cash
flows, notes 1 to 15 and exhibits A, B, C, D, E, F, G, H and I for the year then
ended, comparative with the prior year. The preparation of these financial
statements is the responsibility of the Legal Representative of the Branch. Our
responsibility is to express an opinion on these financial statements based on
our audit.

We conducted our audit in accordance with auditing standards in force in the
Republic of Argentina. Those standards require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and the
reasonableness of the significant estimates made by management, as well as
evaluating the overall financial statement presentation. We believe that our
audit provides a reasonable basis for our opinion.

In relation to the financial statements as of December 31, 2006 and for the year
then ended, presented for comparative purposes, we issued an unqualified opinion
in our audit report dated March 9, 2007.

In our opinion, the financial statements referred to in the first paragraph
present fairly, in all material respects, the financial position of the Branch
as of December 31, 2007, the results of its operations and the changes in cash
flows for the year then ended, in conformity with the professional accounting
principles in force in the City of Buenos Aires (Republic of Argentina).

In compliance with rules and regulations in force, we report that:

a. the financial statements comply with the provisions of the Corporations Law
and the regulations on accounting documentation of the National Securities
Commission, they are transcribed in the Inventory Book and they derive from the
accounting records of the Branch maintained in Argentina which, in their formal
aspects, are kept pursuant to legislation in force. The information systems used
to process the data included in the financial statements are kept under the
security and integrity conditions based on which they were authorized;

b. we read the information included in the reporting summary (sections "Balance
sheet items", "Income statement items", "Statistical data" and "Ratios") and in
the supplementary information to the financial statements required by section 68
of the regulations of the Buenos Aires Stock Exchange, based on which, as far as
it relates to our area of responsibility, we have no observations;

c. as of December 31, 2007, the accrued liability for pension contributions
arising from the accounting records amounted to $ 6,649,458, no amounts being
due as of that date, and

d. as required by General Resolution No. 400 of the National Securities
Commission:

    --  the ratio between the total audit services invoiced to the Branch and
        the total amount invoiced to the Branch, including audit services, is
        0.59%;

    --  the ratio between the total audit services invoiced to the Branch and
        the total audit services invoiced to the Branch and its subsidiaries and
        affiliated companies is 0.80%, and

    --  the ratio between the total audit services invoiced to the Branch and
        the total amount invoiced to the Branch and its subsidiaries and
        affiliated companies is 0.51%.

Buenos Aires, March 7, 2008

SIBILLE

Graciela C. Laso

Partner

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)

FINANCIAL STATEMENTS as of December 31, 2007 for the fiscal year No. 11
beginning January 1, 2007 and ended December 31, 2007 comparatively presented
with the prior year

Stated in pesos

Legal address of the Branch: Av. Leandro N. Alem 1180 - 11th floor - Buenos
Aires

Main activity of the Branch: Oil and gas exploration and production

Date of registration with the Public Registry of Commerce: October 17, 1997

Registration number with the Inspection Board of Legal Entities: 1868, Book 54,
Volume B of Foreign Companies

Capital registered with the Inspection Board of Legal Entities: $ 200,000,000
under number 1257, Book 57, Volume B of Foreign Companies, and $ 21,779,007
under number 2106, Book 58, Volume B of Foreign Companies (Note 8)

Date of registration of capital with the Inspection Board of Legal Entities:
$ 200,000,000 on July 11, 2003 and $ 21,779,007 on December 12, 2005

Subscribed capital (paid in full): $ 221,779,007

HEAD OFFICE

Name: Pan American Energy LLC

Legal address: The Corporation Trust Company, Trust Corporation Center, 1209
Orange Street, Wilmington, Delaware - 19801 - United States of America

Main activity: Oil and gas exploration and production

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
BALANCE SHEET as of December 31, 2007 comparative with the prior year (in pesos)
                                                                       12/31/2007         12/31/2006
                                                               ------------------ ------------------
ASSETS
CURRENT ASSETS
Cash on hand and in banks (Note 4 a)                                   33,987,608         34,350,572
Investments (Exhibit C)                                               451,093,477        215,056,665
Accounts receivable (Note 4 b)                                        497,884,676        737,519,309
Other receivables (Note 4 c)                                           88,459,852        117,891,798
Inventories (Note 4 d)                                                189,479,197        130,809,611
                                                               ------------------ ------------------

Total current assets                                                1,260,904,810      1,235,627,955
                                                               ------------------ ------------------
NON CURRENT ASSETS
Other receivables (Note 4 e)                                           53,139,229         28,915,445
Investments (Exhibit C)                                                 9,533,846          8,719,558
Property, plant and equipment (Exhibit A)                           7,383,251,413      5,870,488,156
Intangible assets (Exhibit B)                                             390,469          1,918,767
                                                               ------------------ ------------------

Total non current assets                                            7,446,314,957      5,910,041,926
                                                               ------------------ ------------------

Total assets                                                        8,707,219,767      7,145,669,881
                                                               ================== ==================
LIABILITIES
CURRENT LIABILITIES
Accounts payable (Note 4 f)                                           645,049,836        661,464,349
Loans (Note 4 g)                                                      745,307,677        877,022,350
Payroll and social security contributions                              42,426,954         32,833,398
Taxes payable (Note 4 h)                                              271,153,439        465,157,941
Provision for future compensation to personnel (Exhibit D)              2,461,743          1,968,408
                                                               ------------------ ------------------

Total current liabilities                                           1,706,399,649      2,038,446,446
                                                               ------------------ ------------------
NON CURRENT LIABILITIES
Accounts payable (Note 4 i)                                            49,129,413         32,579,735
Loans (Note 4 j)                                                    2,984,559,219      2,265,642,982
Other liabilities (Note 3.2.j)                                        128,930,896         97,036,602
Deferred tax (Note 3.2.h and 11)                                      389,697,321        441,951,134
Provision for future compensation to personnel (Exhibit D)             15,241,426          9,797,018
Provision for environmental remediation (Exhibit D)                    82,182,464        122,553,250
Accruals (Exhibit D)                                                   20,217,498         19,903,786
                                                               ------------------ ------------------

Total non current liabilities                                       3,669,958,237      2,989,464,507
                                                               ------------------ ------------------

Total liabilities                                                   5,376,357,886      5,027,910,953

Account with Head Office (Note 7)                                   2,869,622,874      1,656,519,921
Capital allocated to the Branch (Note 8)                              221,779,007        221,779,007
Capital adjustment                                                    239,460,000        239,460,000
                                                               ------------------ ------------------

Total                                                               8,707,219,767      7,145,669,881
                                                               ================== ==================

The accompanying notes and exhibits are an integral part of these financial
statements.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
STATEMENT OF INCOME for the year ended December 31, 2007 comparative with the prior year (in pesos)
                                                      2007                          2006
                                         ------------------------------ -----------------------------

Sales                                                     5,529,608,286                 5,349,672,587
Cost of sales (Exhibit E)                               (2,690,291,924)               (2,379,583,352)
                                                        ---------------               ---------------

Gross profit                                              2,839,316,362                 2,970,089,235

Administrative expenses (Exhibit G)                      ( 266,094,396)                ( 226,429,454)
                                                        ---------------               ---------------

Operating income                                          2,573,221,966                 2,743,659,781

Financial results
 Generated by assets
  Interest                                   35,470,760                    56,391,423
  Exchange gains/losses                      19,684,649                    10,169,992
    Other financial results                ( 1,001,993)      54,153,416     2,293,677      68,855,092
                                         --------------                 -------------

 Generated by liabilities
  Interest                               ( 262,155,875)                 (179,682,702)
  Exchange gains/losses                   ( 74,320,337)                 ( 21,319,803)
    Other financial results               ( 51,996,033)  ( 388,472,245) ( 25,082,167)  ( 226,084,672)
                                         --------------                 -------------

Other income and expenses - net (Note
 3.2.j
and Exhibit D, lines 9 and 11)                            ( 24,199,544)                 ( 41,522,382)
                                                        ---------------               ---------------

Income before income tax                                  2,214,703,593                 2,544,907,819

Income tax expense - current (Note 3.2 h
 and 11)                                                 ( 831,214,623)                ( 896,407,452)

Income tax (expense) benefit - deferred
(Note 3.2.h and 11)                                          52,253,813                  ( 3,463,245)
                                                        ---------------               ---------------

Net income (Note 7)                                       1,435,742,783                 1,645,037,122
                                                        ===============               ===============

The accompanying notes and exhibits are an integral part of these financial
statements.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
STATEMENT OF CASH FLOWS for the year ended December 31, 2007 comparative with the prior year (in pesos)
                                                                                2007              2006
                                                                          ------------------ ----------------

Cash provided by operations:

  Net income                                                                  1,435,742,783    1,645,037,122

  Adjustments to reconcile net income with the cash provided by
   operations

  Depreciation of property, plant and equipment                                 769,123,691      638,177,818
  Amortization of intangible assets                                               1,528,298        2,215,059
  Income tax expense                                                            831,214,623      896,407,452
  Net (decrease) increase in allowances for bad debtors, obsolescence of
   materials
    and accruals for lawsuits                                                   ( 7,678,801)       2,283,351
  Gain on disposal of property, plant and equipment                              45,388,175        1,421,822
  Increase in provision for future compensation to personnel                      8,281,606        7,395,291
  Net increase in the provision for environmental remediation                     6,634,369        4,478,360
  Other non-cash items (1)                                                      214,691,173      159,537,645

     Changes in assets, liabilities and account with Head Office:

  Decrease (increase) in accounts receivable                                    248,450,322    ( 203,963,920)
  Increase in inventories                                                      ( 59,114,874)     ( 8,197,255)
  Decrease in other current receivables                                          29,431,946       32,203,095
  (Increase) decrease in other non current receivables                         ( 24,223,784)      42,988,316
      Increase in accounts payable, payroll and social security
       contributions,
taxes payable and other liabilities                                              65,114,075      235,305,695
  Compensation paid to personnel pursuant to defined benefit plans              ( 2,343,863)     ( 2,175,319)
  Payments related to lawsuits                                                    ( 377,888)       ( 859,383)
  Income tax paid                                                            (1,048,710,185)   ( 792,704,461)
                                                                          ------------------ ----------------
Net cash provided by operations                                               2,513,151,666    2,659,550,688
                                                                          ================== ================

Cash used in investing activities:

  Increase in long-term investments                                               ( 814,288)     ( 3,028,365)
  Acquisition of property, plant and equipment                               (2,391,212,746)  (1,696,444,812)
  Additions of intangible assets                                                          -        ( 417,106)
  Proceeds from the sale of property, plant and equipment                        16,932,468        1,839,882
                                                                          ------------------ ----------------
Cash used in investing activities                                            (2,375,094,566)  (1,698,050,401)
                                                                          ------------------ ----------------

Cash provided by (used in) financing activities:

  Increase in loans (net)                                                       320,256,578      954,727,802
  Net activity with Head Office                                               ( 222,639,830)  (2,050,114,950)
                                                                          ------------------ ----------------
Cash provided by (used in) financing activities                                  97,616,748   (1,095,387,148)
                                                                          ------------------ ----------------

Net increase (decrease) in cash                                                 235,673,848    ( 133,886,861)

Cash at beginning of year (2)                                                   249,407,237      383,294,098
                                                                          ------------------ ----------------

Cash at year-end (2)                                                            485,081,085      249,407,237
                                                                          ================== ================

(1) It is made up of:
       Exchange gains/losses and other financial results relating to
        loans and other                                                         266,944,986      156,074,400
       Deferred income tax expense (benefit)                                   ( 52,253,813)       3,463,245
                                                                          ------------------ ----------------
       Total                                                                    214,691,173      159,537,645
                                                                          ================== ================
(2) Cash and banks plus investments becoming due within three months.

The accompanying notes and exhibits are an integral part of these financial
statements.

NOTES TO THE FINANCIAL STATEMENTS as of December 31, 2007 comparative with the
prior year (in pesos)

NOTE 1 - THE BRANCH

Pan American Energy LLC (Argentine Branch) is engaged in the exploration,
development and production of hydrocarbons.

On October 30, 1997, a definitive agreement for the transfer of assets and
liabilities was entered into between Amoco Argentina Oil Company (Argentine
Branch) and Pan American Energy LLC (Argentine Branch) hereinafter "the Branch",
whereby Amoco Argentina Oil Company (Argentine Branch) transferred its business
consisting of assets and liabilities to the Branch, effective on October 8,
1997.

On May 1, 1998 a definitive agreement for the transfer of assets and liabilities
was entered into between Pan American Continental S.R.L. and the Branch, whereby
Pan American Continental S.R.L. transferred to the Branch its business
consisting of the assets and liabilities except for the name Pan American
Continental.

NOTE 2 - OPERATIONS OF THE BRANCH

The following table summarizes the main operations, blocks and joint ventures in
which the Branch is or was involved during the year ended December 31, 2007.

               Activity                       Main blocks/ operations
                                                                             Ownership      Branch's
                                                                              interest     participation
--------------------------------------- ------------------------------------ ---------- ------------------
Oil and gas production and development  Cerro Drag�n                            100.00% Operator
                                        Piedra Clavada                          100.00% Operator
                                        Koluel Kaike                            100.00% Operator
                                        Lindero Atravesado                       62.50% Operator
                                        Anticlinal Funes                         80.00% Operator
                                        Acambuco                                 52.00% Operator
                                        Aguada Pichana                           18.18% Non operator
                                        San Roque                                16.47% Non operator
                                        Estancia La Escondida (1)                25.00% Non operator
Oil and gas exploration and development Acambuco "B"                            100.00% Operator
                                        Bandurria                                18.18% Non operator
                                        Costa Afuera Argentina "CAA-40"          50.00% Non operator
                                        Costa Afuera Argentina "CAA-46"          50.00% Non operator
                                        Centro Golfo San Jorge Marina Chubut     90.00% Operator

Explanations:

(1) The Joint Venture agreement (UTE) governing the relationships between the
holders of concession states that their participating interests in rights,
obligations and interests inherent in the property including production, will be
distributed based on the depth from which production is obtained: in the deep
area, the Branch has a 75% interest and the co-holder has the remaining 25%; in
the shallow area from which current total production is obtained, the Branch has
a 25% interest and the co-holder the remaining 75%; and in the area
"Descubrimiento El Zanj�n", both parties hold a 50% interest. The average
interest described grants the Branch a 50% interest in the rights over the
property, regardless the percentage thereof in the concession.

NOTE 3 - ACCOUNTING PRINCIPLES

3.1 Reporting currency

In accordance with Decree 664/2003 and General Resolution No. 441/2003 of the
National Securities Commission ("Comisi�n Nacional de Valores" or CNV), the
Branch discontinued the application of inflation accounting as from March 1,
2003.

From January 1, 2002 to February 28, 2003, the Branch applied the inflation
accounting methodology set forth by Technical Resolution No. 6, amended by
Technical Resolutions Nos. 17 and 19 of the Argentine Federation of Professional
Councils of Economic Sciences (FACPCE) and by the Professional Council of
Economic Sciences of the City of Buenos Aires (CPCECABA), using indexes derived
from the Internal Wholesale Price Index.

3.2 Valuation and presentation principles

a) Presentation

The financial statements are presented in accordance with the presentation
principles established by the accounting standards generally accepted in the
City of Buenos Aires (Republic of Argentina) and pursuant to the provisions of
the CNV.

Investments to become due or to be realized in the short term (3 months) are
considered a cash equivalent in the statement of cash flows.

Certain reclassifications were made to the financial statements presented as
comparative information to conform them to the presentation used in this fiscal
year.

b) Participating interest in joint ventures

The Branch is engaged in exploration and production activities in certain areas
through its participation in joint ventures with other companies. The account
balances reflecting the joint ventures' assets, liabilities, income and expenses
are proportionately consolidated in these financial statements.

c) Foreign currency

Assets and liabilities denominated in foreign currency as listed in Exhibit F
have been stated in Argentine Pesos at the exchange rate prevailing at the end
of each fiscal year. The resulting exchange gains/losses are presented in the
financial results line (provided by either assets or liabilities, as applicable)
of the Statement of Income.

d) Inventories

Crude oil is stated at reproduction cost.

Spare parts, materials and raw materials are stated at the latest acquisition
cost.

Goods in transit are stated at acquisition cost plus import expenses.

Advances to suppliers are valued at the amounts actually incurred.

The carrying value of inventories, taken as a whole and after considering the
allowance for obsolescence (see Note 3.2.g), does not exceed their recoverable
value.

e) Property, plant and equipment

Property, plant and equipment is stated at acquisition cost as indicated in Note
3.1 less the related accumulated depreciation. The acquisition cost includes all
the necessary costs incurred in order to put the assets in working condition.

Depreciation is calculated by applying the straight-line method over the
estimated useful lives of the assets and/or the duration of the contracts, as
applicable, except for production wells, equipment and services, which are
depreciated as per the units of production method.

The pre-operating costs of the properties in the exploration stage, except for
geology and geophysics related expenses that are charged to the Statement of
Income as incurred, remain capitalized for a given period based on the
characteristics of each property, without exceeding five years considered as
from the completion of the exploration stage or, if applicable, as from
production interruption, unless:

1. it is expected that explored areas will proceed to the commercial production
stage, in which case the referred costs remain capitalized, or

2. during the referred five year period, management estimates that commercial
production will not be feasible, in which case, the referred costs are expensed.

For property, plant and equipment existing as of January 6, 2002, the
acquisition or construction of which resulted in outstanding liabilities
denominated in foreign currency - exchange gains/losses resulting from restating
such liabilities totaling $1,832,303,600 through July 28, 2003 were capitalized
pursuant to specific accounting principles, based on the determination of the
direct or indirect ratio between the assets subject to capitalization and the
outstanding liabilities in foreign currency. The assets or group of assets
eligible for the capitalization of exchange gains/losses have remained
unchanged. Such capitalization of exchange gains/losses was performed in
proportion to the balance of the original value of the referred assets not
subject to depreciation. Additionally, exchange gains and losses were
capitalized up to the limit arising from the comparison between the replacement
or reproduction cost of the assets and their recoverable value.

For the purposes of presenting the financial statements in constant currency
(see Note 3.1), the capitalized exchange gains/losses amounting to $
1,832,303,600 are considered an anticipated inflation adjustment until such
differences are absorbed thereby. The excess of capitalized exchanges losses
over the restated amounts totals $ 85,358,131 as of December 31, 2007.

The net carrying value of property, plant and equipment, taken by group of
assets of similar characteristics, does not exceed their estimated value in use
based on the information available as of the date of issuance of the financial
statements.

f) Intangible assets

These are pre-production geological expenditures and acquisition cost of blocks
valued at restated cost as indicated in Note 3.1., less the related accumulated
amortization. Amortization is calculated as per the units of production method.

g) Allowances, provisions and accruals

Allowances deducted from assets:

- For bad debtors: they are determined following the detailed analysis of the
credit status of each customer.

- For obsolescence of materials: the Branch creates an allowance for those
assets evidencing significant slow movement based on a specific analysis.

Accruals:

- For lawsuits: they are determined considering the potential costs of those
lawsuits filed against the Branch based on the opinion of legal counsel.

Provisions:

- For future compensation to personnel: they are estimated as a percentage of
compensation paid, calculated in terms of actuarial methods, and can be applied
to compensate employees of the Branch who have complied with certain seniority
requirements defined by the Branch. Payments are deducted from the related
provision.

- For environmental remediation: calculated on the basis of well-abandonment
forecasts until the expiration of agreements, at present values.

h) Income tax

The Branch applies the deferred tax method to account for income tax. Based on
the referred method, the current income tax is calculated by applying the rates
prevailing as of December 31, 2007 and 2006 on taxable income; and the future
tax effect of the temporary differences in the book and tax values of assets and
liabilities and the tax loss carryforwards, if any, are recognized as deferred
tax assets or liabilities.

The deferred tax assets are recognized only to the extent of their
recoverability.

i) Use of estimates

The preparation of the financial statements in accordance with generally
accepted accounting principles requires that the management of the Branch makes
estimates about the value of certain assets and liabilities, including
contingent liabilities, as well as the amounts informed of certain income and
expenses generated during the fiscal year.

The final amounts may differ from the estimates used in the preparation of the
financial statements.

j) Defined benefit pension plans

The Branch implemented a pension plan for the benefit of its personnel called
"Plan Puente" or "Bridge Plan". The amount accrued upon the implementation of
such plan amounts to $ 128,930,896 ($ 97,036,602 as of December 31, 2006)
presented under Other non current liabilities, out of which the amount of
$ 32,152,231 accrued in the fiscal year ended December 31, 2007. Such amount is
made up of $ 244,526,834 of nominal value less $ 115,292,099 corresponding to
the financial effect from the discount to present value and payments in the
amount of $ 303,839.

In the fiscal year ended December 31, 2006, the amount accrued in connection
with the referred "Plan Puente" was $ 27,394,646. Such amount was made up of
$ 169,818,815 of nominal value less $ 72,736,311 corresponding to the financial
effect from the discount to present value and payments in the amount of $
45,902.

As of December 31, 2007 and 2006, the relevant actuarial information related to
the pension plans for the benefit of personnel included herein and in Note 3.2.g
under Other liabilities, Provisions for future compensation to personnel and
Account with Head Office is as follows:

                                                                      2007               2006
                                                               ------------------ ------------------

Cost of benefits accrued at beginning of year                         130,160,026         96,784,802
Service cost (1) (Exhibit D)                                            9,119,269          6,350,558
Interest (2)                                                           18,435,178         14,296,029
Benefits paid                                                        ( 4,278,590)       ( 2,071,223)
Actuarial losses (1) (Exhibit D)                                       13,397,780         14,799,860
                                                               ------------------ ------------------
Obligation at year-end                                                166,833,663        130,160,026
                                                               ================== ==================

(1) Included under Cost of sales and Administrative expenses of the statement of
income (See Exhibit G)

(2) Included under Other financial results provided by liabilities of the
statement of income

Main actuarial assumptions used

Actual rate of long term compensation increase (net of
 inflation)                                                            1%                 1%
Interest rate                                                          4%                 4%

k) Revenue recognition

Revenue derived from the sale of hydrocarbons is recognized when the significant
risks and rewards of ownership have been transferred to the purchaser.

The Branch uses the production method to recognize revenues from the sale of
crude oil. In those cases where the Branch has a shared interest with other
producers, revenues are recorded upon the basis of the interest held in each
joint venture.

In order to recognize revenues from the sale of gas, the Branch uses the sales
method, whereby these revenues are recorded on the basis of the actual volumes
delivered to purchasers irrespective of whether they result form the Branch's
own output or from the output shared with other producers.

l) Lease agreements

The Branch leases the space occupied by its offices, which agreements are of an
operating nature and, therefore, the rental expense incurred is recognized in
the Statement of income as it accrues.

The lease expenditur, broken down by maturity dates, are reported below:

                                                   Nominal value
                                          -------------------------------
Up to a year                              US$ 2,668,732 and $ 1,201,897
Over one year and up to five years        US$ 2,590,299 and $ 1,773,099

During the year ended December 31, 2007, the Branch recognized an expense of
$ 9,461,634 related to such lease agreements presented in the line Buildings
Rentals and Maintenance in Exhibit G.

m) Enactment of new technical resolutions and other regulations

In line with General Resolution No. 487/2006 of the CNV, the Branch has
considered the currency restatement of property, plant and equipment as a
temporary difference for the purposes of the deferred tax calculation.
Consequently, at the beginning of the fiscal year 2006, an increase in the net
deferred tax liabilities amounting to $229,088,577 was recognized, as well as an
adjustment to prior year results (loss) presented as part of the Account with
Head Office (Note 7).

As required by Resolution No. 487/2006 of the CNV in connection with the
recoverable values of assets, at the balance sheet date no indicators exist that
the carrying value of the assets exceeds the recoverable value.

NOTE 4 - BREAKDOWN OF CERTAIN BALANCE SHEET ACCOUNTS

NOTE 4 - BREAKDOWN OF CERTAIN BALANCE SHEET ACCOUNTS
                                                                       12/31/2007         12/31/2006
                                                               ------------------ ------------------
ASSETS
CURRENT ASSETS
a) Cash and banks
  Cash on hand in local currency                                          219,522            141,977
  Cash on hand in foreign currency (Exhibit F)                            185,683            232,722
  Cash in banks in local currency                                      33,403,569         24,481,235
  Cash in banks in foreign currency (Exhibit F)                           178,834          9,494,638
                                                               ------------------ ------------------

  Total                                                                33,987,608         34,350,572
                                                               ================== ==================
b) Accounts receivable
  Accounts receivable in local currency                               120,830,313         73,659,586
  Allowance for bad debtors in local currency (Exhibit D)           ( 10,197,186)       ( 4,983,016)
  Accounts receivable in foreign currency (Exhibit F)                 387,251,549        682,872,598
  Allowance for bad debtors in foreign currency (Exhibits D
and F)                                                                          -      ( 14,029,859)
                                                               ------------------ ------------------

  Total                                                               497,884,676        737,519,309
                                                               ================== ==================
c) Other receivables
  Loans to personnel                                                    9,436,752          8,490,283
  Tax credits                                                          11,845,980         24,907,001
  Expenses recoverable in local currency                                5,105,747          7,310,337
  Expenses recoverable in foreign currency (Exhibit F)                  1,923,308          1,284,463
  Prepaid expenses in local currency                                   14,164,348          7,648,706
  Miscellaneous in local currency                                      34,220,853         39,819,127
  Miscellaneous in foreign currency (Exhibit F)                         9,476,145         28,032,599
  Affiliated companies in foreign currency (Note 9
and Exhibit F)                                                          2,286,719            399,282
                                                               ------------------ ------------------

  Total                                                                88,459,852        117,891,798
                                                               ================== ==================
d) Inventories
  Crude oil in stock                                                  116,679,969         69,704,063
  Spare parts, materials and raw materials                             56,281,193         47,997,293
                                                               ------------------ ------------------

  Subtotal (Exhibit E)                                                172,961,162        117,701,356

  Allowance for obsolescence of materials (Exhibit D)                ( 3,309,418)       ( 2,864,130)
                                                               ------------------ ------------------

  Subtotal                                                            169,651,744        114,837,226

  Goods in transit                                                     14,921,350          7,924,880
  Advances to suppliers in local currency                               4,333,388          7,765,719
  Advances to suppliers in foreign currency (Exhibit F)                   572,715            281,786
                                                               ------------------ ------------------

  Total                                                               189,479,197        130,809,611
                                                               ================== ==================

NON CURRENT ASSETS
e) Other receivables
  Loans to personnel                                                   11,037,708          3,837,996
  Prepaid expenses in local currency                                    1,377,539          4,534,641
  Miscellaneous in local currency                                      26,419,281          6,517,545
  Miscellaneous in foreign currency (Exhibit F)                        14,304,701         14,025,263
                                                               ------------------ ------------------

  Total                                                                53,139,229         28,915,445
                                                               ================== ==================

LIABILITIES
CURRENT LIABILITIES
f) Accounts payable
  Trade payables in local currency                                    440,920,083        449,624,468
  Trade payables in foreign currency (Exhibit F)                      159,701,798        167,263,681
  Expenses payable in local currency                                   39,244,409         34,598,789
  Affiliated companies in foreign currency (Note 9 and
Exhibit F)                                                              5,183,546          9,977,411
                                                               ------------------ ------------------

  Total                                                               645,049,836        661,464,349
                                                               ================== ==================
g) Loans
  Bonds in foreign currency (Exhibit F)                                         -        306,200,000
  Unsecured notes payable in local currency                           263,824,044        275,057,276
  Secured notes payable in foreign currency
(Exhibit F)                                                                     -          4,172,593
  Unsecured notes payable in foreign currency
(Exhibit F)                                                           405,650,487        226,105,569
  Interest accrued on bonds and notes payable in foreign
currency (Exhibit F)                                                   75,833,146         65,486,912
                                                               ------------------ ------------------

  Total                                                               745,307,677        877,022,350
                                                               ================== ==================
h) Taxes payable
  Income tax provision net of prepayments                             174,142,115        391,273,549
  Tax on sales and production of hydrocarbons                          87,217,728         64,989,555
  Other                                                                 9,793,596          8,894,837
                                                               ------------------ ------------------

  Total                                                               271,153,439        465,157,941
                                                               ================== ==================

NON CURRENT LIABILITIES
i) Accounts payable
  Miscellaneous liabilities in local currency                          31,777,958         15,707,663
  Miscellaneous liabilities in foreign currency (Exhibit F)            17,351,455         16,872,072
                                                               ------------------ ------------------

  Total                                                                49,129,413         32,579,735
                                                               ================== ==================
j) Loans
  Affiliated companies in local currency (Note 9)                               -        446,709,189
  Bonds in foreign currency (Exhibit F)                             1,102,150,000      1,071,700,000
  Unsecured notes payable in foreign currency
(Exhibit F)                                                         1,882,409,219        747,233,793
                                                               ------------------ ------------------

  Total                                                             2,984,559,219      2,265,642,982
                                                               ================== ==================

NOTE 5 - ISSUANCE OF BONDS

On February 11, 1997, Amoco Argentina Oil Company (Argentine Branch) issued the
Second Series of bonds in the amount of US$ 100,000,000 due in ten years, at an
annual 6.75% rate. The bonds were paid upon maturity on February 1, 2007. Such
issueance was made under the short and medium term bond program for a total
maximum amount of US$ 200,000,000 authorized by the CNV through Resolution No.
10982 on July 13, 1995.

As a result of the transfer of assets and liabilities referred to in the second
paragraph of Note 1 to these financial statements, Amoco Argentina Oil Company
(Argentine Branch) transferred the above mentioned bonds to Pan American Energy
LLC (Argentine Branch). Such bonds were guaranteed by BP Company North America
Inc. until repayment in February 2007.

On February 21, 2002, through Resolution No. 14123, the CNV authorized the
Global Program for the Issuance of Bonds of Pan American Energy LLC (Argentine
Branch) (the "Global Program") in the total amount of US$ 1,000,000,000.

On October 27, 2004, the Branch issued the Bonds Class 3 in the amount of
US$100,000,000 under the Global Program. The bonds become due in five years
(October 27, 2009) with a 7.125% annual fixed interest rate to be paid on a
half-yearly basis. The price of the issuance was 99.483% of the nominal value.
The funds obtained from this issuance were allocated to investments in property,
plant and equipment and repayment of loans.

On August 9, 2006, the Branch issued the Bonds Class 4 in the amount of US$
250,000,000 under the Global Program, to be repaid in two equal installments
becoming due on February 9, 2011 and February 9, 2012, with interest accruing at
an annual fixed interest rate of 7.75% to be paid on a half-yearly basis. The
price of the issuance was 100.00% of the nominal value. The funds obtained from
this issuance were allocated to investments in property, plant and equipment and
repayment of loans.

The Bonds Class 3 and Class 4 are guaranteed by Pan American Energy LLC.

NOTE 6 - OTHER FINANCIAL LIABILITIES

Pan American Energy LLC (Argentine Branch) obtained the following loans at a
five-year term, with interest compounded bi-annually amortized in monthly
installments: 1) On July 20, 2001, in the amount of US$ 72,051,406, with
interest accruing at an annual rate of 7.54%, with the first installment falling
due on April 19, 2002 and the repayment term being completed on June 20, 2006,
and 2) on September 17, 2001, in the amount of US$ 40,001,944, with interest
accruing at an annual rate of 6.72%, with the first installment falling due on
June 20, 2002 and completing repayment on August 21, 2006. For the purpose of
fixing the interest rate, the Branch entered into integrated derivative
transactions, the impact of which has been included in the cost of the
transactions. Both loans were guaranteed by Pan American Energy LLC until the
repayment thereof in June and August 2006.

On July 11, 2005, the Branch obtained from the International Finance Corporation
(IFC) a loan in the amount of US$ 250,000,000 guaranteed by Pan American Energy
LLC and consisting of three tranches:

- "A" in the amount of US$ 100,000,000, with interest accruing at an annual
fixed rate of 7.56%, through an interest rate swap with IFC, amortizable on a
six-month installments basis and becoming due in July 2015;

- "B" in the amount of US$ 135,000,000, at an annual fixed rate of 6.97%,
through an interest rate swap with IFC, amortizable on a six-month installments
basis, and becoming due in July 2012, and

- "C" in the amount of US$ 15,000,000, at an annual fixed base rate of 5.66%
plus additional interest calculated in relation to Pan American Energy LLC�s
economic performance, becoming due in July 2016.

The first repayment of principal for tranches "A" and "B" was made on January
15, 2007.

The funds obtained were used to partially fund the 2005 investment program in
San Jorge Gulf.

On July 13, 2007, the Branch obtained from IFC a loan in the amount of US$
550,000,000, consisting of two tranches that accrue interest at a variable rate:

- "A" in the amount of US$ 150,000,000 amortizable on a half yearly basis and
becoming due in April 2018; and

- "B", Sub-tranch "1" in the amount of US$ 158,500,000 amortizable on a half
yearly basis and becoming due in April 2014 and Sub-tranch "2" in the amount of
US$ 241,500,000 amortizable on a half yearly basis and becoming due in April
2015.

The loan is guaranteed by Pan American Energy LLC and the funds obtained are
being applied to partially fund the investment program that the Company will
undertake in the Cerro Drag�n area in San Jorge Gulf basin located in the
provinces of Santa Cruz and Chubut.

As of December 31, 2007, the amount of US$ 400,000,000 of such loan had been
disbursed. The remaining US$ 150,000,000 was disbursed in January 2008.

The Branch considers that its access to credit lines is appropriate in order to
meet its commercial and financial obligations, even though it presents a
negative working capital as of December 31, 2007.

NOTE 7 - ACCOUNT WITH HEAD OFFICE

The changes in the account with Head Office during the fiscal years ended
December 31, 2007 and 2006 are as follows:

                                                                Fiscal year        Fiscal year
                                                                    ended             ended
                                                                 12/31/2007        12/31/2006
                                                              ---------------- -------------------

Balance at beginning of fiscal year of Account with Head
 Office                                                          1,656,519,921       2,290,686,326
Adjustment to prior-fiscal year results (Note 3.2.m)                         -      ( 229,088,577)
                                                              ---------------- -------------------
Balance at beginning of the fiscal year of Account with Head
 Office after
adjustment                                                       1,656,519,921       2,061,597,749

Net activity with Head Office                                   ( 222,639,830)     (2,050,114,950)
Transfer of net income                                           1,435,742,783       1,645,037,122
                                                              ---------------- -------------------
Net changes for the fiscal year                                  1,213,102,953      ( 405,077,828)
                                                              ---------------- -------------------

Balance at fiscal year-end of Account with Head Office (1)       2,869,622,874       1,656,519,921
                                                              ================ ===================

(1) As of December 31, 2007 and December 31, 2006 balances are stated in local
currency.

NOTE 8 - CAPITAL ALLOCATED TO THE BRANCH

Pursuant to the Consent Action taken by the members on December 27, 2001, Pan
American Energy LLC allocated capital to the Branch in the amount of $
200,000,000. Such capital is registered with the Public Registry of Commerce. In
accordance with the Consent Action dated February 1, 2005, Pan American Energy
LLC allocated capital to the Branch in the amount of $ 21,779,007. Such capital
contribution represents the contribution of assets and liabilities of the areas
Anticlinal Funes and R�o Barrancas made by Head Office within the scope of the
corporate reorganization registered in the State of Delaware, USA and in the
Public Registry of Commerce of the City of Buenos Aires on December 12, 2005
under number 2106, Book 58, Volume B of Foreign Companies.

NOTE 9 - TRANSACTIONS AND BALANCES WITH AFFILIATED COMPANIES

The transactions and balances with Pan American Energy LLC, the Branch's Head
Office, are disclosed in note 7.

The transactions and balances with affiliated companies are detailed below:

                                                         2007              2006
                                                  -----------------------------------
TRANSACTIONS
Pan American Fueguina S.A.
  Purchases                                                        -          899,281
  Financing                                            (446,709,189)      446,709,189
Pan American Sur S.A.
  Lending of LPG                                        ( 8,181,231)        8,181,231
  Gas purchases                                            3,273,306                -
PAE E & P Bolivia Ltd.
  Purchases and hiring of services                           871,594                -
PAE Oil & Gas Bolivia Ltd.
  Purchases and hiring of services                         1,015,843           52,482
BP West Coast Products LLC
  Sales                                                  749,493,336    1,197,372,640
BP America Production Company
  Services                                                 2,425,167        5,299,091

NOTE 9 - TRANSACTIONS AND BALANCES WITH AFFILIATED COMPANIES (cont.)

                                            12/31/2007            12/31/2006
                                     ------------------------ -------------------
BALANCES
Pan American Fueguina S.A.
  Accounts payable                                          -             899,281
  Loans                                                     -         446,709,189
Pan American Sur S.A.
  Accounts payable                                  3,273,306           8,181,231
PAE E & P Bolivia Ltd.
  Other receivables                                 1,165,277             293,683
PAE Oil & Gas Bolivia Ltd.
  Other receivables                                 1,121,442             105,599
BP America Production Company
  Accounts payable                                  1,910,240             896,899

NOTE 10 - GUARANTEES AND OTHER COMMITMENTS

In terms of investment commitments, the Branch has not granted any guarantees as
of December 31, 2007.

The terms and conditions in certain loan agreements include commitments assumed
by the Branch referring to the maintenance of certain indebtedness and debt
service ratios and certain restrictions on the distribution of dividends. As of
December 31, 2007, the Branch complied with all the commitments assumed in loan
agreements.

The Branch signed the agreement entered into between producers and refineries on
January 2, 2003 for the stability of the prices of crude oil, gasoline and gas
oil (Resolution No. 85/2003 of the Energy Department), in force until April 30,
2004. The Branch has complied with the quotas set forth in the crude oil
agreement. Such deliveries were stated at spot price upon carrying out the
transaction, giving rise to a contingent receivable of $ 10,601,137 as of
December 31, 2007, in favor of the Branch, which has not been recorded. Such
receivable will be collected when the crude oil WTI price falls below US$28.50
per barrel. The price thereof was US$ 96.00 as of December 31, 2007.

On February 27, 2006 the Branch executed an agreement with Shell C.A.P.S.A.
whereby Shell agreed to pay the Branch a total negotiated price of $86,499,326
in connection with deliveries of crude oil made in 2003 and 2004 under the price
stabilization agreement referred to in the preceding paragraph, and $ 14,032,834
as interest accrued. The Branch agreed to waive further claims in connection
with said deliveries. The related revenue was recognized in the year ended
December 31, 2006. Additionally, in September 2007, the Branch executed an
agreement with ESSO Petrolera Argentina S.R.L., whereby such company agreed a
total negotiated price of $ 7,966,366 in connection with deliveries of crude oil
made in 2003 and 2004 also under the price stabilization agreement referred to
above and $ 2,445,974 as interest. The Branch agreed to waive further claims in
connection with said deliveries. The related revenue was recognized in the
fiscal year ended December 31, 2007.

NOTE 11 - INCOME TAX

The breakdown of the main deferred tax assets and liabilities is as follows:

                                                                 12/31/2007          12/31/2006
                                                             ------------------- ------------------

Deferred tax assets
   Allowance of materials obsolescence                                 1,158,296          1,002,446
   Provision for future compensation to personnel                      6,093,622          4,296,053
   Accrual for lawsuits                                                7,278,725          7,082,362
   Provision for environmental remediation                            11,231,039          9,835,326
   Other provisions and allowances                                    18,656,518         18,174,616
                                                             ------------------- ------------------

Total deferred tax assets                                             44,418,200         40,390,803
                                                             ------------------- ------------------

Deferred tax liabilities
   Inventories - materials and spare parts                               890,517            962,248
   Property, plant and equipment                                     392,076,489        458,338,264
   Other                                                              41,148,515         23,041,425
                                                             ------------------- ------------------

Total deferred tax liabilities                                       434,115,521        482,341,937
                                                             ------------------- ------------------

Net deferred tax liabilities                                         389,697,321        441,951,134
                                                             =================== ==================

The reconciliation between the income tax expense for the fiscal year and that
resulting from applying the prevailing tax rate to income before tax is as
follows:

                                                                    2007                2006
                                                             ------------------- ------------------

Net income before taxes                                            2,214,703,593      2,544,907,819

Prevailing tax rate                                                          35%                35%
                                                             ------------------- ------------------
Net income at prevailing tax rate                                 ( 775,146,258)     ( 890,717,737)

Permanent differences at the tax rate:
   Miscellaneous - net                                              ( 3,814,552)       ( 9,152,960)
                                                             ------------------- ------------------

Subtotal permanent differences at the tax rate                      ( 3,814,552)       ( 9,152,960)
                                                             ------------------- ------------------

Income tax - total                                                ( 778,960,810)     ( 899,870,697)
                                                             =================== ==================

Current income tax expense                                        ( 831,214,623)     ( 896,407,452)
Deferred income tax benefit (expense)                                 52,253,813       ( 3,463,245)
                                                             ------------------- ------------------
                                                                  ( 778,960,810)     ( 899,870,697)
                                                             =================== ==================

NOTE 12 - RESTRICTED ASSETS

In November 2006, the Branch collected a bank deposit made in its own name as a
collateral for a loan from a foreign bank in fiscal year 2003. Such bank deposit
amounted to US$ 2,505,351.

In August 2007, the Branch collected a bank deposit made in its own name as a
collateral for a loan from a foreign bank in fiscal year 2005. Such bank deposit
amounted to US$ 1,764,705.

In August 2007, the pledge of two generators was settled in the amount of US$
7,483,776. Such equipment was granted as a collateral for outstanding accounts
payable that were paid in June 2007.

Therefore, there are no restricted assets as of December 31, 2007.

NOTE 13 - INFORMATION ON LITIGATION AND OTHER SUPPLEMENTARY MATTERS

Lawsuits were filed against the Branch, particularly with courts in labor and
commercial matters. Based on the information available, Management and legal
advisors consider that the contingent liability that might arise from such
lawsuits would not have a material adverse effect on the financial position of
the Branch or the results of its operations.

NOTE 14 - AGREEMENTS WITH THE PROVINCES OF CHUBUT AND SANTA CRUZ

The Branch entered into with the Argentine provinces of Chubut (04/27/2007) and
Santa Cruz (06/25/2007) two investment commitments and agreements for the
extension of the term of the concession for hydrocarbon exploitation for a
ten-year period in the blocks known as Cerro Drag�n, the area of which is
extended in the territory of both provinces, and Piedra Clavada and Koluel Kaike
in the province of Santa Cruz. The agreements expired between 2016 and 2017.

These agreements provided for, among other obligations, minimum investments of
US$ 2,000,000,000 in the Province of Chubut and of US$ 500,000,000 in the
Province of Santa Cruz. These investments are to be made before 2017 and are
destined to onshore activities. Other investments of US$ 1,000,000,000 in the
Province of Chubut and of US$ 300,000,000 in the Province of Santa Cruz are to
be made before 2027.

The agreements also provided for a US$ 80,000,000 investment commitment for
offshore exploration, at the Branch's own risk, by means of two joint ventures
(UTEs) with the state run companies Petrominera (in the case of Chubut) and
Fomicruz (in the case of Santa Cruz). If the Branch makes commercial
discoveries, an additional investment commitment will be required in the amount
of US$ 500,000,000 for the development of the offshore fields to be discovered.

The creation of the UTEs referred to in the preceding paragraph is consistent
with the provisions of sections 11 and 95 of the Hydrocarbons Law, which allows
state-owned companies to enter into agreements and create companies,
partnerships or other associations with individuals or entities for the
development of their activities.

The operation agreements executed with state-owned companies also fall within
the scope of the referred Law and will be enforced as from the year 2027,
subject to compliance with the investments and Pan American Energy's exploration
success, in that it will have developed sufficient reserves to continue with the
production of the fields of those areas as from that year.

The agreement with the province of Chubut was ratified by provincial law No.
5616 passed by the Provincial Congress on May 24, 2007, enacted by decree No.
500/2007 and published in the Official Bulletin on May 28, 2007.

The Government of the Province of Santa Cruz has sent the agreement to the
Provincial Congress for its approval, which is pending.

NOTE 15 - SUBSEQUENT EVENTS

On January 28, 2008, Pan American Energy announced that, based on its permanent
exploration activities in Cerro Drag�n block, it has been able to find new oil
and natural gas reserves which were identified in the Northern and Central areas
of such block in the province of Chubut, totaling one hundred million barrels of
oil equivalent (boe).

No events or transactions have occurred from year-end to the date of issuance of
these financial statements that would have a material effect on the financial
position of the Branch or the results of its operations as of that date.

EXHIBIT A

PROPERTY, PLANT AND EQUIPMENT (in pesos)

as of December 31, 2007 and as of December 31, 2006

                                   Original values
------------------------------------------------------------------------------------
                   At
               beginning    Increases for                                   At
Main account    of year       the year       Transfers      Decreases    year-end
------------ -------------- ------------- --------------- --------------------------


Land and
 buildings       53,902,203        45,000       9,234,088           -     63,181,291
Plants,
 wells and
 exploration
 and
production
 facilities  12,045,371,439   159,021,174   1,979,510,239 151,295,611 14,032,607,241
Furniture
 and office
 supplies         8,090,645        41,348          17,396           -      8,149,389
Equipment       130,526,906             -      25,101,986           -    155,628,892
Vehicles         37,318,081             -      11,981,533   1,218,395     48,081,219
Work in
 progress       610,477,077 2,222,777,724 (2,025,845,242)   2,487,954    804,921,605
Advances to
 suppliers       24,040,065    16,130,812               -           -     40,170,877
             -------------- ------------- --------------- ----------- --------------

Total as of
 12/31/2007  12,909,726,416 2,398,016,058               - 155,001,960 15,152,740,514
             ============== ============= =============== =========== ==============

Total as of
 12/31/2006  11,215,074,160 1,714,133,505               -  19,481,249 12,909,726,416
             ============== ============= =============== =========== ==============

                               Depreciation
---------------------------------------------------------------
             Accumulated                           Accumulated       Net           Net
            at beginning                               at           as of         as of
Main account   of year       Increases Decreases    year-end      12/31/07      12/31/06
------------------------- ------------ ---------- ------------- ------------- -------------
                               (1) (2)

Land and
 buildings     25,181,488    2,974,030          -    28,155,518    35,025,773    28,720,715
Plants,
 wells and
 exploration
 and
production
 facilities 6,880,673,207  741,559,559 37,696,825 7,584,535,941 6,448,071,300 5,164,698,232
Furniture
 and office
 supplies       7,895,688       85,842          -     7,981,530       167,859       194,957
Equipment     102,450,577   19,031,463          -   121,482,040    34,146,852    28,076,329
Vehicles       23,037,300    5,472,797  1,176,025    27,334,072    20,747,147    14,280,781
Work in
 progress               -            -          -             -   804,921,605   610,477,077
Advances to
 suppliers              -            -          -             -    40,170,877    24,040,065
            ------------- ------------ ---------- ------------- ------------- -------------

Total as of
 12/31/2007 7,039,238,260  769,123,691 38,872,850 7,769,489,101 7,383,251,413
            ============= ============ ========== ============= =============

Total as of
 12/31/2006 6,417,279,987  638,177,818 16,219,545 7,039,238,260               5,870,488,156
            ============= ============ ========== =============               =============

(1) See Exhibit G.

(2) See depreciation policies in Note 3.2.e.

EXHIBIT B

INTANGIBLE ASSETS (in pesos)

as of December 31, 2007 and as of December 31, 2006

                           Original Values                              Amortization
             ------------------------------------------- -------------------------------------------
                                                         Accumulated           Decreases
                 At      Increases Decreases                 at                   for    Accumulated   Net       Net
  Main        beginning     for       for        At       beginning   For the  the year      at       as of     as of
   account     of year   the year  the year   year end     of year     year               year-end   12/31/07 12/31/06
------------ ----------- --------- --------- ----------- ----------- --------- --------- ----------- -------- ---------
                                                                       (1) (2)
Pre-
 operating
 expenses     48,740,915         -         -  48,740,915  48,300,969    52,105         -  48,353,074  387,841   439,946
Acquisition
 cost of
 blocks        6,487,247         -         -   6,487,247   6,276,829   207,790         -   6,484,619    2,628   210,418
Deferred
 charges      63,488,027         -         -  63,488,027  62,219,624 1,268,403         -  63,488,027        - 1,268,403
             ----------- --------- --------- ----------- ----------- --------- --------- ----------- -------- ---------

Total as of
 12/31/2007  118,716,189         -         - 118,716,189 116,797,422 1,528,298         - 118,325,720  390,469
             =========== ========= ========= =========== =========== ========= ========= =========== ======== =========

Total as of
 12/31/2006  118,299,083   417,106         - 118,716,189 114,582,363 2,215,059         - 116,797,422          1,918,767
             =========== ========= ========= =========== =========== ========= ========= =========== ======== =========

(1) See Exhibit G.

(2) See depreciation policies in Note 3.2.f.

EXHIBIT C

OTHER INVESTMENTS (in pesos)

as of December 31, 2007 and as of December 31, 2006



                                                              Book value       Book value
                      Main account                            12/31/2007       12/31/2006
-------------------------------------------------------- -------------------- ------------
Short-term investments
Mutual funds in foreign currency (Exhibit F)                            1,138  215,056,665
   Class: Citi Institutional Liquid Reserves
   Quantity: 366 units
   Quoted value: US$ 1
   (US dollar)
Government securities
   "Certificados de cancelaci�n de deuda impositiva"
   (Government of the Province of Chubut)
   Coupons Nos. 14, 18 and 19                                       1,500,411            -
Time deposits in foreign currency (Exhibit F)                     218,595,022            -
Special deposit account in foreign currency (Exhibit F)           230,996,906            -
                                                         -------------------- ------------
       Total short-term investments                               451,093,477  215,056,665
                                                         -------------------- ------------
Long-term investments
Government securities:
   Bonos de la Rep�blica Argentina - Discount bonds
   in pesos 5.83% final maturity in 2033
   Quantity: 4,821,350
   Face value: $ 1
   Quoted value: $ 1,16                                             5,592,766    7,015,064
   GDP coupon in pesos
   Quantity: 14,306,676
   Face value: $ 1
   Quoted value: $ 0,088                                            1,258,987    1,702,494
   "Certificados de cancelaci�n de deuda impositiva"
   (Government of the Province of Chubut)
   Coupons Nos. 20 to 23                                            2,680,093            -
Shares:
   Garantizar S.A.
   Quantity: 2000
   Class: B
   Face value: $ 1                                                      2,000        2,000
                                                         -------------------- ------------
       Total long-term investments                                  9,533,846    8,719,558
                                                         -------------------- ------------
       Total investments                                          460,627,323  223,776,223
                                                         -------------------- ------------

EXHIBIT D

ALLOWANCES, PROVISIONS AND ACCRUALS (in pesos)

as of December 31, 2007 and as of December 31, 2006

                                       Balances at                        Decreases        Balances as
                                       beginning of    Increases for        for the              of
           Main account                    year          the year             year           12/31/07
-----------------------------------  ----------------  -------------      -----------      -------------

Deducted from current assets:

Allowance for bad debtors in local
currency                                    4,983,016      5,903,164  (1)     688,994  (2)    10,197,186
Allowance for bad debtors in
 foreign
currency                                   14,029,859        219,594  (3)  14,249,453  (4)             -
Allowance for obsolescence of
materials                                   2,864,130        445,288  (5)           -          3,309,418
                                     ----------------  -------------      -----------      -------------

Total deducted from assets                 21,877,005      6,568,046       14,938,447         13,506,604
                                     ================  =============      ===========      =============

Included in current liabilities:

Provision for future compensation
to personnel                                1,968,408        493,335  (6)           -          2,461,743
                                     ----------------  -------------      -----------      -------------

Subtotal current liabilities                1,968,408        493,335                -          2,461,743
                                     ----------------  -------------      -----------      -------------

Included in non current
 liabilities:

Accrual for lawsuits                       19,903,786        746,126  (7)     432,414  (8)    20,217,498
Provision for environmental
remediation                               122,553,250     14,867,109  (9)  55,237,895 (10)    82,182,464
Provision for future compensation
to personnel                                9,797,018      8,281,606 (11)   2,837,198 (12)    15,241,426
                                     ----------------  -------------      -----------      -------------

Subtotal non current liabilities          152,254,054     23,894,841       58,507,507        117,641,388
                                     ----------------  -------------      -----------      -------------

Total included in liabilities             154,222,462     24,388,176       58,507,507        120,103,131
                                     ================  =============      ===========      =============

(1) Charges for the fiscal year included in Administrative Expenses of the
Statement of Income (See Exhibit G).

(2) Uses for the fiscal year.

(3) Charges for the fiscal year included in financial results provided by
assets, exchange gains/losses of the Statement of Income.

(4) Recoveries for the fiscal year.

(5) Charges for the fiscal year. They are included in production costs (see
Exhibit G) of the Statement of Income.

(6) Transfer from the non current provision for future compensation to
personnel.

(7) Charges for the fiscal year included in Administrative Expenses of the
Statement of Income (See Exhibit G).

(8) It is made up of $ 377,888 corresponding to payments for the fiscal year and
$ 54,526 corresponding to recoveries for the fiscal year.

(9) Charges for the fiscal year. It is made up of $ 6,655,077 included in
financial results provided by liabilities, $ 6,803,312 included in plants, wells
and exploration and production facilities and $ 1,408,720 included in other
income and expenses of the Statement of Income.

(10) Decreases in the amounts capitalized included (in plants, wells and
exploration and production facilities) amounting to $ 53,808,467 and uses for
the fiscal year of $ 1,429,428.

(11) Charges for the fiscal year. They are included in other financial results
of the Statement of Income and in Exhibit G.

(12) It is made up of the compensation paid during the fiscal year amounting to
$ 2,343,863 and the transfer referred to in line 6 of $493,335.

EXHIBIT E

COST OF SALES (in pesos)

For the fiscal year beginning January 1, 2007 and ended December 31, 2007,
comparative with the prior fiscal year

                                                                       2007               2006
                                                        ------------------- ------------------


Inventories at the beginning of the year                        117,701,356        107,032,601

Purchases                                                       210,238,684        231,050,230

Production costs (Exhibit G)                                  2,535,313,046      2,159,201,877

Inventories at fiscal year-end                               ( 172,961,162)     ( 117,701,356)
                                                        ------------------- ------------------

Cost of sales                                                 2,690,291,924      2,379,583,352
                                                        =================== ==================

EXHIBIT F

ASSETS AND LIABILITIES IN FOREIGN CURRENCY

as of December 31, 2007 and as of December 31, 2006


                         Amount and type                          Amount     Amount and type                 Amount in
                                 of        Exchange              in local       of foreign                     local
                         foreign currency                       currency as      currency                  currency as
                                                                     of                                          of
          Item                   as of       rate                                   as of
                               12/31/2007                        12/31/2007        12/31/2006                 12/31/2006
------------------------ ----------------- --------             ----------- ------------------             -------------
                             US$     Euros        $         (1)         (1)     US$      Euros         (2)           (2)
ASSETS

CURRENT ASSETS

Cash on hand and in
 banks
   Cash on hand                    - 4,370   4.5724      19,981                        - 4,370      17,419
                              53,298     -    3.109     165,702     185,683       71,245           215,303       232,722
                                                    -----------                                -----------
   Cash in banks
     Domestic                 25,275     -    3.109      78,581                    3,472            10,491
     Foreign                  32,246     -    3.109     100,253     178,834    3,138,368         9,484,147     9,494,638
                                                    -----------                                -----------

Investments
   Time deposits in
    foreign currency      70,310,396     -    3.109             218,595,022            -                               -
   Mutual funds in
    foering currency             366     -    3.109                   1,138   71,163,688                     215,056,665
   Special deposit
    account in foreign
    currency              74,299,423     -    3.109             230,996,906            -                               -

Accounts receivable
   Domestic              116,860,806     -    3.109 363,320,247              106,460,311       321,723,060
   Foreign                 7,697,427     -    3.109  23,931,302 387,251,549  119,506,796       361,149,538   682,872,598
                                                    -----------                                -----------
   Allowances for bad
    debtors                        -     -        -                       - ( 4,642,574)                   ( 14,029,859)

Other receivables
   Expenses recoverable
    - foreign                618,626     -    3.109               1,923,308      425,037                       1,284,463
   Miscellaneous -
    domestic                 435,222     -    3.109   1,353,106                2,675,304         8,084,768
   Miscellaneous -
    foreign                2,612,750     -    3.109   8,123,039   9,476,145    6,600,871        19,947,831    28,032,599
                                                    -----------                                -----------
   Foreign affiliated
    companies                735,516     -    3.109               2,286,719      132,125                         399,282

Inventories
   Advances to suppliers
    - foreign                184,212     -    3.109                 572,715       93,245     -                   281,786

   Total current assets  273,865,563 4,370                      851,468,019  305,627,888 4,370               923,624,894
                         ----------- -----                      ----------- ------------ -----             -------------

NON CURRENT ASSETS

Other receivables
   Miscellaneous -
    domestic               4,601,062     -    3.109              14,304,701    4,641,053     -                14,025,263
                         ----------- -----                      ----------- ------------ -----             -------------

   Total non current
    assets                 4,601,062     -                       14,304,701    4,641,053     -                14,025,263
                         ----------- -----                      ----------- ------------ -----             -------------

   Total assets          278,466,625 4,370                      865,772,720  310,268,941 4,370               937,650,157
                         =========== =====                      =========== ============ =====             =============

US$ = United States dollars

(1) As per buyer exchange rate as of December 31, 2007.

(2) As per buyer exchange rate as of December 31, 2006.

EXHIBIT F

(Cont.)

ASSETS AND LIABILITIES IN FOREIGN CURRENCY

as of December 31, 2007 and as of December 31, 2006


                           Amount and type                            Amount      Amount and                 Amount in
                                  of        Exchange                 in local         type                     local
                           foreign currency                        currency as    of foreign               currency as
                                                                         of        currency                      of
           Item                   as of       rate                                   as of
                                 12/31/2007                           12/31/2007    12/31/2006                12/31/2006
-------------------------- ---------------- -------- ------------- ------------- ------------- ----------- -------------
                                 US$               $           (1)           (1)      US$              (2)           (2)
LIABILITIES

CURRENT LIABILITIES

Accounts payable
   Trade - domestic              48,454,730    3.149   152,583,946                  37,552,721 114,986,434
   Trade - foreign                2,260,353    3.149     7,117,852   159,701,798    17,072,909  52,277,247   167,263,681
                                                     -------------                             -----------
   Affiliated companies -
    domestic                      1,039,475    3.149     3,273,306                   2,965,550   9,080,512
   Affiliated companies -
    foreign                         606,618    3.149     1,910,240     5,183,546       292,913     896,899     9,977,411
                                                     -------------                             -----------

Loans
   Bonds - Foreign                        -        -             -             -   100,000,000               306,200,000
   Secured notes payable -
    Foreign                               -        -             -             -     1,362,702                 4,172,593
   Unsecured notes payable
    - domestic                   82,000,000    3.149   258,218,000                  25,000,000  76,550,000             -
   Unsecured notes payable
    - Foreign                    46,818,827    3.149   147,432,487   405,650,487    48,842,446 149,555,569   226,105,569
   Interest accrued on
   bonds and notes payable       24,081,660    3.149                  75,833,146    21,386,973                65,486,912
                           ----------------                        ------------- -------------             -------------

   Total current
    liabilities                 205,261,663                          646,368,977   254,476,214               779,206,166
                           ----------------                        ------------- -------------             -------------

NON CURRENT LIABILITIES

Accounts payable
   Miscellaneous
    liabilities - foreign         5,510,148    3.149                  17,351,455     5,510,148                16,872,072

Loans
   Bonds - foreign              350,000,000    3.149               1,102,150,000   350,000,000             1,071,700,000
   Unsecured notes payable
    - domestic                   15,000,000    3.149    47,235,000             -             -           -
   Unsecured notes payable
    - foreign                   582,780,000    3.149 1,835,174,219 1,882,409,219   244,034,550 747,233,793   747,233,793
                           ----------------          ------------- ------------- ------------- ----------- -------------

   Total non current
    liabilities                 953,290,148                        3,001,910,674   599,544,698             1,835,805,865
                           ----------------                        ------------- -------------             -------------

   Total liabilities          1,158,551,811                        3,648,279,651   854,020,912             2,615,012,031
                           ================                        ============= =============             =============

US$ = United States dollars

(1) As per seller exchange rate as of December 31, 2007.

(2) As per seller exchange rate as of December 31, 2006.

EXHIBIT G

INFORMATION REQUIRED BY ART. 64, CLAUSE 1b) OF LAW 19550, for the fiscal year
beginning January 1, 2007 and ended December 31, 2007, comparative with the
prior fiscal year (in pesos)

                                           Production    Administrative
  Items                                       costs          expenses        Total 2007     Total 2006
----------------------------------------  ------------- ----------------- --------------- --------------

Fees and compensation for services           22,231,589        20,389,108      42,620,697     29,213,286
Salaries, wages and benefits to
personnel                                   159,786,066        47,148,062     206,934,128    137,849,967
Defined benefit plans to personnel
(Note 3.2.j)                                 12,701,813         9,815,236      22,517,049     21,150,418
Social security contributions                17,086,164         8,217,102      25,303,266     19,374,470
Taxes, assessments and other
 contributions                              839,386,187       129,934,957     969,321,144    864,819,051
Depreciation of property, plant and
 equipment (Exhibit A)                      761,688,344         7,435,347     769,123,691    638,177,818
Intangible asset amortization (Exhibit
 B)                                           1,528,298                 -       1,528,298      2,215,059
Transportation, freight and storage
 expenses                                   109,165,788            62,785     109,228,573     90,817,237
Contracted services                         386,550,013        16,071,961     402,621,974    407,390,908
Travel and accommodation expenses             8,871,492         7,234,017      16,105,509     12,548,784
Building rentals and maintenance             22,163,264        12,857,005      35,020,269     33,367,588
Environmental remediation and rights of
 way                                         41,795,578                 -      41,795,578     21,391,465
Bad debtors (Exhibit D)                               -         5,903,164       5,903,164      3,550,367
Lawsuits                                        414,439       746,126 (1)       1,160,565      3,913,284
Obsolescence of materials (Exhibit D)           445,288                 -         445,288        502,300
Production, exploration and
 administrative general expenses            151,498,723           279,526     151,778,249     99,349,329
                                          ------------- ----------------- --------------- --------------

Total 2007                                2,535,313,046       266,094,396   2,801,407,442
                                          ============= ================= ===============

Total 2006                                2,159,201,877       226,429,454                  2,385,631,331
                                          ============= =================                 ==============

(1) Exhibit D

EXHIBIT H

Balance sheet as of December 31, 2007 and as of December 31, 2006

TERMS, INTEREST RATES AND ADJUSTMENT CLAUSES OF SHORT-TERM INVESTMENTS, LOANS,
RECEIVABLES AND PAYABLES (in pesos)

                                Investments                    Receivables                     Payables
             ------------------------------ ------------------------------ ----------------------------
                12/31/2007       12/31/2006      12/31/2007     12/31/2006    12/31/2007     12/31/2006
             ------------- ---------------- --------------- -------------- ------------- --------------

Total
 amount
 without
 an
 established
 term        1,260,987 (1)        1,704,494 101,806,117 (3)     61,217,175   664,952,181    703,702,130

To become
 due:

Up to 3
 months        450,344,176      215,056,665     515,078,238    821,770,799   754,732,049    746,810,041
From 3 to 6
 months                  -                -       1,718,540      1,780,744   174,757,551    391,765,651
From 6 to 9
 months            670,023                -       1,674,756      1,087,619       615,436        492,102
From 9 to 12
 months             79,278                -       1,610,016        697,929    30,986,936     22,356,302
From 1 to 2
 years           1,340,047                -       5,651,924      2,814,716       229,339        215,609
From 2 to 3
 years           1,340,046                -       3,793,343        903,215             -              -
From 3 to 4
 years                   -                -       1,574,957        491,328             -              -
From 4 to 5
 years                   -                -         848,516        332,877             -              -
From 5 to 6
 years                   -                -         382,649         59,678             -              -
From 6 to 7
 years                   -                -               -              -             -              -
From 7 to 8
 years                   -                -               -              -             -              -
From 8 to 9
 years                   -                -               -              -             -              -
From 9 to 10
 years                   -                -               -              -             -              -
From 10 to
 11 years                -                -               -              -             -              -
Over 11
 years       5,592,766 (2)    7,015,064 (2)               -              -             -              -
             ------------- ---------------- --------------- -------------- ------------- --------------

Subtotal       460,627,323      223,776,223     634,139,056    891,156,080 1,626,273,492  1,865,341,835

Other items
 that are
 not to be
 collected
 or paid in
 cash                    -                -      15,541,887     12,183,347             -              -
             ------------- ---------------- --------------- -------------- ------------- --------------

Total          460,627,323      223,776,223     649,680,943    903,339,427 1,626,273,492  1,865,341,835
             ============= ================ =============== ============== ============= ==============

                                                                          Loans
                                                         ----------------------------------------
                                                                     12/31/2007        12/31/2006
                                                         ---------------------- -----------------

Total amount without an established term                                      -                 -

To become due:

Up to 3 months                                                      566,991,809       793,674,710
From 3 to 6 months                                                  123,035,173        12,719,548
From 6 to 9 months                                                   55,280,695        59,108,848
From 9 to 12 months                                                           -        11,519,244
From 1 to 2 years                                                   655,218,728       614,032,179
From 2 to 3 years                                                   293,083,728       420,959,321
From 3 to 4 years                                                   686,708,728       111,306,762
From 4 to 5 years                                                   686,708,728       485,663,820
From 5 to 6 years                                                   222,237,526       485,663,820
From 6 to 7 years                                                   189,236,006        34,018,820
From 7 to 8 years                                                   113,722,986        34,018,820
From 8 to 9 years                                                    83,398,116        34,049,440
From 9 to 10 years                                                   36,163,116        45,930,000
From 10 to 11 years                                                  18,081,557                 -
Over 11 years                                                                 -                 -
                                                         ---------------------- -----------------

Subtotal                                                          3,729,866,896     3,142,665,332

Other items that are not to be collected or paid in cash                      -                 -
                                                         ---------------------- -----------------

Total                                                             3,729,866,896     3,142,665,332
                                                         ====================== =================

(1) It includes $ 1,258,987 relating to GDP coupons in pesos. The government
securities linked to the GDP become due on 12/31/2035. However, in the event a
certain GDP rate growth is exceeded in the country, the bondholders shall be
entitled to annual payments.

(2) It is amortized as from 06/30/2024 in 20 semiannual installments (on 06/30
and 12/31 of each year), the final maturity of which is on 12/31/2033.

(3) It includes the overdue receivables detailed in item 3.a of the
supplementary information.

EXHIBIT H

Balance sheet as of December 31, 2007 and as of December 31, 2006 (Cont.)

TERMS, INTEREST RATES AND ADJUSTMENT CLAUSES OF SHORT-TERM INVESTMENTS, LOANS,
RECEIVABLES AND PAYABLES (in pesos)

                              Investments                       Receivables                           Payables
          --------------------------------- --------------------------------- -------------------------------------
                12/31/2007       12/31/2006       12/31/2007       12/31/2006         12/31/2007         12/31/2006
          ---------------- ---------------- ---------------- ---------------- ------------------ ------------------
          Rate      Pesos  Rate      Pesos  Rate      Pesos  Rate      Pesos  Rate       Pesos   Rate       Pesos
          ---- ----------- ---- ----------- ---- ----------- ---- ----------- ---- ------------- ---- -------------

Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           - 8.00   2,362,909    -             -    -             -
CER plus
 annual
 fixed
 rate in
 $        4.00   4,180,504    -           -    -           -    -           -    -             -    -             -
Average
 annual
 variable
 rate in
 $           -           -    -           - 8.00  15,196,646 8.00   7,906,016    -             -    -             -
Average
 annual
 variable
 rate in
 $           -           -    -           -    -           -    -           -    -             -                  -
Annual
 fixed
 rate in
 US$         -           -    -           - 8.50   1,654,064 8.50   1,079,127    -             -    -             -
Average
 annual
 variable
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Average
 annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -    -             -    -             -
Average
 annual
 variable
 rate in
 US$      4.62 449,593,066 5.26 215,056,665 4.50      14,286 4.50      28,574    -             -    -             -
Annual
 fixed
 rate in
 $ plus
 CER      5.83   5,592,766 5.83   7,015,064    -           -    -           -    -             -    -             -
Non-
 interest
 bearing         1,260,987        1,704,494      632,815,947      891,962,801      1,626,273,492      1,865,341,835
               -----------      -----------      -----------      -----------      -------------      -------------

Total          460,627,323      223,776,223      649,680,943      903,339,427      1,626,273,492      1,865,341,835
               ===========      ===========      ===========      ===========      =============      =============

                                                                                            Loans
                                                                      --------------------------------------------------
                                                                                      12/31/2007              12/31/2006
                                                                      -------------------------- -----------------------
                                                                        Rate            Pesos    Rate            Pesos
                                                                      -------- ----------------- ----- -----------------

Annual fixed rate in US$                                                     -                 -  6.75       306,200,000
Annual fixed rate in US$                                                 7.125       314,900,000 7.125       306,200,000
Annual fixed rate in US$                                                     -                 -  7.00         4,172,594
Annual fixed rate in US$                                                  5.45         1,887,731  5.45         5,565,507
Annual fixed rate in US$                                                  6.18            64,199  6.18           187,272
Annual fixed rate in US$                                                  7.56       279,914,610  7.56       306,200,000
Annual fixed rate in US$                                                  6.97       354,262,500  6.97       413,370,000
Annual fixed rate in US$                                              5.66 (2)        47,235,000  5.66        45,930,000
Annual fixed rate in US$                                                  8.00        31,490,000  8.00        30,620,000
Annual fixed rate in US$                                                  7.75       787,250,000  7.75       765,500,000
CER plus annual fixed rate in $                                              -                 -     -                 -
Average annual variable rate in $                                         9.83       263,824,044  7.78       275,057,276
Average annual variable rate in $                                            -                 - 10.25       446,709,189
Annual fixed rate in US$                                                     -                 -     -                 -
Average annual variable rate in US$                                       7.14     1,267,752,666  6.48        94,916,582
Average annual fixed rate in US$                                          5.76       305,453,000  5.00        76,550,000
Average annual variable rate in US$                                          -                 -     -                 -
Annual fixed rate in $ plus CER                                              -                 -     -                 -
Non-interest bearing                                                                           -     -                 -
                                                                               -----------------       -----------------

Total                                                                          3,654,033,750 (1)       3,077,178,420 (1)
                                                                               =================       =================

(1) It only includes principal at face value.

(2) Plus additional interest calculated in relation to the economic performance
of Pan American Energy LLC.

EXHIBIT I

Balance sheet as of December 31, 2007 and as of December 31, 2006

PARTICIPATION IN JOINT VENTURES (in pesos)


               Lindero     Lindero     Aguada      Aguada        San         San                              Estancia
                                                                                                                La
             Atravesado  Atravesado    Pichana     Pichana      Roque       Roque     Acambuco    Acambuco    Escondida
                  62,50%      62,50%      18,18%      18,18%     16,47 %     16,47 %     52,00 %     52,00 %     25,00%
              12/31/2007  12/31/2006  12/31/2007  12/31/2006  12/31/2007  12/31/2006  12/31/2007  12/31/2006 12/31/2007
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

ASSETS
------------
CURRENT
 ASSETS
------------
Cash on hand
 and in
 banks             6,737       8,006     162,872     132,325      21,005      46,796     115,536     681,589     28,033
Other
 receivables   1,022,484     885,345   9,917,410   1,608,315   5,035,286      27,819     611,434   2,503,876  1,171,815
Inventories    6,518,514   5,608,560   9,565,286  10,779,553   9,049,887   8,325,385   2,697,006   1,881,612     80,115
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total
 current
 assets        7,547,735   6,501,911  19,645,568  12,520,193  14,106,178   8,400,000   3,423,976   5,067,077  1,279,963
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

NON CURRENT
 ASSETS
------------
Property,
 plant and
 equipment   132,339,618 100,752,309 253,948,755 210,261,214 189,303,216 211,498,427 673,640,204 599,158,484  5,587,925
Intangible
 assets                -           -           -       8,059           -           -           -           -      2,628
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total non
 current
 assets      132,339,618 100,752,309 253,948,755 210,269,273 189,303,216 211,498,427 673,640,204 599,158,484  5,590,553
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total assets 139,887,353 107,254,220 273,594,323 222,789,466 203,409,394 219,898,427 677,064,180 604,225,561  6,870,516
             =========== =========== =========== =========== =========== =========== =========== =========== ==========

                                               Costa      Costa      Costa      Costa
                                               Afuera     Afuera     Afuera     Afuera
             Estancia                        Argentina  Argentina  Argentina  Argentina  Anticlinal Anticlinal
               La
             Escondida Bandurria  Bandurria  Bloque 40  Bloque 40  Bloque 46  Bloque 46    Funes      Funes
                25,00%     18,18%     18,18%     50,00%     50,00%     50,00%     50,00%     80,00%     80,00%
            12/31/2006 12/31/2007 12/31/2006 12/31/2007 12/31/2006 12/31/2007 12/31/2006 12/31/2007 12/31/2006
            ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

ASSETS
------------
CURRENT
 ASSETS
------------
Cash on hand
 and in
 banks           1,384     68,531     88,614          -          -          -          -          -      1,644
Other
 receivables   395,342      8,948     31,301     63,424     65,562     29,265     29,264    911,323  1,087,844
Inventories     76,352          -          -          -          -          -          -          -          -
            ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total
 current
 assets        473,078     77,479    119,915     63,424     65,562     29,265     29,264    911,323  1,089,488
            ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

NON CURRENT
 ASSETS
------------
Property,
 plant and
 equipment   5,090,205  2,117,425  4,519,810 13,835,541 11,175,237  1,113,741    588,337  3,820,656  2,262,167
Intangible
 assets        210,418          -          -          -          -          -          -          -          -
            ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total non
 current
 assets      5,300,623  2,117,425  4,519,810 13,835,541 11,175,237  1,113,741    588,337  3,820,656  2,262,167
            ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total assets 5,773,701  2,194,904  4,639,725 13,898,965 11,240,799  1,143,006    617,601  4,731,979  3,351,655
            ========== ========== ========== ========== ========== ========== ========== ========== ==========

EXHIBIT I

(Cont.)

Balance sheet as of December 31, 2007 and as of December 31, 2006

PARTICIPATION IN JOINT VENTURES (in pesos)


                    Lindero     Lindero     Aguada      Aguada        San         San
                  Atravesado  Atravesado    Pichana     Pichana      Roque       Roque     Acambuco    Acambuco
                       62,50%      62,50%      18,18%      18,18%      16,47%      16,47%      52,00%      52,00%
                   12/31/2007  12/31/2006  12/31/2007  12/31/2006  12/31/2007  12/31/2006  12/31/2007  12/31/2006
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

LIABILITIES
---------------
CURRENT
 LIABILITIES
---------------
Accounts payable    3,747,969   3,103,235  44,692,923  39,892,511  14,300,600  14,087,777  31,815,503  71,445,119
Payroll and
 social security
 contributions        754,526     500,717           -           -           -           -     659,944     574,386
Taxes payable         123,464      85,849         215           -           -     307,032     275,367     899,221
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

Total current
 liabilities        4,625,959   3,689,801  44,693,138  39,892,511  14,300,600  14,394,809  32,750,814  72,918,726
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

NON CURRENT
 LIABILITIES
-----------------
Accounts payable    3,261,912   2,036,355     219,132     219,132     876,528     876,528   1,741,273   1,521,884
Provision for
 environmental
 remediation       10,608,086   9,177,151   6,401,074   3,737,323   8,873,866   7,186,139   3,459,737   2,928,406
Accruals            6,147,461   5,137,832      76,201     365,027     436,293     325,076   2,458,378   2,098,309
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

Total non current
 liabilities       20,017,459  16,351,338   6,696,407   4,321,482  10,186,687   8,387,743   7,659,388   6,548,599
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

Total liabilities  24,643,418  20,041,139  51,389,545  44,213,993  24,487,287  22,782,552  40,410,202  79,467,325
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

Owner's equity    115,243,935  87,213,081 222,204,778 178,575,473 178,922,107 197,115,875 636,653,978 524,758,236
                  ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------

Total             139,887,353 107,254,220 273,594,323 222,789,466 203,409,394 219,898,427 677,064,180 604,225,561
                  =========== =========== =========== =========== =========== =========== =========== ===========

                                                               Costa      Costa      Costa      Costa
                                                               Afuera     Afuera     Afuera     Afuera
                  Estancia   Estancia                        Argentina  Argentina  Argentina  Argentina  Anticlinal
                    La         La
                  Escondida  Escondida Bandurria  Bandurria  Bloque 40  Bloque 40  Bloque 46  Bloque 46    Funes
                     25,00%     25,00%     18,18%     18,18%     50,00%     50,00%     50,00%     50,00%     80,00%
                 12/31/2007 12/31/2006 12/31/2007 12/31/2006 12/31/2007 12/31/2006 12/31/2007 12/31/2006 12/31/2007
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

LIABILITIES
---------------
CURRENT
 LIABILITIES
---------------
Accounts payable  1,201,226    250,581    509,626    823,060          -          -          -     13,283  1,078,756
Payroll and
 social security
 contributions            -          -          -          -          -          -          -          -      6,711
Taxes payable       111,921     95,443      6,793          -          -          -          -          -      2,654
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total current
 liabilities      1,313,147    346,024    516,419    823,060          -          -          -     13,283  1,088,121
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

NON CURRENT
 LIABILITIES
-----------------
Accounts payable          -          -                     -                     -                     -          -
Provision for
 environmental
 remediation         83,641     92,200          -          -          -          -          -               551,850
Accruals                  -          -          -          -          -          -          -          -          -
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total non current
 liabilities         83,641     92,200          -          -          -          -          -          -    551,850
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total liabilities 1,396,788    438,224    516,419    823,060          -          -          -     13,283  1,639,971
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Owner's equity    5,473,728  5,335,477  1,678,485  3,816,665 13,898,965 11,240,799  1,143,006    604,318  3,092,008
                 ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total             6,870,516  5,773,701  2,194,904  4,639,725 13,898,965 11,240,799  1,143,006    617,601  4,731,979
                 ========== ========== ========== ========== ========== ========== ========== ========== ==========


                 Anticlinal
                   Funes
                     80,00%
                 12/31/2006
                 ----------

LIABILITIES
---------------
CURRENT
 LIABILITIES
---------------
Accounts payable  1,376,434
Payroll and
 social security
 contributions        1,928
Taxes payable        10,000
                 ----------

Total current
 liabilities      1,388,362
                 ----------

NON CURRENT
 LIABILITIES
-----------------
Accounts payable          -
Provision for
 environmental
 remediation        972,617
Accruals                  -
                 ----------

Total non current
 liabilities        972,617
                 ----------

Total liabilities 2,360,979
                 ----------

Owner's equity      990,676
                 ----------

Total             3,351,655
                 ==========

EXHIBIT I

(Cont.)

Statement of income for the fiscal year ended December 31, 2007, comparative
with the prior fiscal year

PARTICIPATION IN JOINT VENTURES (in pesos)


                 Lindero      Lindero       Aguada        Aguada         San          San
                Atravesado   Atravesado     Pichana      Pichana        Roque        Roque       Acambuco
                     62,50%       62,50%        18,18%       18,18%        16,47%       16,47%        52,00%
                       2007         2006          2007         2006          2007         2006          2007
               ------------ ------------ ------------- ------------ ------------- ------------ -------------


Sales (1)                 -            -             -            -             -            -             -
Cost of sales  (55,567,051) (48,257,651) (125,013,861) (85,070,429) (115,433,002) (47,786,864) (172,199,123)
               ------------ ------------ ------------- ------------ ------------- ------------ -------------

Gross result   (55,567,051) (48,257,651) (125,013,861) (85,070,429) (115,433,002) (47,786,864) (172,199,123)
Administrative
 expenses                 -            -             -            -             -            -             -
               ------------ ------------ ------------- ------------ ------------- ------------ -------------
Operating
 result        (55,567,051) (48,257,651) (125,013,861) (85,070,429) (115,433,002) (47,786,864) (172,199,123)

Financial
 results - net   ( 607,411)   ( 484,699)    ( 214,864)   ( 148,551)    ( 413,880)   ( 340,800)        37,110
Other income
 and expenses
 -
Net                 702,842 ( 2,801,292)     4,874,844    ( 50,634)       371,953   ( 435,176)       972,859
               ------------ ------------ ------------- ------------ ------------- ------------ -------------

Net results    (55,471,620) (51,543,642) (120,353,881) (85,269,614) (115,474,929) (48,562,840) (171,189,154)
               ============ ============ ============= ============ ============= ============ =============


                                          Estancia    Estancia
                                             La          La
                             Acambuco     Escondida   Escondida   Bandurria  Bandurria
                                  52,00%      25,00%      25,00%      18,18%   18,18%%
                                    2006        2007        2006        2007      2006
              -------------------------- ----------- ----------- ----------- ---------


Sales (1)                              -           -           -           -         -
Cost of sales              (148,797,239) (3,369,612) (4,849,585)           -         -
              -------------------------- ----------- ----------- ----------- ---------

Gross result               (148,797,239) (3,369,612) (4,849,585)           -         -
Administrative
 expenses                              -           -           -           -         -
              -------------------------- ----------- ----------- ----------- ---------
Operating
 result                    (148,797,239) (3,369,612) (4,849,585)           -

Financial
 results - net                ( 246,753)      19,189   ( 17,359)    ( 2,315)  ( 1,994)
Other income
 and expenses
 -
Net                           ( 534,930)           -           - (3,054,904) (768,580)
              -------------------------- ----------- ----------- ----------- ---------

Net results                (149,578,922) (3,350,423) (4,866,944) (3,057,219) (770,574)
              ========================== =========== =========== =========== =========

                             Costa      Costa      Costa      Costa
                              Afuera     Afuera     Afuera     Afuera
                            Argentina  Argentina  Argentina  Argentina  Anticlinal   Anticlinal
                            Bloque 40  Bloque 46  Bloque 46  Bloque 46     Funes       Funes
                               50,00%      35,00%    50,00%      35,00%      80,00%       80,00%
                                 2007        2006      2007        2006        2007         2006
                            --------- ----------- --------- ----------- ----------- ------------


Sales (1)                           -           -         -           -           -            -
Cost of sales                       -           -         -           - (8,619,219) (14,246,684)
                            --------- ----------- --------- ----------- ----------- ------------

Gross result                                                            (8,619,219) (14,246,684)
Administrative
 expenses                           -           -         -           -           -            -
                            --------- ----------- --------- ----------- ----------- ------------
Operating
 result                             -           -                     - (8,619,219) (14,246,684)

Financial
 results - net                      -           -         -           -     142,344    ( 52,968)
Other income
 and expenses
 -
Net                         (567,667) (4,327,370) (732,684) (3,563,307)           6       ( 101)
                            --------- ----------- --------- ----------- ----------- ------------

Net results                 (567,667) (4,327,370) (732,684) (3,563,307) (8,476,869) (14,299,753)
                            ========= =========== ========= =========== =========== ============

(1) No sales were recorded in the joint ventures because production is directly
assigned to each participant.

FINANCIAL STATEMENTS as of December 31, 2007

REPORTING SUMMARY REQUIRED BY RESOLUTION No. 290/97 OF THE NATIONAL SECURITIES
COMMISSION

1. Comment on the Branch's activity

1.1. Operating activities

Pan American Energy LLC (Argentine Branch) is mainly engaged in the exploration,
development and production of hydrocarbons. The Head Office of the Branch is Pan
American Energy LLC, which also has various subsidiaries and affiliates that
carry out activities in Argentina and other Mercosur countries. BP and Bridas
Corporation hold interests that account for 60% and 40%, respectively of the
Branch's ownership.

During fiscal year 2007, with a daily average production of 219.6 thousand
barrels of oil, the Branch together with subsidiaries of Head Office that
develop their activities in the country rank second in the production of natural
gas and oil in Argentina.

1.2. Issuance of bonds

On February 11, 1997, Amoco Argentina Oil Company (Argentine Branch) issued the
Second Series of bonds in the amount of US$ 100,000,000 due in ten years, at an
annual 6.75% rate. The bonds were paid upon maturity on February 1, 2007. Such
issuance was made under the short and medium term bond program for a total
maximum amount of US$ 200,000,000 authorized by the CNV through Resolution No.
10982 on July 13, 1995.

As a result of the transfer of assets and liabilities referred to in the second
paragraph of Note 1 to these financial statements, Amoco Argentina Oil Company
(Argentine Branch) transferred the above mentioned bonds to Pan American Energy
LLC (Argentine Branch). Such bonds were guaranteed by BP Company North America
Inc. until repayment in February 2007.

On February 21, 2002, through Resolution No. 14123, the CNV authorized the
Global Program for the Issuance of Bonds of Pan American Energy LLC (Argentine
Branch) (the "Global Program") in the total amount of US$ 1,000,000,000.

On October 27, 2004, the Branch issued the Bonds Class 3 in the amount of
US$ 100,000,000 under the Global Program. The bonds become due in five years
(October 27, 2009) with a 7.125% annual fixed interest rate to be paid on a
half-yearly basis. The price of the issuance was 99.483% of the nominal value.
The funds obtained from this issuance were allocated to investments in property,
plant and equipment and repayment of loans.

On August 9, 2006, the Branch issued the Bonds Class 4 in the amount of
US$ 250,000,000 under the Global Program, to be repaid in two equal installments
becoming due on February 9, 2011 and February 9, 2012, with interest accruing at
an annual fixed interest rate of 7.75% to be paid on a half-yearly basis. The
price of the issuance was 100.00% of the nominal value. The funds obtained from
this issueance were allocated to investments in property, plant and equipment
and repayment of loans.

The Bonds Class 3 and Class 4 are guaranteed by Pan American Energy LLC.

1.3. Loan agreements

Pan American Energy LLC (Argentine Branch) obtained the following loans at a
five-year term, with interest compounded bi-annually amortized in monthly
installments: 1) On July 20, 2001, in the amount of US$ 72,051,406, with
interest accruing at an annual rate of 7.54%, with the first installment falling
due on April 19, 2002 and the repayment term being completed on June 20, 2006,
and 2) on September 17, 2001, in the amount of US$ 40,001,944, with interest
accruing at an annual rate of 6.72%, with the first installment falling due on
June 20, 2002 and completing repayment on August 21, 2006. For the purpose of
fixing the interest rate, the Branch entered into integrated derivative
transactions, the impact of which has been included in the cost of the
transactions. Both loans were guaranteed by Pan American Energy LLC until the
repayment thereof in June and August 2006.

On July 11, 2005, the Branch obtained from the International Finance Corporation
(IFC) a loan in the amount of US$ 250,000,000 guaranteed by Pan American Energy
LLC and consisting of three tranches:

- "A" in the amount of US$ 100,000,000 with interest accruing at an annual fixed
rate of 7.56%, through an interest rate swap with IFC, amortizable on a
six-month installments basis, and becoming due in July 2015,

- "B" in the amount of US$ 135,000,000, at an annual fixed rate of 6.97%,
through an interest rate swap with IFC, amortizable on a six-month installments
basis, and becoming due in July 2012, and

- "C" in the amount of US$ 15,000,000, at an annual fixed base rate of 5.66%
plus additional interest calculated in relation to Pan American Energy LLC�s
economic performance, becoming due in July 2016.

The first repayment of principal for tranches "A" and "B" was made on January
15, 2007.

The funds obtained were used to partially fund the 2005 investment program in
San Jorge Gulf.

On July 13, 2007, the Branch obtained from the IFC a loan in the amount of US$
550,000,000, consisting of two tranches that accrue interest at a variable rate:

- "A" in the amount of US$ 150,000,000, amortizable on a half yearly basis and
becoming due in April 2018; and

- "B", sub-tranch "1" in the amount of US$ 158,500,000, amortizable on a half
yearly basis and becoming due in April 2014, and "B" sub-tranch "2" in the
amount of US$ 241,500,000, amortizable on a half yearly basis and becoming due
in April 2015.

The loan is guaranteed by Pan American Energy LLC and the funds obtained are
being applied to partially fund the investment program that the Company will
undertake in the Cerro Drag�n area in San Jorge Gulf basin, located in the
provinces of Santa Cruz and Chubut.

As of December 31, 2007, the amount of US$ 400,000,000 of such loan had been
disbursed. The remaining U$S 150,000,000 was disbursed in January 2008.

2. Balance sheet items as of December 31, 2007 (in pesos)

                       Balance sheet   Balance sheet   Balance sheet   Balance sheet   Balance sheet
                            as of           as of           as of           as of           as of
                          12/31/2007      12/31/2006      12/31/2005      12/31/2004      12/31/2003
                       --------------- --------------- --------------- --------------- ---------------
Current assets           1,260,904,810   1,235,627,955   1,193,228,984     659,203,025     508,446,665

Non current assets       7,446,314,957   5,910,041,926   4,879,105,847   4,198,334,101   3,928,552,138
                       --------------- --------------- --------------- --------------- ---------------

Total                    8,707,219,767   7,145,669,881   6,072,334,831   4,857,537,126   4,436,998,803
                       =============== =============== =============== =============== ===============

Current liabilities      1,706,399,649   2,038,446,446   1,384,514,484   1,416,818,735   1,193,557,856

Non current
 liabilities             3,669,958,237   2,989,464,507   2,164,983,591   1,367,102,560   1,561,029,726
                       --------------- --------------- --------------- --------------- ---------------

Subtotal                 5,376,357,886   5,027,910,953   3,549,498,075   2,783,921,295   2,754,587,582
                       --------------- --------------- --------------- --------------- ---------------
Account with Head
 Office                  2,869,622,874   1,656,519,921   2,061,597,749   1,634,155,831   1,242,951,221

Capital allocated to
 the Branch                221,779,007     221,779,007     221,779,007     200,000,000     200,000,000

Capital adjustment         239,460,000     239,460,000     239,460,000     239,460,000     239,460,000
                       --------------- --------------- --------------- --------------- ---------------

Total                    8,707,219,767   7,145,669,881   6,072,334,831   4,857,537,126   4,436,998,803
                       =============== =============== =============== =============== ===============

3. Income statement items as of December 31, 2007 (in pesos)

                             Fiscal year    Fiscal year    Fiscal year    Fiscal year   Fiscal year
                                ended          ended          ended          ended          ended
                              12/31/2007     12/31/2006     12/31/2005     12/31/2004     12/31/2003
                            -------------- -------------- -------------- -------------- -------------
Ordinary operating income    2,573,221,966  2,743,659,781  1,892,940,989  1,345,594,475   962,439,720

Financial results           ( 334,318,829) ( 157,229,580) ( 111,002,384) ( 162,139,929) (278,812,283)

Other income and expenses -
 net                         ( 24,199,544)  ( 41,522,382) ( 100,766,855)  ( 95,409,580) ( 89,107,077)
                            -------------- -------------- -------------- -------------- -------------

Income before taxes          2,214,703,593  2,544,907,819  1,681,171,750  1,088,044,966   594,520,360

Income tax/minimum deemed
 income tax                 ( 831,214,623) ( 896,407,452) ( 609,797,133) ( 409,943,143) (248,894,158)

Deferred tax                    52,253,813   ( 3,463,245)     14,847,018     86,414,740   161,016,474
                            -------------- -------------- -------------- -------------- -------------

Net income                   1,435,742,783  1,645,037,122  1,086,221,635    764,516,563   506,642,676
                            ============== ============== ============== ============== =============

4. Statistical data

                                Fiscal year        Fiscal year       Fiscal year       Fiscal year        Fiscal year
                                   ended              ended             ended             ended              ended
                                 12/31/2007        12/31/2006        12/31/2005         12/31/2004        12/31/2003
                             ------------------ ----------------- ----------------- ------------------ -----------------
                              In cubic meters    In cubic meters   In cubic meters   In cubic meters    In cubic meters
                             ------------------ ----------------- ----------------- ------------------ -----------------
Production of crude oil               6,150,764         6,123,609         5,899,233          5,721,813         5,279,853
Sale of crude oil                     6,135,234         6,146,250         5,688,359          5,534,021         5,289,407

                             In thousand cubic  In thousand cubic In thousand cubic In thousand cubic  In thousand cubic
                                   meters             meters            meters            meters             meters
                             ------------------ ----------------- ----------------- ------------------ -----------------

Production of natural gas             5,229,944         4,887,081         4,447,626          4,187,349         3,411,061
Sale of natural gas                   5,310,947         4,777,025         4,457,984          3,972,402         3,149,750
Transportation of natural
 gas                                      2,756            15,159           307,242            358,903           281,921

                                  In tons            In tons           In tons           In tons            In tons
                             ------------------ ----------------- ----------------- ------------------ -----------------

Production of L.P.G.                     75,337           104,647            66,910             64,577            58,940
Sale of L.P.G.                           62,342           105,810            60,480             69,597            72,585

5. Ratios

                          Financial       Financial       Financial       Financial       Financial
                           statements     statements      statements      statements      statements
                             as of          as of           as of           as of           as of
                          12/31/2007      12/31/2006      12/31/2005      12/31/2004      12/31/2003
                         -------------  --------------  --------------  --------------  --------------

Liquidity                         0.74            0.61            0.86            0.47            0.43
Indebtedness                      1.60            2.37            1.41            1.34            1.64
Tied -up funds                    0.86            0.83            0.80            0.86            0.89
Solvency                          0.62            0.42            0.71            0.74            0.61
Return before income tax
 / minimum deemed income
 tax                              1.05            1.01            0.81            0.65            0.34
Net return                        0.68            0.65            0.52            0.45            0.29

6. Business prospects

Pan American Energy LLC (Argentine Branch) is working to maintain and increase
its operating efficiency in connection with the oil and gas exploration and
production, to continue increasing its share in hydrocarbon production in
Argentina, satisfying in this way the needs derived from a sustained growth rate
of the country's economy as well as to comply with its existing contractual
obligations. The Branch strives to provide its personnel and contractors with
healthy and safe working conditions while preserving the environment.

The Branch is strongly engaged with the concerns and challenges posed by the
communities where it operates, by developing different social responsibility
programs (CSR).

During fiscal year 2007, the Branch's oil production grew by 0.4% and natural
gas production rose by 7.0% with respect to the prior fiscal year. This growth
results from the active investment program successfully implemented by Pan
American Energy in the last years, which has allowed it to double hydrocarbon
production from 1999 to 2006.

After the 2002 crisis, the country has managed to achieve high gross domestic
product (GDP) growth with relatively low inflation rates though growing recently
and, a stable currency, with unemployment rates that have been significantly
reduced.

In fiscal year 2007, the GDP grew by 8.7% compared with the prior fiscal year,
which indicates that a growing trend - initiated 23 quarters ago - continues. It
is estimated that the gross domestic product GDP will continue growing in a
sustainable way in 2008. The unemployment rate is about 7.5%.

The Federal Government exceeded the primary fiscal surplus expected for 2007 by
22%, reaching a primary fiscal surplus of 25,670 million pesos, up 10.8% with
respect to the prior fiscal year. The level of foreign indebtedness as of
September 30, 2007 increased with respect to the same date of the prior fiscal
year and amounted to US$ 137,114 million. The country's international reserves
amounted US$ 46,176 million as of December 31, 2007, 44.1% higher than those for
the prior fiscal year.

The increase in the oil industry costs is a source of concern, since it clearly
exceeds the general increase in prices.

As previously informed, revenues from the exploration and production of oil and
gas were affected by the amendments to the regulations in force. In the case of
oil, as from March 2002, an increasing rate of export tariffs on exports has
been applied, which has also affected the sales prices in the domestic market.
On November 15, 2007 the Ministry of Economy and Production of Argentina issued
Resolution 394/07 by which export tariffs on oil and by products exports were
significantly increased for sales of oil above $ 60.9 / barrel. The fourth
quarter and fiscal year 2007 results fully reflect the impact of this increase.

In the case of natural gas, in January 2002, the wellhead price of natural gas
was redenominated into pesos and frozen and, afterwards, export tariffs on
exports and quantitative restrictions to them were established. In April 2004,
the Secretary of Energy and the natural gas producers signed an agreement named
"regularization of wellhead prices". This agreement had a term that had expired
on December 31, 2006, after which, and at the request of the related
authorities, a new agreement was signed that shall be in force until December
31, 2011.

The new agreement, approved last June by Resolution 599/07 of the Secretary of
Energy, compels producers (including the Branch) to satisfy the domestic demand
up to the levels reached in 2006 plus the growth of the residential market
during the validity thereof by setting out new guidelines for price changes.

In relation to export tariffs on gas exports, on July 25, 2006, the Ministry of
Economy, through Resolution No. 534/2006, increased them to US$ 2,25 per million
BTU.

On June 29, 2006, the Federal Government signed a form contract with the
Republic of Bolivia to import gas from such country. In October 2006, ENARSA and
Yacimientos Petrol�feros Fiscales Bolivianos agreed on the sale of Bolivian
natural gas having established an initial price of US$ 5 per million of BTU with
a maximum daily volume of 7.7 million cubic meters up to a maximum daily volume
of 27.7 million cubic meters in year 2010. This contract provides for an
extension of one year. The volume proposed for 2010/2011 will be obtained once
the gas pipeline named Noreste Argentino is built and the increase required in
the gas production capacity of Bolivia is ensured. During the last months, the
gas availability by Bolivia was not enough to meet the supply commitment assumed
with Argentina.

During 2007, the various unions gathering workers who perform tasks in the oil
fields operated by the Branch made claims for a salary increase and other labor
benefits. In the first half of the year, such claims were peacefully made and,
as a result, no action measures affecting operations were taken. Nonetheless, in
July, the unions took direct action measures which affected production and
operations in our oil fields.

During fiscal year 2007, the Branch has continued with its investment plans with
a view to expanding its business and contributing to satisfying the growing
energy demand. The commitments assumed referred to in the following paragraphs
strengthen these expansion plans.

On December 6, 2006, Law Nr. 26197, known as "Hydrocarbons Short Law", was
passed. This law complied with the constitutional provision of transferring the
original ownership of the natural resources contained in the subsurface from the
Federal State to the producing provinces where oil fields are located.

Within this framework, the Branch entered into with the Argentine provinces of
Chubut (04/27/2007) and Santa Cruz (06/25/2007) two investment commitments and
agreements for the extension of the term of the concession for hydrocarbon
exploitation for a ten-year period in the blocks known as Cerro Drag�n, the area
of which is extended in the territory of both provinces, and Piedra Clavada and
Koluel Kaike in the province of Santa Cruz. The agreements expired between 2016
and 2017.

These agreements provided for, among other obligations, minimum investments of
US$ 2,000,000,000 in the Province of Chubut and of US$ 500,000,000 in the
Province of Santa Cruz. These investments are to be made before 2017 and are
destined to onshore activities. Other investments of US$ 1,000,000,000 in the
Province of Chubut and of US$ 300,000,000 in the Province of Santa Cruz are to
be made before 2027.

The agreements also provided for a US$ 80,000,000 investment commitment for
offshore exploration, at the Branch's own risk, by means of two joint ventures
(UTEs) with the companies Petrominera (owned by the province Chubut) and
Fomicruz (owned by the province of Santa Cruz). If the Branch makes commercial
discoveries, an additional investment commitment will be required in the amount
of US$ 500,000,000 for the development of the offshore fields to be discovered.

The creation of the UTEs referred to in the preceding paragraph is consistent
with the provisions of sections 11 and 95 of the Hydrocarbons Law, which allows
state-owned companies to enter into agreements and create companies,
partnerships or other associations with individuals or entities for the
development of their activities.

The operation agreements executed with state-owned companies also fall within
the scope of the referred Law, and will be enforced as from the year 2027,
subject to compliance with the investments and Pan American Energy's exploration
success, in that it will have developed sufficient reserves to continue with the
production of the fields of those areas as from that year.

The agreement with the province of Chubut was ratified by provincial law No.
5616 passed by the Provincial Congress on May 24, 2007, enacted by decree No.
500/2007 and published in the Official Bulletin on May 28, 2007.

The Government of the Province of Santa Cruz has sent the agreement to the
Provincial Congress for its approval, which is pending.

The execution of these agreements proposes a new horizon to sustain the increase
in production and reserves maintained by Pan American Energy in the Golfo San
Jorge basin. This new horizon shall allow addressing long-term projects
requiring sound investments, new technologies and teams working for the future.

Pan American Energy, based on its exploration activities in Cerro Drag�n block,
has been able to find new oil and natural gas reserves, which were identified in
the Northern and Central areas of such block, in the Province of Chubut,
totaling one hundred million barrels of oil equivalent.

On October 28, 2007, the presidential, and other governmental authorities
elections took place in the country. Thus, the elections schedule that started
several months ago in different provinces of the country was completed. These
elections proved to be a new milestone in the history of the country's democracy
and support the democratic and institutional regularization process that started
24 years ago. The new administration is expected to maintain the current
policies in terms of hydrocarbon exploration and production.

Buenos Aires, March 7, 2008

Daniel Grinstein

Attorney in-fact

FINANCIAL STATEMENTS as of December 31, 2007

SUPPLEMENTARY INFORMATION TO THE FINANCIAL STATEMENTS AS OF DECEMBER 31, 2007
REQUIRED BY SECTION 68 OF THE REGULATIONS OF THE BUENOS AIRES STOCK EXCHANGE

Overall issues about the Branch's activity:

1. Specific and significant legal requirements which imply contingent
suspensions or changes of benefits provided for by such regulations:

The Branch is not subject to specific and significant legal requirements, which
may imply the contingent suspension or change of benefits provided for by such
regulations, except as disclosed in notes to the financial statements.

2. Significant changes in the Branch's activities or other similar circumstances
that affect the comparison of the financial statements with prior years, or with
those to be presented in future years.

There are no changes in the Branch's activities that significantly affect the
comparison of the financial statements as of December 31, 2007.

3. Breakdown of receivables and payables as per section 68, subsection 3.

3.a) The breakdown of receivables and payables based on the maturity thereof is
disclosed in Exhibit H to the financial statements.

The following receivables without any established term included in the referred
Exhibit H are due:

                                              Current receivables
                                                       $
                                             ----------------------
Due from October to December 2007                         7,095,134
Due from July to September 2007                          24,600,701
Due from April to June 2007                               4,516,657
Due from January to March 2007                            2,311,832
Due from January to December 2006                        16,947,546
Due from January to December 2005                         2,963,901
Due from January to December 2004                           654,292
Due from January to December 2003                         1,903,688
Due from January to December 2002                         1,054,721
Due from January to December 2001                           183,996
Due from January to December 2000                            63,348
                                             ----------------------
                   Total                                 62,295,816
                                             ======================

There are no overdue payables.

3.b) In connection with the receivables and payables in foreign currency, see
Exhibit F to the financial statements. There are no significant receivables and
payables represented by securities.

3.c) There are no receivables and payables subject to adjustment clauses.

3.d) In connection with the receivables and payables that accrue interest as of
December 31, 2006, see Exhibit H to the financial statements.

4. Corporations Art. 33 Law 19550

None.

5. Receivables or loans with directors, statutory auditors, and relatives
including up to the second degree:

None as of the date of issuance of these financial statements.

6. Physical counts of inventories

Based on the nature of the activity, the Branch carries out physical counts of
most of its inventories. There are no significant slow-moving inventories as of
December 31, 2007 for which an allowance has not been set up.

7. Current values

The valuation method of inventories is disclosed in Note 3.2.d) to the financial
statements.

8. Property, plant and equipment

No items of property, plant and equipment have been subject to appraisal.

To date, there are no property, plant and equipment items that are not in use
due to obsolescence.

9. Interests in other companies

None. The Branch's participating interests in joint operations and other
entities are disclosed in Note 2 to the financial statements.

10. Recoverable value

The recoverable value of inventories and fixed assets, used as a limit to their
valuation for financial reporting purposes, have been determined based on the
net realizable values and values in use, the latter defined as the expected net
cash flows that would result from both the use of the assets and the disposal
thereof at the end of their useful life.

11. Insurance

As of December 31, 2007, the insurance taken on the Branch's assets are as
follows:

Covered

              Insured assets                       Insured risk         Covered amount
------------------------------------------- --------------------------- --------------
                                                                        Thousand US$
Equipment, facilities and pipelines
applied to exploitation and transportation  Physical damage                    702,815
Equipment, facilities and pipelines
applied to exploitation and transportation  Liability insurance                 10,000
Wells                                       Control, re-drilling, spill         72,037

Additionally, the Branch has taken the following policies: workers compensation
insurance, directors and officers liability insurance and automobile liability
insurance.

12. Negative and positive contingencies

To calculate the related accruals, all available elements of judgment and
probability of occurrence have been considered (see Notes 10, 13 and Exhibit D
to the basic financial statements).

13. Contingent events as of the date of issuance of the financial statements
with moderate likelihood of occurrence, the financial effects of which have not
been fully recorded as of December 31, 2007.

None.

Irrevocable advances for future subscriptions

14. As of December 31, 2007 there are no irrevocable advances for future
subscriptions.

15. There are no preferred shares as of the date of issuance of these financial
statements.

16. As of the date of issuance of these financial statements, the Branch has no
restrictions on the distributions of earnings, except as indicated in Note 10.

Buenos Aires, March 7, 2008

Daniel Grinstein

Attorney in-fact

 Translation from the original prepared in Spanish for publication in Argentina


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