By Nicole Lundeen

VIENNA--Austrian oil and gas company OMV AG (OMV.VI) reported Wednesday a fall in its hydrocarbon production during the second quarter as security issues in Libya contributed to shut-ins, while technical problems in Kazakhstan curbed output.

Total hydrocarbon production in the second quarter totaled 297,000 barrels of oil equivalent per day, down from 311,000 boe/d in the first quarter of 2014 and unchanged from a year earlier.

OMV said declines in Libya and Kazakhstan were partially offset by higher production in Austria and Romania, as well as the successful start of production at Gudrun in Norway. While gas sale volume had increased on a quarterly basis, oil sales fell 18% due to "significantly lower liftings mainly in Norway and Libya," said OMV.

The production start at Gudrun and higher personnel costs in Romania increased OMV's production costs compared with the first quarter, the company said.

OMV added that oil price developments had a "marginally positive impact" on the quarter.

The company said its gas and power business continues to face a challenging market environment. Gas sales and trading volumes increased on an annual basis to 89.15 terawatt hours, but decreased on a quarterly basis from 131.82 terawatt hours. The increase on an annual basis was due to higher trading volumes, OMV said. It added that the unfavorable U.S. dollar to Turkish Lira exchange rate resulted in a negative Turkish gas margin.

OMV's indicator refining margin increased on the quarter to $1.92/barrel, up from $1.63/barrel in the first quarter and down from $2.48/barrel a year ago. Planned shutdowns of the Petrobrazi and Schwechat refinery and the sale closing of Bayernoil meant refinery utilization rates were lower.

OMV said it had net special charges of 145 million euros ($195.7 million) in the second quarter in relation to an impairment taken on a Kazakhstan asset after an unsuccessful field redevelopment and a write-off of an exploration license in Tunisia.

Write to Nicole Lundeen at nicole.lundeen@wsj.com

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