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TBILISI, Aug 10 (Reuters) - Oil output from BP-led oilfields in Azerbaijan in the first half of 2015 was slightlydown compared to a year earlier, BP-Azerbaijan said on Monday,driving a decline in the country's total oil production.
Daily oil output at the Azeri-Chirag-Guneshli (ACG)oilfields, which account for most of Azerbaijan's production,declined to an average 641,000 barrels per day (bpd) from656,000 bpd in the same period last year and 661,000 bpd in thefirst quarter of this year.
Output from the ACG started to decline in May as BPsuspended operations at one platform in the Caspian Sea, WestAzeri, for planned maintenance on May 21 for 22 days.
"This work was completed safely and is designed to maintainthe long-term ability of the platform to produce in a safe,reliable and environmentally sound way," BP said in its report.
BP said it spent around $359 million in operatingexpenditure and $949 million in capital expenditure on the ACGactivities in the first six months of this year.
Azerbaijan said total crude oil and condensate production inAzerbaijan declined to 20.9 million tonnes in the first half of2015 from 21.2 million a year earlier.
Falling output at the ACG oilfields has been a cause ofconcern in Baku.
BP and its partner, Azeri state energy company SOCAR, triedto calm worries in 2013, saying production had stabilised. Totaloil output rose in 2013 for the first time since 2011, but thedecline resumed in 2014.
Natural gas output from the Shah Deniz offshore field roseto 5.2 billion cubic metres (bcm) in the first six months ofthis year from 4.75 bcm in the same period of 2014.
It produced 1.2 million tonnes of condensate.
Shah Deniz is estimated to contain 1.2-1.5 trillion cubicmetres of gas.
Shah Deniz I has been pumping gas since 2006, while gas fromits second stage is expected to reach Europe by 2019-2020.
Overall gas production in Azerbaijan fell to 14.6 bcm inJanuary-June from 15.1 bcm a year earlier due to lower outputfrom SOCAR.
Azerbaijan plans to produce 40.7 million tonnes of oil and30.2 bcm of gas in 2015. (Reporting by Margarita Antidze; Editing by Jack Stubbs andDavid Evans)