Annual report pursuant to Section 13 and 15(d)

套期保值活动(现金流量套期保值表)(详情)

v2.4.0.6
套期保值活动(现金流量套期表)(详情)(美元)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
衍生工具与套期保值活动的一般讨论[摘要]    
(Reduction) addition to oil and condensate sales $ (1,517) $ (4,720)