Quarterly report pursuant to Section 13 or 15(d)

财产及设备 (Schedule Of 财产及设备) (Details)

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财产及设备 (Schedule Of 财产及设备) (Details) (USD $)
In Thousands, unless otherwise specified
小君. 30, 2013
12月. 31, 2012
Property, Plant and Equipment [Abstract]    
Oil and natural gas properties, full-cost accounting $ 2,065,918 $ 1,611,090
办公室家具及固定装置 4,831 4,476
建筑 3,926 3,926
土地 260 260
财产及设备合计 2,074,935 1,619,752
Accumulated depletion, depreciation, amortization and impairment (717,007) (665,884)
财产和设备,净 $ 1,357,928 $ 953,868