CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
REVENUES
Oil and gas sales	$ 5,806,860	$ 6,382,869	$ 11,972,710	$ 15,420,629
Well management and operating	143,229	149,274	307,538	305,959
Other	285	243	1,518	554
Total revenues	5,950,374	6,532,386	12,281,766	15,727,142
DIRECT COST OF REVENUES
Production costs	914,143	821,412	2,192,114	2,170,923
Well management and operating	66,261	70,043	145,184	139,710
Depreciation, depletion and amortization	1,618,314	2,270,180	3,236,328	4,517,860
Accretion expense	86,100	93,300	170,300	200,800
Total direct cost of revenues	2,684,818	3,254,935	5,743,926	7,029,293
GENERAL AND ADMINISTRATIVE EXPENSE	557,277	611,160	1,214,961	1,323,968
Total cost of revenues	3,242,095	3,866,095	6,958,887	8,353,261
INCOME FROM OPERATIONS	2,708,279	2,666,291	5,322,879	7,373,881
OTHER INCOME
Interest income	20,662	27,713	39,510	50,147
Gain on sale of property and equipment	0	20,124	2,183	20,124
Total other income	20,662	47,837	41,693	70,271
INCOME BEFORE INCOME TAXES	2,728,941	2,714,128	5,364,572	7,444,152
INCOME TAX EXPENSE (BENEFIT)
Current	30,000	60,000	75,000	120,000
Deferred	(5,000)	(9,000)	(17,000)	(18,000)
Total income tax expense	25,000	51,000	58,000	102,000
NET INCOME	2,703,941	2,663,128	5,306,572	7,342,152
Allocation of Partnership Net Income
Limited Partners	2,672,033	2,631,717	5,243,951	7,255,555
General Partner	31,908	31,411	62,621	86,597
Net Income	$ 2,703,941	$ 2,663,128	$ 5,306,572	$ 7,342,152
Net income per unit (in dollars per unit)	$ 0.47	$ 0.47	$ 0.93	$ 1.29