Supplementary Information On Oil, Ngl and Natural Gas Reserves (Unaudited) (Tables)

12 Months Ended

Sep. 30, 2012

Supplementary Information on Oil, Ngl and Natural Gas Reserves (Unaudited) [Abstract]

Summary of capitalized costs of oil and natural gas properties and related depreciation, depletion and amortization

	2012			2011
Producing properties	$	275,997,569		$	230,554,198
Non-producing minerals		9,018,731			8,792,980
Non-producing leasehold		1,123,812			1,102,988
Exploratory wells in progress		8,018			1,204,382
		286,148,130			241,654,548
Accumulated depreciation, depletion and amortization		(164,652,199	)		(145,664,726	)
Net capitalized costs	$	121,495,931		$	95,989,822

Summary of costs incurred in oil and natural gas producing activities

	2012		2011		2010
Property acquisition costs	$	20,404,465	$	5,140,862	$	742,005
Exploration costs		1,210,417		4,837,451		530,931
Development costs		24,578,943		17,310,808		10,685,088
	$	46,193,825	$	27,289,121	$	11,958,024

Summary of net quantities of proved, developed and undeveloped oil and natural gas reserves

	Proved Reserves
	Oil			NGL (1)			Natural Gas
	(Barrels)			(Barrels)			(Mcf)
September 30, 2009		920,873			—			54,027,810
Revisions of previous estimates		47,999			—			15,762,883
Divestitures		(487	)		—			(7,778	)
Extensions, discoveries and other additions		59,003			—			36,689,882
Production		(102,379	)		—			(8,302,342	)
September 30, 2010		925,009			—			98,170,455
Revisions of previous estimates		(59,360	)		791,648			769,676
Acquisitions		—			—			3,189,520
Extensions, discoveries and other additions		82,230			—			8,005,990
Production		(104,141	)		—			(8,297,657	)
September 30, 2011		843,738			791,648			101,837,984
Revisions of previous estimates		8,627			(76,794	)		(27,389,752	)
Acquisitions		—			—			19,075,529
Extensions, discoveries and other additions		373,097			172,602			29,062,593
Production		(153,143	)		(98,714	)		(9,072,298	)
September 30, 2012		1,072,319			788,742			113,514,056

Summary of proved developed and undeveloped reserves

	Proved Developed Reserves						Proved Undeveloped Reserves
	Oil		NGL		Natural Gas		Oil		NGL		Natural Gas
	(Barrels)		(Barrels)		(Mcf)		(Barrels)		(Barrels)		(Mcf)
September 30, 2010		861,240		—		57,344,190		63,769		—		40,826,265
September 30, 2011		759,989		386,774		60,193,878		83,749		404,874		41,644,106
September 30, 2012		849,548		494,160		65,733,119		222,771		294,582		47,780,937

Summary of proved undeveloped reserves

Beginning proved undeveloped reserves	44,575,844
Proved undeveloped reserves transferred to proved developed	(5,393,421	)
Revisions	(22,369,152	)
Extensions and discoveries	24,458,980
Purchases	9,612,804
Ending proved undeveloped reserves	50,885,055

Summary Of Standardized measure computations since these estimates reflect the valuation process

	2012			2011			2010
Future cash inflows	$	408,694,869		$	494,523,456		$	489,691,155
Future production costs		(135,516,703	)		(146,168,829	)		(148,727,914	)
Future development costs		(33,167,310	)		(43,425,811	)		(52,975,820	)
Asset retirement obligation		(2,122,950	)		(1,843,875	)		(1,730,369	)
Future income tax expense		(83,543,516	)		(107,111,317	)		(99,118,090	)
Future net cash flows		154,344,390			195,973,624			187,138,962
10% annual discount		(86,930,102	)		(117,591,190	)		(114,638,553	)
Standardized measure of discounted future net cash flows	$	67,414,288		$	78,382,434		$	72,500,409

Summary of changes in standardized measure of discounted future net cash flow

	2012			2011			2010
Beginning of year	$	78,382,434		$	72,500,409		$	53,746,508
Changes resulting from:
Sales of oil, NGL and natural gas, net of production costs		(30,226,927	)		(33,570,621	)		(34,429,083	)
Net change in sales prices and production costs		(45,178,377	)		(2,697,833	)		30,806,970
Net change in future development costs		4,618,147			4,177,910			(26,093,254	)
Net change in asset retirement obligation		(134,604	)		(51,098	)		(48,185	)
Extensions and discoveries		34,216,533			11,938,029			53,274,047
Revisions of quantity estimates		(27,419,576	)		7,046,873			28,946,810
Acquisitions (divestitures) of reserves-in-place		20,160,327			4,480,858			(15,706	)
Accretion of discount		13,644,203			12,523,091			8,066,959
Net change in income taxes		10,735,694			(5,329,092	)		(25,807,417	)
Change in timing and other, net		8,616,434			7,363,908			(15,947,240	)
Net change		(10,968,146	)		5,882,025			18,753,901
End of year	$	67,414,288		$	78,382,434		$	72,500,409