Oil and Gas Reserves Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Summary of Changes in Net Quantities of Crude Oil and Natural Gas Reserves

Set forth below is a summary of the changes in Comstock's net quantities of oil and natural gas reserves for each of the three years in the period ended December 31, 2016:

	2014						2015						2016
	Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)
Proved Reserves:
Beginning of year		21,976			452,653			20,854			495,266			9,229			569,596
Revisions of previous estimates		(2,182	)		3,998			(5,096	)		(41,437	)		(406	)		130,416
Extensions and discoveries		5,373			78,383			231			168,539			64			285,076
Sales of minerals in place		—			—			(3,671	)		(5,096	)		(222	)		(58,942	)
Production		(4,313	)		(39,768	)		(3,089	)		(47,676	)		(1,388	)		(53,678	)
End of year		20,854			495,266			9,229			569,596			7,277			872,468
Proved Developed Reserves:
Beginning of year		13,914			344,278			16,247			324,598			9,229			311,130
End of year		16,247			324,598			9,229			311,130			7,277			321,527

Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves

The following table sets forth the standardized measure of discounted future net cash flows relating to proved reserves at December 31, 2015 and 2016:

	2015			2016
	(In thousands)
Cash Flows Relating to Proved Reserves:
Future Cash Flows	$	1,763,146		$	2,267,877
Future Costs:
Production		(705,146	)		(798,454	)
Development and Abandonment		(362,874	)		(502,848	)
Future Income Taxes		(1,231	)		(6,488	)
Future Net Cash Flows		693,895			960,087
10% Discount Factor		(321,756	)		(530,812	)
Standardized Measure of Discounted Future Net Cash Flows	$	372,139		$	429,275

Changes in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves

The following table sets forth the changes in the standardized measure of discounted future net cash flows relating to proved reserves for the years ended December 31, 2014, 2015 and 2016:

	2014			2015			2016
	(In thousands)
Standardized Measure, Beginning of Year	$	807,217		$	1,090,660		$	372,139
Net change in sales price, net of production costs		5,911			(751,774	)		(45,379	)
Development costs incurred during the year which were previously estimated		344,590			157,390			45,648
Revisions of quantity estimates		(40,993	)		(111,454	)		113,583
Accretion of discount		105,400			114,427			37,251
Changes in future development and abandonment costs		(10,909	)		14,901			5,315
Changes in timing and other		(19,028	)		(44,439	)		(38,071	)
Extensions and discoveries		163,559			56,216			70,149
Sales of minerals in place		—			(43,694	)		(22,449	)
Sales, net of production costs		(458,254	)		(163,336	)		(107,253	)
Net changes in income taxes		193,167			53,242			(1,658	)
Standardized Measure, End of Year	$	1,090,660		$	372,139		$	429,275

- Definition

Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources that are intended to be upgraded during the period as of the beginning of the period, changes in quantities during the period, and as of the end of the period.

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- Definition

Tabular disclosure of the future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchase under long-term agreements in which the enterprise participates in the operation of the properties on which the oil and gas is located or otherwise serves as the producer. This information is presented in aggregate and for each geographic area for which reserve quantities are disclosed.

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