Supplemental Information On Oil And Natural Gas Producing Activities (Tables)

12 Months Ended

Dec. 31, 2019

Supplemental Information On Oil And Natural Gas Producing Activities

Schedule Of Capitalized Costs

The following table sets forth our capitalized costs as of December 31, 2019 and 2018 (in thousands):

	December 31,
	2019		2018
Capitalized costs at the end of the period:⁽ᵃ⁾
Oil and natural gas properties and related equipment (successful efforts method)
Proved property	$	112,476	$	112,173
Less: Accumulated depreciation, depletion, amortization and impairments		(69,541)		(65,647)
Oil and natural gas properties and equipment, net	$	42,935	$	46,526

(a) Capitalized costs include the cost of equipment and facilities for our oil and natural gas producing activities. Proved property costs include capitalized costs for leaseholds holding proved reserves; development wells and related equipment and facilities (including uncompleted development well costs); and support equipment. Unproved property costs include capitalized costs for oil and natural gas leaseholds where proved reserves do not exist.

Schedule Of Costs Incurred For Oil And Natural Gas Producing Activities

The following table sets forth costs incurred for oil and natural gas producing activities for the years ended December 31, 2019 and 2018 (in thousands):

	Years Ended December 31,
	2019		2018
Costs incurred for the period:
Acquisition of properties
Proved	$	—	$	—
Development costs		131		11
Oil and natural gas properties and equipment, net	$	131	$	11

Schedule Of Changes In Proved Developed And Undeveloped Reserves

				Natural Gas
	Total	Oil	Natural Gas	Liquids
	(MMBoe)	(in MMBoe)	(in MMBoe)	(in MMBoe)
Net proved reserves
December 31, 2017	5,265	3,246	1,109	910
Sales of reserves in place	(1,105)	(272)	(322)	(511)
Revisions of previous estimates	(268)	(199)	(261)	192
Production	(439)	(296)	(72)	(71)
December 31, 2018	3,453	2,479	454	520
Sales of reserves in place	—	—	—	—
Revisions of previous estimates	(145)	(10)	(67)	(68)
Production	(309)	(228)	(39)	(42)
December 31, 2019	2,999	2,241	348	410
Proved developed reserves:
December 31, 2018	3,453	2,479	454	520
December 31, 2019	2,999	2,241	348	410

Summary Of Standardized Measure Of Estimated Discounted Future Cash Flows From Properties

The following table summarizes the standardized measure of estimated discounted future cash flows from the oil and natural gas properties (in thousands):

	Years Ended December 31,
	2019		2018
Future cash inflows	$	144,628	$	186,675
Future production costs		(80,007)		(99,187)
Future estimated development costs		(3,400)		(4,043)
Future net cash flows		61,221		83,445
10% annual discount for estimated timing of cash flows		(22,871)		(31,199)
Standardized measure of discounted estimated future net cash flows related to proved oil and natural gas reserves	$	38,350	$	52,246

Summary Of Change In Standardized Measure Of Estimated Discounted Future Net Cash Flows

The following table summarizes the principal sources of change in the standardized measure of estimated discounted future net cash flows (in thousands):

	Years Ended December 31,
	2019		2018
Beginning of the period	$	52,246	$	56,697
Sales and transfers of oil and natural gas, net of production costs		(8,006)		(14,795)
Net changes in prices and production costs related to future production		(7,330)		17,392
Changes in development costs		35		207
Revisions of previous quantity estimates		(1,942)		(4,203)
Purchases and sales of reserves in place		—		(5,423)
Accretion discount		5,225		5,670
Change in production rates, timing, and other		(1,878)		(3,299)
Standardized measure of discounted future net cash flows related to proved oil and natural gas reserves	$	38,350	$	52,246