GLASS

Oil · District 08 · Lease #32512

Operator: QUANTUM RESOURCES MANAGEMENT,LLC

Fields: GARDEN CITY, S. (WOLFCAMP)

Cum Oil

209k BBL

Cum Gas

2.1M MCF

casinghead

Wells

7

Production

1993-01 — 2025-12

Peak Month

2013-11

Production History

Cum Oil: 208,983 BBL Cum Gas: 2,122,146 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,632 BBL/mo

Di (annual)

37.1%

b-factor

0.1

EUR

130,497 BBL

R-squared

0.918

type

hyperbolic

Operator History (from monthly production reports)

2021-12 — 2026-07 LANDMARK IP, LLC 56 mo

2015-01 — 2021-11 BREITBURN OPERATING L.P. 83 mo

2006-12 — 2014-12 QUANTUM RESOURCES MANAGEMENT,LLC 97 mo

2006-05 — 2006-11 CIMAREX ENERGY CO. OF COLORADO 7 mo

1997-05 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 108 mo

1996-08 — 1997-04 BURLINGTON RESOURCES OIL&GAS CO. 9 mo

1993-01 — 1996-07 MERIDIAN OIL INC. 43 mo

Wells (7)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
8	42-173-36681	LANDMARK IP LLC	1	10,500	2014-07-29
7	42-173-36311	LANDMARK IP LLC	2	10,500	2014-01-27
5R	42-173-36027	LANDMARK IP LLC	1	10,250	2013-08-26
6	42-173-36012	LANDMARK IP LLC	1	10,250	2013-08-13
5	42-173-35869	LANDMARK IP LLC	1	10,250	2013-05-29
3	42-173-35771	LANDMARK IP LLC	1	10,250	2013-04-23
1	42-173-31639	LANDMARK IP LLC	3	10,800	1989-11-03