HILL "A"

Oil · District 08 · Lease #31724

Operator: STEVENS & TULL, INC.

Fields: WARD-ESTES, NORTH

Cum Oil

56k BBL

Cum Gas

247k MCF

casinghead

Wells

5

Production

1993-01 — 2026-02

Peak Month

1995-05

Production History

Cum Oil: 55,529 BBL Cum Gas: 246,896 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

641 BBL/mo

Di (annual)

28.1%

b-factor

0.5

EUR

47,869 BBL

R-squared

0.744

type

hyperbolic

Operator History (from monthly production reports)

2022-08 — 2026-07 LONESOME B, LLC 48 mo

2021-06 — 2022-07 Q NATURAL RESOURCES, LLC 14 mo

2013-12 — 2021-05 P.O.&G. OPERATING, LLC 90 mo

2002-10 — 2013-11 CHAPARRAL ENERGY, L.L.C. 134 mo

1996-09 — 2002-09 CHAPARRAL (USA) ENERGY, INC. 73 mo

1995-02 — 1996-08 ECLIPSE OIL & GAS, INC. 19 mo

1994-10 — 1995-01 DUNE OIL AND GAS, INC. 4 mo

1993-01 — 1994-09 STEVENS & TULL, INC. 21 mo

Wells (5)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
508	42-475-35453	LONESOME B, LLC	2	4,000	2008-10-23
493	42-475-34169	LONESOME B, LLC	1	3,000	1993-07-01
389	42-475-33967	LONESOME B, LLC	1	3,000	1989-12-12
2	42-475-33894	LONESOME B, LLC	1	3,000	1988-04-27
1	42-475-33871	LONESOME B, LLC	1	3,000	1988-02-19