UNIV. -11- SEC. -1-

Oil · District 08 · Lease #4071

Operator: OXY USA INC.

Fields: MARTIN (ELLENBURGER)

Cum Oil

4k BBL

Cum Gas

6k MCF

casinghead

Wells

4

Production

1993-01 — 1994-10

Peak Month

1993-01

Production History

Cum Oil: 3,922 BBL Cum Gas: 5,924 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

425 BBL/mo

Di (annual)

168.1%

b-factor

0.0

EUR

3,032 BBL

R-squared

0.398

type

exponential

Operator History (from monthly production reports)

2026-05 — 2026-07 HILCORP ENERGY COMPANY 3 mo

2007-09 — 2026-04 OXY USA INC. 224 mo

2002-01 — 2007-08 BP AMERICA PRODUCTION COMPANY 68 mo

1994-06 — 2001-12 ARCO PERMIAN 91 mo

1993-01 — 1994-05 ARCO OIL & GAS CO. 17 mo

Wells (4)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1A	42-003-00433	OXY USA INC.	4	9,060	2005-11-23
1D	42-003-00451	OXY USA INC.	3	8,950	2005-11-08
C 1	42-003-00438	OXY USA INC.	3	9,100	2002-07-10
3A	42-003-00293	OXY USA INC.	2	8,920	2000-03-09