KEYSTONE CATTLE COMPANY

Oil · District 08 · Lease #29385

Operator: STRONGHOLD ENERGY II OPER, LLC

Fields: KEYSTONE, SW. (SAN ANDRES)

Cum Oil

450k BBL

Cum Gas

2.8M MCF

casinghead

Wells

Production

1993-01 — 2026-03

Peak Month

2001-08

Production History

Cum Oil: 449,529 BBL Cum Gas: 2,762,476 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

4,988 BBL/mo

Di (annual)

18.4%

b-factor

0.0

EUR

324,391 BBL

R-squared

0.715

type

exponential

Operator History (from monthly production reports)

2022-04 — 2026-07 BASIN OIL & GAS OPERATING, LLC 52 mo

2021-07 — 2022-03 MECO IV HOLDCO, LLC 9 mo

2019-06 — 2021-06 MECO IV, LLC 25 mo

2019-01 — 2019-05 STRONGHOLD ENERGY II OPER, LLC 5 mo

2000-04 — 2018-12 DEVON ENERGY PRODUCTION CO, L.P. 225 mo

1999-03 — 2000-03 PENNZENERGY EXP. & PROD., L.L.C. 13 mo

1995-02 — 1999-02 PENNZOIL EXPLORATION & PROD. CO. 49 mo

1993-01 — 1995-01 PENNZOIL PETROLEUM COMPANY 25 mo

Wells (28)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1010F	42-495-32886	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-09-28
604F	42-495-32878	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-08-15
606N	42-495-32873	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-08-15
1005G	42-495-32877	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-08-13
1006A	42-495-32876	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-08-13
1009K	42-495-32875	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-08-13
1008G	42-495-32867	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-06-14
1007B	42-495-32850	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-03-07
1002I	42-495-32840	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-02-27
1003A	42-495-32841	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-02-27
1004P	42-495-32842	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-02-27
602D	42-495-32843	BASIN OIL & GAS OPERATING, LLC	1	4,800	2001-02-27
601M	42-495-32812	BASIN OIL & GAS OPERATING, LLC	1	4,500	2000-09-05
1001H	42-495-32811	BASIN OIL & GAS OPERATING, LLC	1	4,800	2000-08-15
373	42-495-31926	BASIN OIL & GAS OPERATING, LLC	2	6,500	1985-12-31
375	42-495-31951	BASIN OIL & GAS OPERATING, LLC	1	4,850	1985-06-11
374	42-495-31927	BASIN OIL & GAS OPERATING, LLC	1	4,850	1985-04-24
369	42-495-31904	BASIN OIL & GAS OPERATING, LLC	1	4,850	1985-02-22
370	42-495-31902	BASIN OIL & GAS OPERATING, LLC	1	4,850	1985-02-22
371	42-495-31903	BASIN OIL & GAS OPERATING, LLC	1	4,850	1985-02-22
368	42-495-31905	BASIN OIL & GAS OPERATING, LLC	1	4,850	1985-02-21
366	42-495-31879	BASIN OIL & GAS OPERATING, LLC	1	4,800	1985-01-21
367	42-495-31878	BASIN OIL & GAS OPERATING, LLC	1	4,800	1985-01-21
364	42-495-31863	BASIN OIL & GAS OPERATING, LLC	1	4,800	1984-11-20
365	42-495-31864	BASIN OIL & GAS OPERATING, LLC	1	4,800	1984-11-20
360	42-495-31820	BASIN OIL & GAS OPERATING, LLC	1	4,850	1984-09-06
363	42-495-31819	BASIN OIL & GAS OPERATING, LLC	1	4,820	1984-09-06
359	42-495-31545	BASIN OIL & GAS OPERATING, LLC	1	4,520	1982-12-15

KEYSTONE CATTLE COMPANY

Production HistoryBeta Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]

Decline Curve Analysis

Operator History (from monthly production reports)

Wells (28)

Production History