< leases

KEYSTONE CATTLE COMPANY

Oil · District 08 · Lease #26628

Operator: WOOD, MCSHANE & THAMS

Fields: KEYSTONE, SW. (SAN ANDRES)

Cum Oil

213k BBL

Cum Gas

450k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 212,878 BBL Cum Gas: 449,759 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,111 BBL/mo

Di (annual)

5.8%

b-factor

0.0

EUR

218,640 BBL

R-squared

0.437

type

exponential

Operator History (from monthly production reports)

2024-05 — 2026-07 FORMENTERA OPERATIONS LLC 27 mo
2021-06 — 2024-04 SADDLEBACK EXPLORATION, LLC 35 mo
2016-12 — 2021-05 BLACKBEARD OPERATING, LLC 54 mo
2013-01 — 2016-11 MERIT ENERGY COMPANY 47 mo
2006-05 — 2012-12 CIMAREX ENERGY CO. OF COLORADO 80 mo
2002-04 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 49 mo
2000-03 — 2002-03 PRIZE OPERATING COMPANY 25 mo
1995-11 — 2000-02 VISTA RESOURCES, INC. (A) 52 mo
1993-01 — 1995-10 WOOD, MCSHANE & THAMS 34 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
642-495-31408FORMENTERA OPERATIONS LLC24,8081992-03-06
6H42-495-31408FORMENTERA OPERATIONS LLC24,8081992-03-06
3C42-495-31269FORMENTERA OPERATIONS LLC24,4871982-03-22