KEYSTONE CATTLE COMPANY -A-

Oil · District 08 · Lease #30797

Operator: WOOD, MCSHANE & THAMS

Cum Oil

10k BBL

Cum Gas

86k MCF

casinghead

Wells

7

Production

1993-01 — 2000-10

Peak Month

1993-12

Production History

Cum Oil: 10,372 BBL Cum Gas: 85,684 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

355 BBL/mo

Di (annual)

42.4%

b-factor

0.0

EUR

10,008 BBL

R-squared

0.568

type

exponential

Operator History (from monthly production reports)

2002-04 — 2004-05 GRUY PETROLEUM MANAGEMENT CO. 26 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 (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
229CPRIZE OPERATING COMPANY13,5501986-11-18
400GRUY PETROLEUM MANAGEMENT CO.13,5601986-11-18
219C42-495-01367XTO ENERGY INC.------
224C42-495-01371XTO ENERGY INC.------
233C42-495-01380XTO ENERGY INC.------
309C42-495-30004XTO ENERGY INC.------
47C42-495-01182XTO ENERGY INC.------