KEYSTONE CATTLE CO.

Oil · District 10 · Lease #1422

Operator: PENNZOIL PETROLEUM COMPANY

Fields: FLYING -W-

Cum Oil

413k BBL

Cum Gas

0 MCF

Wells

7

Production

1993-01 — 2026-03

Peak Month

1993-12

Production History

Cum Oil: 412,752 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,064 BBL/mo

Di (annual)

6.3%

b-factor

0.2

EUR

419,950 BBL

R-squared

0.664

type

hyperbolic

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
213LEGACY RESERVES OPERATING LP311,7772017-06-12
192LEGACY RESERVES OPERATING LP210,5352017-04-10
377LEGACY RESERVES OPERATING LP39,9502009-01-16
376LEGACY RESERVES OPERATING LP211,9002008-11-26
146PENNZOIL EXPLORATION & PROD. CO.29,8002003-07-22
372CHEVRON U. S. A. INC.110,1801985-03-14
315GULF OIL CORP.111,7701980-11-10
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