UNIVERSITY "21"

Oil · District 7C · Lease #8145

Operator: STALEY OPERATING CO.

Cum Oil

6k BBL

Cum Gas

8k MCF

casinghead

Wells

1

Production

1993-01 — 2004-06

Peak Month

1997-03

Production History

Cum Oil: 5,540 BBL Cum Gas: 7,814 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

87 BBL/mo

Di (annual)

520.7%

b-factor

0.0

EUR

201 BBL

R-squared

0.762

type

exponential

Operator History (from monthly production reports)

2004-10 — 2006-06 ENDEAVOR ENERGY RESOURCES L.P. 21 mo
1998-09 — 2004-09 RANGE PRODUCTION COMPANY 73 mo
1994-05 — 1998-08 LOMAK PRODUCTION COMPANY 52 mo
1993-01 — 1994-04 STALEY OPERATING CO. 16 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2ENDEAVOR ENERGY RESOURCES L.P.12,8001979-10-15