CHIEF UNIT

Oil · District 03 · Lease #23070

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

193k BBL

Cum Gas

430k MCF

casinghead

Wells

1

Production

1996-09 — 2025-01

Peak Month

1996-10

Production History

Cum Oil: 192,587 BBL Cum Gas: 430,007 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,469 BBL/mo

Di (annual)

79.9%

b-factor

0.5

EUR

127,885 BBL

R-squared

0.406

type

hyperbolic

Operator History (from monthly production reports)

2025-06 — 2026-07 REDBUD E & P, INC. 14 mo
2019-08 — 2025-05 INEOS USA OIL & GAS LLC 70 mo
2017-09 — 2019-07 CRAWFORD HUGHES OPERATING CO. 23 mo
2007-08 — 2017-08 ENERVEST OPERATING, L.L.C. 121 mo
2002-12 — 2007-07 ANADARKO E&P COMPANY LP 56 mo
2001-02 — 2002-11 RME PETROLEUM COMPANY 22 mo
1996-09 — 2001-01 UNION PACIFIC RESOURCES COMPANY 53 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RESAGE ENERGY COMPANY412,5001997-05-05