< leases

RICKER -25-"3"

Oil · District 7C · Lease #12172

Operator: UMC PETROLEUM CORPORATION

Fields: SPRABERRY (TREND AREA)

Cum Oil

25k BBL

Cum Gas

243k MCF

casinghead

Wells

1

Production

1993-01 — 2011-12

Peak Month

1995-01

Production History

Cum Oil: 24,728 BBL Cum Gas: 243,041 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

245 BBL/mo

Di (annual)

11.8%

b-factor

0.1

EUR

27,314 BBL

R-squared

0.798

type

hyperbolic

Operator History (from monthly production reports)

2025-10 — 2026-07 DE CENTRAL OPERATING, LLC 10 mo
2010-04 — 2025-09 ATLAS OPERATING LLC 186 mo
2008-02 — 2010-03 PIONEER EXPLORATION, LLC 26 mo
2001-07 — 2008-01 PIONEER EXPLORATION, LTD. 79 mo
1997-04 — 2001-06 PIONEER EXPLORATION COMPANY 51 mo
1993-01 — 1997-03 UMC PETROLEUM CORPORATION 51 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
342-383-33374ENDEAVOR ENERGY RESOURCES L.P.18,5001985-01-25