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HARRIS

Oil · District 09 · Lease #20200

Operator: UMC PETROLEUM CORPORATION

Fields: RATCLIFF (STRAWN 4575)

Cum Oil

98k BBL

Cum Gas

41 MCF

casinghead

Wells

1

Production

1993-01 — 2026-02

Peak Month

1998-01

Production History

Cum Oil: 98,443 BBL Cum Gas: 41 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

669 BBL/mo

Di (annual)

26.5%

b-factor

1.0

EUR

80,489 BBL

R-squared

0.902

type

hyperbolic

Operator History (from monthly production reports)

2011-01 — 2026-07 KARPER OIL & GAS CORPORATION 187 mo
2008-03 — 2010-12 ABRAXAS PETROLEUM CORPORATION 34 mo
2003-12 — 2008-02 ST. MARY LAND & EXPLORATION CO. 51 mo
2000-12 — 2003-11 ST. MARY OPERATING COMPANY 36 mo
1997-10 — 2000-11 COLT RESOURCES CORPORATION 38 mo
1996-05 — 1997-09 DENVERAMERICAN PETROLEUM, LLC 17 mo
1993-01 — 1996-04 UMC PETROLEUM CORPORATION 40 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-077-31477KARPER OIL & GAS CORPORATION16,3001979-09-24