< leases

GUTHRIE-DUNBAR "A" UNIT

Oil · District 7C · Lease #11183

Operator: THREE RIVERS OPERATING CO LLC

Fields: HELUMA, SE (DEVONIAN)

Cum Oil

40k BBL

Cum Gas

155k MCF

casinghead

Wells

1

Production

1993-01 — 2022-06

Peak Month

2005-08

Production History

Cum Oil: 39,859 BBL Cum Gas: 154,863 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

257 BBL/mo

Di (annual)

17.4%

b-factor

0.4

EUR

26,407 BBL

R-squared

0.537

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 EXTEX OPERATING COMPANY 66 mo
2013-01 — 2021-01 LEGACY RESERVES OPERATING LP 97 mo
2012-08 — 2012-12 COG OPERATING LLC 5 mo
2011-01 — 2012-07 THREE RIVERS OPERATING CO LLC 19 mo
2007-07 — 2010-12 SAMSON LONE STAR, LLC 42 mo
1996-08 — 2007-06 SAMSON LONE STAR LP 131 mo
1995-04 — 1996-07 SAMSON HYDROCARBONS COMPANY 16 mo
1994-11 — 1995-03 SAMSON RESOURCES COMPANY 5 mo
1993-01 — 1994-10 ORYX ENERGY COMPANY 22 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-461-32241SUN EXPL. & PROD. CO.-MIDLAND19,4501984-08-20