TUMLINSON-COFFIELD UNIT #1

Oil · District 01 · Lease #10606

Operator: TEXOWA, LLC

Fields: BLAKEWAY (DIXON SAND)

Cum Oil

16k BBL

Cum Gas

39k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

1994-01

Production History

Cum Oil: 15,879 BBL Cum Gas: 38,523 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

106 BBL/mo

Di (annual)

7.2%

b-factor

0.0

EUR

17,046 BBL

R-squared

0.489

type

exponential

Operator History (from monthly production reports)

2021-09 — 2026-07 MCDAY ENERGY CORP. 59 mo

2010-08 — 2021-08 TEXOWA, LLC 133 mo

2009-02 — 2010-07 ANACONDA OIL & GAS 18 mo

2006-06 — 2009-01 TDW EXPLORATION, LLC 32 mo

1999-03 — 2006-05 CARRIZO EXPLORATION, INC. 87 mo

1998-08 — 1999-02 HEARTLAND RESOURCES, INC. 7 mo

1993-02 — 1998-07 CATARINA PETROLEUM L. C. 66 mo

1993-01 — 1993-01 ENERGY DEVELOPMENT CORP. 1 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-127-32689	MCDAY ENERGY CORP.	1	4,900	1985-08-01