GRAHAM, W. D.

Oil · District 7B · Lease #27863

Operator: MATHIS & SONS, INC.

Fields: CARLILE, SW. (STRAWN)

Cum Oil

176k BBL

Cum Gas

156 MCF

casinghead

Wells

1

Production

1996-05 — 2026-04

Peak Month

1996-07

Production History

Cum Oil: 175,930 BBL Cum Gas: 156 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,141 BBL/mo

Di (annual)

71.5%

b-factor

1.0

EUR

189,949 BBL

R-squared

0.961

type

hyperbolic

Operator History (from monthly production reports)

2017-07 — 2026-07 MATHIS & SONS, INC. 109 mo

2016-02 — 2017-06 COLEMANITE, INC. 17 mo

1996-05 — 2016-01 LYTLE CREEK OPERATING, INC. 237 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-433-33013	MATHIS & SONS, INC.	2	5,500	1995-12-29