BARNSLEY 26 -E-

Oil · District 08 · Lease #31883

Operator: WALSH & WATTS, INC.

Fields: SAND HILLS (CLEAR FORK)

Cum Oil

27k BBL

Cum Gas

150k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

1995-06

Production History

Cum Oil: 27,386 BBL Cum Gas: 149,675 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

189 BBL/mo

Di (annual)

11.2%

b-factor

0.0

EUR

20,212 BBL

R-squared

0.611

type

exponential

Operator History (from monthly production reports)

2021-08 — 2026-07 WALSH & WATTS, INC. 60 mo

2016-09 — 2021-07 MAMMOTH EXPLORATION LLC 59 mo

2004-11 — 2016-08 KLM PETROLEUM CORP. 142 mo

1993-01 — 2004-10 TEXAN PETROLEUM CORPORATION 142 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-103-33831	WALSH & WATTS, INC.	1	4,300	1988-01-07