COTTON "A"

Oil · District 8A · Lease #18666

Operator: SHIDLER, MARK L., INC.

Fields: WELLMAN (FUSSELMAN)

Cum Oil

276k BBL

Cum Gas

1k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

2025-05

Production History

Cum Oil: 275,613 BBL Cum Gas: 1,121 MCF

RRC production reported through Apr 2026 · recent months incomplete

Operator History (from monthly production reports)

2004-04 — 2026-07 SHIDLER, MARK L., INC. 268 mo

2000-10 — 2004-03 REEF EXPLORATION, INC. (A-1) 42 mo

1998-03 — 2000-09 CROSS TIMBERS OPERATING COMPANY 31 mo

1993-01 — 1998-02 OXY USA INC. 62 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-445-00447	SHIDLER, MARK L., INC.	2	12,612	1981-11-18