WENDLAND "A"

Oil · District 7C · Lease #11669

Operator: WATCO ENERGY, INC.

Fields: WENDKIRK (CISCO)

Cum Oil

76k BBL

Cum Gas

14k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

2002-05

Production History

Cum Oil: 75,636 BBL Cum Gas: 14,376 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

608 BBL/mo

Di (annual)

23.7%

b-factor

0.0

EUR

30,732 BBL

R-squared

0.657

type

exponential

Operator History (from monthly production reports)

2025-09 — 2026-07 CORE PETRO, LLC 11 mo

2015-08 — 2025-08 TCS PETROLEUM CO., LLC 121 mo

2014-07 — 2015-07 OHLHAUSEN OIL COMPANY 13 mo

2013-08 — 2014-06 TCS PETROLEUM CO., LLC 11 mo

2013-05 — 2013-07 CEDAR OIL COMPANY 3 mo

2007-11 — 2013-04 SCHMID PROPERTIES, INC. 66 mo

2002-07 — 2007-10 PARAGON CORPORATION 64 mo

1997-04 — 2002-06 BENSON & SCHOEN OIL CO., INC. 63 mo

1996-05 — 1997-03 WALSH RESOURCES, INC. 11 mo

1993-01 — 1996-04 WATCO ENERGY, INC. 40 mo

Wells (4)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-081-31423	CORE PETRO, LLC	1	3,800	1986-11-06
7	42-081-00992	CORE PETRO, LLC	1	3,726	1986-02-13
1	42-081-31352	CORE PETRO, LLC	1	5,220	1985-08-16
4	42-081-00979	CORE PETRO, LLC	--	--	--