BARBER

Oil · District 02 · Lease #8168

Operator: WEST TEXAS OPERATING COMPANY,LLC

Fields: BLANCO CREEK (5680)

Cum Oil

7k BBL

Cum Gas

11k MCF

casinghead

Wells

1

Production

1996-04 — 2004-07

Peak Month

1998-07

Production History

Cum Oil: 7,313 BBL Cum Gas: 11,462 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

456 BBL/mo

Di (annual)

343.3%

b-factor

0.4

EUR

2,599 BBL

R-squared

0.479

type

hyperbolic

Operator History (from monthly production reports)

2003-10 — 2026-07 TIZA ENERGY, INC. 274 mo

2002-05 — 2003-09 NEWTON CORP.,THE 17 mo

1999-07 — 2002-04 CORE E & P CORP. 34 mo

1999-02 — 1999-06 CORE ENERGY CORPORATION 5 mo

1998-06 — 1999-01 WEST TEXAS OPERATING COMPANY,LLC 8 mo

1998-05 — 1998-05 OSR OIL & GAS COMPANY 1 mo

1996-04 — 1998-04 FISCHER OPERATING CORPORATION 25 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4	42-391-32044	2 D OIL & GAS LLC	3	6,200	1996-04-19