POWELL "20"

Oil · District 08 · Lease #34851

Operator: VANGUARD PERMIAN, LLC

Fields: COBRA (WOLFCAMP)

Cum Oil

246k BBL

Cum Gas

799k MCF

casinghead

Wells

1

Production

1996-02 — 2019-08

Peak Month

1996-08

Production History

Cum Oil: 245,851 BBL Cum Gas: 799,436 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,924 BBL/mo

Di (annual)

21.7%

b-factor

0.1

EUR

240,754 BBL

R-squared

0.920

type

hyperbolic

Operator History (from monthly production reports)

2017-07 — 2020-10 OXY USA INC. 40 mo

2015-05 — 2017-06 VANGUARD OPERATING, LLC 26 mo

2013-04 — 2015-04 VANGUARD PERMIAN, LLC 25 mo

1998-09 — 2013-03 RANGE PRODUCTION COMPANY 175 mo

1998-04 — 1998-08 LOMAK PRODUCTION COMPANY 5 mo

1996-02 — 1998-03 TREND EXPLORATION COMPANY 26 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
13D	42-173-32595	OXY USA INC.	1	8,800	1996-01-19