POWELL "20A"

Oil · District 08 · Lease #34865

Operator: VANGUARD PERMIAN, LLC

Fields: COBRA (WOLFCAMP)

Cum Oil

123k BBL

Cum Gas

154k MCF

casinghead

Wells

1

Production

1996-03 — 2016-04

Peak Month

1997-10

Production History

Cum Oil: 122,602 BBL Cum Gas: 154,443 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,933 BBL/mo

Di (annual)

45.7%

b-factor

0.2

EUR

96,053 BBL

R-squared

0.913

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

1996-03 — 1998-03 TREND EXPLORATION COMPANY 25 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
23D	42-173-32599	OXY USA INC.	1	8,800	1996-02-05