POWELL "4"

Oil · District 08 · Lease #33447

Operator: VANGUARD PERMIAN, LLC

Fields: COBRA (WOLFCAMP)

Cum Oil

375k BBL

Cum Gas

498k MCF

casinghead

Wells

1

Production

1993-01 — 2019-08

Peak Month

1993-01

Production History

Cum Oil: 374,772 BBL Cum Gas: 498,342 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,293 BBL/mo

Di (annual)

6.7%

b-factor

0.1

EUR

421,323 BBL

R-squared

0.791

type

hyperbolic

Operator History (from monthly production reports)

2017-07 — 2020-09 OXY USA INC. 39 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

1993-01 — 1998-03 TREND EXPLORATION COMPANY 63 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
13D	42-173-32200	OXY USA INC.	1	8,400	1992-02-26