BLALOCK/ZANT

Oil · District 08 · Lease #33779

Operator: VANGUARD PERMIAN, LLC

Fields: BLALOCK (WOLFCAMP)

Cum Oil

208k BBL

Cum Gas

867k MCF

casinghead

Wells

1

Production

1993-04 — 2019-05

Peak Month

1993-05

Production History

Cum Oil: 207,813 BBL Cum Gas: 867,332 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,700 BBL/mo

Di (annual)

47.8%

b-factor

0.2

EUR

178,645 BBL

R-squared

0.921

type

hyperbolic

Operator History (from monthly production reports)

2017-07 — 2020-01 OXY USA INC. 31 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

1993-04 — 1998-03 TREND EXPLORATION COMPANY 60 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-173-32302	OXY USA INC.	2	11,500	1993-03-05