KEYSTONE -4-

Oil · District 08 · Lease #29169

Operator: WHITING OIL AND GAS CORPORATION

Fields: KEYSTONE (SILURIAN)

Cum Oil

118k BBL

Cum Gas

197k MCF

casinghead

Wells

1

Production

1993-01 — 2019-02

Peak Month

2011-05

Production History

Cum Oil: 118,044 BBL Cum Gas: 197,292 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

583 BBL/mo

Di (annual)

12.2%

b-factor

0.0

EUR

57,395 BBL

R-squared

0.503

type

exponential

Operator History (from monthly production reports)

2004-10 — 2019-08 WHITING OIL AND GAS CORPORATION 179 mo

2002-06 — 2004-09 CROWNQUEST OPERATING, LLC 28 mo

2001-01 — 2002-05 BURLINGTON RES O&G CO-PERMIAN 17 mo

1996-08 — 2000-12 BURLINGTON RESOURCES OIL&GAS CO. 53 mo

1996-03 — 1996-07 MERIDIAN OIL INC. 5 mo

1993-01 — 1996-02 SOUTHLAND ROYALTY COMPANY 38 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-495-31759	BCP RESOURCES, LLC	1	9,000	1984-05-07