CHAPMAN

Oil · District 08 · Lease #37222

Operator: WHITING OIL AND GAS CORPORATION

Cum Oil

103k BBL

Cum Gas

69k MCF

casinghead

Wells

2

Production

2003-12 — 2006-05

Peak Month

2004-02

Production History

Cum Oil: 103,019 BBL Cum Gas: 68,726 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,933 BBL/mo

Di (annual)

62.9%

b-factor

0.2

EUR

141,400 BBL

R-squared

0.855

type

hyperbolic

Operator History (from monthly production reports)

2005-06 — 2006-08 WHITING OIL AND GAS CORPORATION 15 mo
2003-12 — 2005-05 PARTEE DRILLING INC. 18 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1APEX RESOURCES LLC16,0002003-05-23
2APEX RESOURCES LLC16,0002003-05-23