CHAPMAN

Oil · District 10 · Lease #37222

Operator: WHITING OIL AND GAS CORPORATION

Cum Oil

103k BBL

Cum Gas

0 MCF

Wells

2

Production

2003-12 — 2006-08

Peak Month

2004-02

Production History

Cum Oil: 103,019 BBL Cum Gas: 0 MCF

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

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PARTEE DRILLING INC.16,0002003-05-23
2PARTEE DRILLING INC.16,0002003-05-23
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