HEADLEE DEVONIAN UNIT

Oil · District 10 · Lease #30921

Operator: FOUR STAR OIL AND GAS COMPANY

Cum Oil

30k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2009-02

Peak Month

1993-05

Production History

Cum Oil: 30,388 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

498 BBL/mo

Di (annual)

40.2%

b-factor

0.9

EUR

41,571 BBL

R-squared

0.678

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6701FOUR STAR OIL AND GAS COMPANY112,1802008-12-08
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