O'BRIEN

Oil · District 10 · Lease #37572

Operator: ROFF OPERATING COMPANY, LLC

Cum Oil

76k BBL

Cum Gas

0 MCF

Wells

1

Production

2005-01 — 2011-07

Peak Month

2005-02

Production History

Cum Oil: 76,274 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,591 BBL/mo

Di (annual)

16.6%

b-factor

0.0

EUR

115,170 BBL

R-squared

0.911

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ROFF OPERATING COMPANY, LLC19,0002004-08-27
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