O'BRIEN A

Oil · District 10 · Lease #37571

Operator: ROFF OPERATING COMPANY, LLC

Cum Oil

21k BBL

Cum Gas

0 MCF

Wells

1

Production

2005-04 — 2011-07

Peak Month

2006-04

Production History

Cum Oil: 20,507 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

376 BBL/mo

Di (annual)

13.6%

b-factor

0.0

EUR

33,194 BBL

R-squared

0.559

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ROFF OPERATING COMPANY, LLC19,0002004-12-29
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