O'BRIEN A

Oil · District 08 · Lease #37571

Operator: ROFF OPERATING COMPANY, LLC

Cum Oil

21k BBL

Cum Gas

32k MCF

casinghead

Wells

1

Production

2005-04 — 2011-04

Peak Month

2005-05

Production History

Cum Oil: 20,507 BBL Cum Gas: 32,302 MCF

RRC production reported through Apr 2026 · recent months incomplete

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

Operator History (from monthly production reports)

2005-04 — 2011-07 ROFF OPERATING COMPANY, LLC 76 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1OVINTIV USA INC.19,0002004-12-29