NORTHERN RANCH

Oil · District 3 · Lease #25107

Operator: APACHE CORPORATION

Cum Oil

4k BBL

Cum Gas

0 MCF

Wells

1

Production

2008-01 — 2010-06

Peak Month

2008-01

Production History

Cum Oil: 4,421 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

363 BBL/mo

Di (annual)

89.4%

b-factor

0.0

EUR

4,867 BBL

R-squared

0.401

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11PENNZOIL EXPLORATION & PROD. CO.58,0002017-07-24
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