L. FOSTER -5-

Oil · District 10 · Lease #25454

Operator: RANGE PRODUCTION COMPANY

Fields: CONGER (PENN)

Cum Oil

8k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2011-09

Peak Month

1998-10

Production History

Cum Oil: 8,014 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

602 BBL/mo

Di (annual)

441.0%

b-factor

1.0

EUR

8,861 BBL

R-squared

0.950

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5LOMAK PRODUCTION COMPANY18,1501998-07-28
1DORCHESTER EXPLORATION, INC.18,4001977-12-20
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