GFELLER "A"

Oil · District 13 · Lease #28987

Operator: MADISON OIL COMPANY

Cum Oil

40k BBL

Cum Gas

0 MCF

Wells

1

Production

1995-06 — 2008-03

Peak Month

1997-03

Production History

Cum Oil: 40,295 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,756 BBL/mo

Di (annual)

84.0%

b-factor

0.0

EUR

25,073 BBL

R-squared

0.947

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2MADISON OIL COMPANY15,0001995-03-07
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