WEST RANCH "A"

Oil · District 2 · Lease #7592

Operator: VINTAGE PETROLEUM, INC.

Cum Oil

1k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2004-09

Peak Month

1999-12

Production History

Cum Oil: 1,393 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

160 BBL/mo

Di (annual)

138.1%

b-factor

0.0

EUR

1,383 BBL

R-squared

0.370

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
413VINTAGE PETROLEUM, INC.56,4992004-03-04
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