VALENTINE

Oil · District 9 · Lease #12950

Operator: MARSHALL & WINSTON, INC.

Cum Oil

105k BBL

Cum Gas

0 MCF

Wells

3

Production

1993-01 — 2008-05

Peak Month

2002-04

Production History

Cum Oil: 105,144 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,259 BBL/mo

Di (annual)

53.3%

b-factor

0.0

EUR

50,879 BBL

R-squared

0.723

type

exponential

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4MARSHALL & WINSTON, INC.22,4001992-03-11
3MARSHALL & WINSTON, INC.22,4001991-02-13
2MARSHALL & WINSTON, INC.12,3001990-11-12
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