GRESHAM "A"

Oil · District 5 · Lease #3119

Operator: SONAT EXPLORATION COMPANY -TYLER

Cum Oil

32 BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 1998-08

Peak Month

1993-01

Production History

Cum Oil: 32 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

13 BBL/mo

Di (annual)

102.8%

b-factor

0.0

EUR

140 BBL

R-squared

0.894

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2MARSHALL EXPL. INC.110,0001987-04-23
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