HAMLIN-L-

Oil · District 10 · Lease #35287

Operator: COSTILLA ENERGY, INC.

Cum Oil

29k BBL

Cum Gas

0 MCF

Wells

1

Production

1997-02 — 1999-04

Peak Month

1997-03

Production History

Cum Oil: 29,412 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,112 BBL/mo

Di (annual)

238.1%

b-factor

0.0

EUR

25,849 BBL

R-squared

0.836

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1701COSTILLA ENERGY, INC.19,0001997-01-15
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