HOELSCHER

Oil · District 10 · Lease #30708

Operator: COSTILLA PETROLEUM CORPORATION

Cum Oil

2k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 1998-03

Peak Month

1994-03

Production History

Cum Oil: 1,707 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

155 BBL/mo

Di (annual)

385.0%

b-factor

0.3

EUR

676 BBL

R-squared

0.327

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1GWR OPERATING CO.111,0501986-02-25
1 CGWR OPERATING CO.111,0501986-02-25
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