LARUE-MARK INVESTMENTS UNIT

Oil · District 3 · Lease #21221

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

19k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2005-09

Peak Month

1993-12

Production History

Cum Oil: 18,729 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,019 BBL/mo

Di (annual)

279.8%

b-factor

0.6

EUR

10,263 BBL

R-squared

0.689

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1UNION PACIFIC RESOURCES COMPANY311,0002005-01-26
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