OLDHAM -A-

Oil · District 10 · Lease #28734

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

18k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2002-03

Peak Month

1993-02

Production History

Cum Oil: 17,657 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

418 BBL/mo

Di (annual)

21.7%

b-factor

0.0

EUR

23,068 BBL

R-squared

0.436

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PARKER & PARSLEY, INC.19,1001984-01-12
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