DORA ROBERTS RANCH UNIT

Oil · District 10 · Lease #34019

Operator: OXY USA INC.

Cum Oil

53k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-11 — 1995-10

Peak Month

1994-04

Production History

Cum Oil: 53,137 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,062 BBL/mo

Di (annual)

819.9%

b-factor

1.4

EUR

95,550 BBL

R-squared

0.879

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4506OXY USA WTP LP413,3182007-02-10
4001OXY USA INC.113,3221994-04-04
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