WITCHER, J. E. -7-

Oil · District 10 · Lease #1558

Operator: OCCIDENTAL PERMIAN LTD.

Fields: FOSTER

Cum Oil

513k BBL

Cum Gas

0 MCF

Wells

15

Production

1993-01 — 2026-03

Peak Month

2002-01

Production History

Cum Oil: 513,260 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

6,550 BBL/mo

Di (annual)

19.3%

b-factor

0.2

EUR

501,254 BBL

R-squared

0.848

type

hyperbolic

Wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
16OCCIDENTAL PERMIAN LTD.14,6002011-06-24
10OCCIDENTAL PERMIAN LTD.14,6002001-08-30
11OCCIDENTAL PERMIAN LTD.14,6002001-08-30
12OCCIDENTAL PERMIAN LTD.14,6002001-08-30
13OCCIDENTAL PERMIAN LTD.14,6002001-08-30
14OCCIDENTAL PERMIAN LTD.24,6002001-08-30
15OCCIDENTAL PERMIAN LTD.14,6002001-08-30
8OCCIDENTAL PERMIAN LTD.14,6002001-08-30
9OCCIDENTAL PERMIAN LTD.14,6002001-08-30
6KIRBY EXPLORATION CO. OF TEXAS14,2151987-05-12
142-135-06825--------
2W42-135-06823--------
4W42-135-06827--------
542-135-06828--------
C 2W42-135-08981--------
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