CHALK, G. O. -E-

Oil · District 10 · Lease #2689

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

195k BBL

Cum Gas

0 MCF

Wells

19

Production

1993-01 — 2012-04

Peak Month

1993-06

Production History

Cum Oil: 195,415 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,149 BBL/mo

Di (annual)

5.6%

b-factor

0.0

EUR

230,562 BBL

R-squared

0.363

type

exponential

Wells (19)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
26CONOCO INC.13,3001989-05-02
28CONOCO INC.13,3001989-05-02
29CONOCO INC.13,3001989-05-02
25CONOCO INC.12,1251988-06-27
24CONOCO INC.23,2501988-04-26
7CONOCO INC.23,2151984-03-14
22CONOCO INC.23,9501983-03-07
20CONOCO INC.23,2501980-09-10
142-227-02420--------
12W42-227-10076--------
13W42-227-10077--------
14W42-227-10078--------
1542-227-10934--------
1642-227-10931--------
1842-227-30843--------
242-227-02521--------
342-227-02167--------
542-227-02519--------
642-227-00509--------
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