CHALK, G. O. -C-

Oil · District 10 · Lease #2687

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

55k BBL

Cum Gas

0 MCF

Wells

15

Production

1993-01 — 2012-03

Peak Month

1993-01

Production History

Cum Oil: 55,277 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

949 BBL/mo

Di (annual)

37.7%

b-factor

0.6

EUR

61,421 BBL

R-squared

0.727

type

hyperbolic

Wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
23CONOCO INC.23,2501980-08-28
23WCONOCO INC.23,2501980-08-28
11W42-227-10062--------
12W42-227-10063--------
13W42-227-10064--------
15W42-227-10067--------
1642-227-10066--------
1742-227-30003--------
1842-227-30002--------
19WS42-227-30297--------
242-227-02516--------
2242-227-30842--------
4W42-227-02421--------
642-227-00511--------
7W42-227-00505--------
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