CHALK, G. O. "A"

Oil · District 10 · Lease #18987

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

76k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2012-04

Peak Month

1996-01

Production History

Cum Oil: 76,248 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

616 BBL/mo

Di (annual)

22.9%

b-factor

1.7

EUR

113,778 BBL

R-squared

0.634

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11CONTINENTAL OIL COMPANY13,1501977-09-06
1042-227-31070--------
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