COLBY, E. H., ET AL

Oil · District 3 · Lease #10383

Operator: NORTH CENTRAL OIL CORP.

Cum Oil

35k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2003-02

Peak Month

1997-08

Production History

Cum Oil: 34,812 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

933 BBL/mo

Di (annual)

77.5%

b-factor

0.0

EUR

14,447 BBL

R-squared

0.541

type

exponential

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11NORTH CENTRAL OIL CORP.16,0122002-12-16
1CHEVRON U. S. A. INC.15,0001994-05-25
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