JOHNSON, J. L. -31-

Oil · District 10 · Lease #21835

Operator: GREAT WESTERN DRILLING COMPANY

Fields: FOSTER

Cum Oil

2.3M BBL

Cum Gas

0 MCF

Wells

29

Production

1993-01 — 2026-03

Peak Month

1993-07

Production History

Cum Oil: 2,278,083 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

8,131 BBL/mo

Di (annual)

2.5%

b-factor

0.0

EUR

2,800,461 BBL

R-squared

0.587

type

exponential

Wells (29)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
27GREAT WESTERN DRILLING COMPANY15,0002004-09-14
27WGREAT WESTERN DRILLING COMPANY15,0002004-09-14
26GREAT WESTERN DRLG. CO.15,0002004-08-23
25GREAT WESTERN DRLG. CO.14,7502000-11-10
25WGREAT WESTERN DRLG. CO.14,7502000-11-10
24GREAT WESTERN DRLG. CO.39,1002000-01-28
15RGREAT WESTERN DRLG. CO.14,5001997-11-12
22GREAT WESTERN DRLG. CO.14,4001984-08-21
21WGREAT WESTERN DRLG. CO.14,5001979-06-29
142-135-03904--------
1042-135-04094--------
10W42-135-04094--------
11W42-135-04095--------
1242-135-04096--------
13W42-135-04097--------
1442-135-04098--------
1542-135-30535--------
1642-135-30932--------
1742-135-30933--------
1842-135-31244--------
19W42-135-31245--------
242-135-04294--------
20W42-135-31739--------
342-135-04295--------
442-135-04296--------
542-135-04089--------
642-135-04090--------
742-135-04091--------
942-135-04093--------
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