COOPER ESTATE

Oil · District 10 · Lease #35809

Operator: GREAT WESTERN DRILLING COMPANY

Cum Oil

518k BBL

Cum Gas

0 MCF

Wells

4

Production

1998-05 — 2026-03

Peak Month

2000-05

Production History

Cum Oil: 518,115 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

8,750 BBL/mo

Di (annual)

46.2%

b-factor

0.6

EUR

474,551 BBL

R-squared

0.953

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1AGREAT WESTERN DRLG. CO.16,5002000-04-11
2AGREAT WESTERN DRLG. CO.16,5001999-09-16
4AGREAT WESTERN DRLG. CO.16,5001999-09-16
3AGREAT WESTERN DRLG. CO.16,5001998-04-17
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