HOLLAND

Oil · District 11 · Lease #68993

Operator: GREAT WESTERN DRILLING COMPANY

Cum Oil

419k BBL

Cum Gas

0 MCF

Wells

4

Production

2006-07 — 2026-03

Peak Month

2007-06

Production History

Cum Oil: 418,732 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,127 BBL/mo

Di (annual)

57.5%

b-factor

1.4

EUR

506,810 BBL

R-squared

0.719

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
202GREAT WESTERN DRILLING COMPANY28,0002007-12-31
101GREAT WESTERN DRILLING COMPANY18,0002007-01-29
1GREAT WESTERN DRILLING COMPANY18,1002006-05-26
201GREAT WESTERN DRILLING COMPANY18,1002006-05-26
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