ARNOLD

Oil · District 11 · Lease #68937

Operator: CHISHOLM OPERATING, INC.

Cum Oil

121k BBL

Cum Gas

0 MCF

Wells

4

Production

2006-05 — 2010-11

Peak Month

2007-03

Production History

Cum Oil: 120,574 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

6,332 BBL/mo

Di (annual)

432.5%

b-factor

1.5

EUR

206,722 BBL

R-squared

0.955

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4CHISHOLM OPERATING, INC.15,2002006-09-22
3CHISHOLM OPERATING, INC.15,3002006-06-23
2CHISHOLM OPERATING, INC.15,5002006-05-18
1CHISHOLM OPERATING, INC.15,4002006-02-13
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