COOPER 445

Oil · District 14 · Lease #7900

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

240k BBL

Cum Gas

0 MCF

Wells

4

Production

2008-06 — 2026-03

Peak Month

2009-03

Production History

Cum Oil: 239,838 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

6,010 BBL/mo

Di (annual)

81.2%

b-factor

0.6

EUR

196,333 BBL

R-squared

0.931

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HEOG RESOURCES, INC.19,0002009-01-21
3HEOG RESOURCES, INC.19,0002008-05-28
2HEOG RESOURCES, INC.19,0002008-04-14
1HEOG RESOURCES, INC.19,0002008-03-13
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