COOPER 357

Oil · District 14 · Lease #7840

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

177k BBL

Cum Gas

0 MCF

Wells

2

Production

2008-02 — 2026-03

Peak Month

2009-01

Production History

Cum Oil: 177,118 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

6,383 BBL/mo

Di (annual)

74.3%

b-factor

0.4

EUR

169,146 BBL

R-squared

0.832

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HEOG RESOURCES, INC.19,0002008-10-04
1HEOG RESOURCES, INC.19,0002007-07-13
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