COOPER 348

Oil · District 14 · Lease #7627

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

141k BBL

Cum Gas

0 MCF

Wells

4

Production

2006-01 — 2026-03

Peak Month

2007-01

Production History

Cum Oil: 140,799 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,156 BBL/mo

Di (annual)

107.0%

b-factor

0.5

EUR

111,559 BBL

R-squared

0.824

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HEOG RESOURCES, INC.19,0002007-02-26
4HEOG RESOURCES, INC.19,0002007-02-26
2HEOG RESOURCES, INC.19,0002006-08-07
1HEOG RESOURCES, INC.19,0002005-11-01
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