COOPER 435

Oil · District 14 · Lease #7883

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

196k BBL

Cum Gas

0 MCF

Wells

4

Production

2008-07 — 2023-07

Peak Month

2009-01

Production History

Cum Oil: 195,761 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,247 BBL/mo

Di (annual)

34.4%

b-factor

0.0

EUR

182,876 BBL

R-squared

0.874

type

exponential

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HEOG RESOURCES, INC.19,0002009-01-29
3VHEOG RESOURCES, INC.19,0002008-06-25
2HEOG RESOURCES, INC.19,0002008-04-04
1HEOG RESOURCES, INC.19,0002008-03-19
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