COOPER 436

Oil · District 14 · Lease #7515

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

220k BBL

Cum Gas

0 MCF

Wells

4

Production

2004-04 — 2026-03

Peak Month

2009-10

Production History

Cum Oil: 220,382 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

12,953 BBL/mo

Di (annual)

139.0%

b-factor

0.4

EUR

185,358 BBL

R-squared

0.843

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HEOG RESOURCES, INC.19,0002009-01-21
3HEOG RESOURCES, INC.19,0002008-04-04
2HEOG RESOURCES, INC.19,0002007-08-10
1EOG RESOURCES, INC.28,6502003-12-16
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