SWINK 391

Oil · District 14 · Lease #8041

Operator: HIGHMARK ENERGY OPERATING, LLC

Cum Oil

89k BBL

Cum Gas

0 MCF

Wells

1

Production

2009-08 — 2026-03

Peak Month

2009-08

Production History

Cum Oil: 89,046 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,142 BBL/mo

Di (annual)

71.4%

b-factor

0.4

EUR

86,518 BBL

R-squared

0.863

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HEOG RESOURCES, INC.29,0002009-05-21
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