HIERHOLZER RETZLOFF UNIT

Oil · District 1 · Lease #15621

Operator: MARATHON OIL EF LLC

Cum Oil

194k BBL

Cum Gas

0 MCF

Wells

1

Production

2011-05 — 2026-03

Peak Month

2011-06

Production History

Cum Oil: 194,118 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

7,327 BBL/mo

Di (annual)

62.5%

b-factor

0.3

EUR

200,201 BBL

R-squared

0.781

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HHILCORP ENERGY COMPANY113,5002011-02-17
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