HIERHOLZER SEEWALD UNIT

Oil · District 1 · Lease #15599

Operator: MARATHON OIL EF LLC

Cum Oil

189k BBL

Cum Gas

0 MCF

Wells

1

Production

2011-05 — 2026-03

Peak Month

2011-06

Production History

Cum Oil: 188,942 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

5,987 BBL/mo

Di (annual)

60.6%

b-factor

0.4

EUR

193,573 BBL

R-squared

0.671

type

hyperbolic

Wells (1)

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