PFEIFER UNIT

Oil · District 2 · Lease #9817

Operator: MARATHON OIL EF LLC

Cum Oil

683k BBL

Cum Gas

0 MCF

Wells

4

Production

2011-04 — 2026-03

Peak Month

2013-05

Production History

Cum Oil: 682,524 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

28,113 BBL/mo

Di (annual)

135.0%

b-factor

0.6

EUR

572,725 BBL

R-squared

0.903

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HMARATHON OIL EF LLC115,5002012-11-08
3HMARATHON OIL EF LLC115,0002012-09-13
2HMARATHON OIL EF LLC115,0002012-07-26
1HHILCORP ENERGY COMPANY113,5002011-06-08
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