CHALLENGER UNIT A

Oil · District 2 · Lease #10519

Operator: MARATHON OIL EF LLC

Cum Oil

2.9M BBL

Cum Gas

0 MCF

Wells

11

Production

2012-02 — 2026-03

Peak Month

2014-07

Production History

Cum Oil: 2,921,133 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

41,710 BBL/mo

Di (annual)

31.4%

b-factor

0.3

EUR

2,240,018 BBL

R-squared

0.520

type

hyperbolic

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11HMARATHON OIL EF LLC118,1002014-03-17
10HMARATHON OIL EF LLC118,0002014-03-15
7HMARATHON OIL EF LLC118,0002014-03-15
8HMARATHON OIL EF LLC118,1002014-03-15
9HMARATHON OIL EF LLC118,1002014-03-15
3HMARATHON OIL EF LLC118,3002013-10-25
4HMARATHON OIL EF LLC117,7002013-10-25
5HMARATHON OIL EF LLC117,0002013-10-25
6HMARATHON OIL EF LLC117,1002013-10-25
2HMARATHON OIL EF LLC217,0002013-08-09
1HMARATHON OIL EF LLC117,0002013-01-24
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