SPRENCEL-PECK UNIT

Oil · District 2 · Lease #9900

Operator: MARATHON OIL EF LLC

Cum Oil

1.4M BBL

Cum Gas

0 MCF

Wells

7

Production

2012-01 — 2026-03

Peak Month

2014-05

Production History

Cum Oil: 1,433,442 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

53,209 BBL/mo

Di (annual)

145.3%

b-factor

0.8

EUR

1,404,998 BBL

R-squared

0.880

type

hyperbolic

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HMARATHON OIL EF LLC117,0002014-05-03
7HMARATHON OIL EF LLC117,0002014-05-03
5HMARATHON OIL EF LLC118,5002014-01-08
4HMARATHON OIL EF LLC118,2002014-01-03
3HMARATHON OIL EF LLC117,6002014-01-02
2HMARATHON OIL EF LLC117,6002013-12-27
1HHILCORP ENERGY COMPANY113,5002011-10-31
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