CULBERSON-PATTESON UNIT

Oil · District 2 · Lease #10315

Operator: MARATHON OIL EF LLC

Cum Oil

1.5M BBL

Cum Gas

0 MCF

Wells

7

Production

2012-07 — 2026-03

Peak Month

2017-04

Production History

Cum Oil: 1,457,955 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

60,541 BBL/mo

Di (annual)

421.6%

b-factor

1.1

EUR

1,106,808 BBL

R-squared

0.954

type

hyperbolic

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC219,2002015-12-14
501HMARATHON OIL EF LLC219,2002015-12-14
502HMARATHON OIL EF LLC219,2002015-11-18
301HMARATHON OIL EF LLC118,3002014-09-18
3HMARATHON OIL EF LLC118,3002014-09-06
5HMARATHON OIL EF LLC218,0002014-02-25
1HMARATHON OIL EF LLC215,0002012-06-13
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