RICHARD BUTLER UNIT A

Oil · District 2 · Lease #10141

Operator: MARATHON OIL EF LLC

Cum Oil

416k BBL

Cum Gas

0 MCF

Wells

4

Production

2012-07 — 2026-03

Peak Month

2012-09

Production History

Cum Oil: 416,271 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

7,617 BBL/mo

Di (annual)

268.6%

b-factor

1.2

EUR

227,307 BBL

R-squared

0.325

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HMARATHON OIL EF LLC113,5002012-05-22
3HMARATHON OIL EF LLC114,0002012-05-18
1HMARATHON OIL EF LLC114,0002012-04-17
2HMARATHON OIL EF LLC113,5002012-04-17
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