WHITSETT-MASSENGALE UNIT

Oil · District 02 · Lease #10480

Operator: MARATHON OIL EF LLC

Cum Oil

74k BBL

Cum Gas

149k MCF

casinghead

Wells

1

Production

2013-04 — 2016-03

Peak Month

2013-05

Production History

Cum Oil: 74,255 BBL Cum Gas: 148,552 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,677 BBL/mo

Di (annual)

458.7%

b-factor

0.4

EUR

37,946 BBL

R-squared

0.394

type

hyperbolic

Operator History (from monthly production reports)

2013-04 — 2026-07 MARATHON OIL EF LLC 160 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC219,2002012-11-12