MURPHY-SINCLAIR UNIT

Oil · District 02 · Lease #11140

Operator: MARATHON OIL EF LLC

Cum Oil

258k BBL

Cum Gas

879k MCF

casinghead

Wells

5

Production

2015-05 — 2026-04

Peak Month

2015-07

Production History

Cum Oil: 258,172 BBL Cum Gas: 878,951 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

26,029 BBL/mo

Di (annual)

441.7%

b-factor

0.7

EUR

209,400 BBL

R-squared

0.917

type

hyperbolic

Operator History (from monthly production reports)

2015-05 — 2026-07 MARATHON OIL EF LLC 135 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HMARATHON OIL EF LLC124,0002021-11-17
502HMARATHON OIL EF LLC120,0002015-07-08
302HMARATHON OIL EF LLC120,0002015-07-01
503HMARATHON OIL EF LLC120,0002015-07-01
6HRMARATHON OIL EF LLC319,5002014-10-16