BARNHART (EF)-H UNIT SA

Oil · District 01 · Lease #21155

Operator: MARATHON OIL EF LLC

Cum Oil

142k BBL

Cum Gas

188k MCF

casinghead

Wells

1

Production

2023-08 — 2026-03

Peak Month

2023-09

Production History

Cum Oil: 141,701 BBL Cum Gas: 188,203 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

18,712 BBL/mo

Di (annual)

195.5%

b-factor

0.1

EUR

127,871 BBL

R-squared

0.907

type

hyperbolic

Operator History (from monthly production reports)

2023-08 — 2026-07 MARATHON OIL EF LLC 36 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
52HMARATHON OIL EF LLC126,0002023-04-18