BARNHART (EF)-HFS SA1

Oil · District 02 · Lease #13128

Operator: MARATHON OIL EF LLC

Cum Oil

79k BBL

Cum Gas

42k MCF

casinghead

Wells

1

Production

2025-03 — 2026-04

Peak Month

2025-10

Production History

Cum Oil: 79,352 BBL Cum Gas: 42,164 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

20,922 BBL/mo

Di (annual)

482.0%

b-factor

0.0

EUR

52,788 BBL

R-squared

0.614

type

exponential

Operator History (from monthly production reports)

2025-03 — 2026-07 MARATHON OIL EF LLC 17 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
126HMARATHON OIL EF LLC122,0002024-12-09