BARNHART (EF)-HFS SA8

Oil · District 02 · Lease #13135

Operator: MARATHON OIL EF LLC

Cum Oil

76k BBL

Cum Gas

41k MCF

casinghead

Wells

1

Production

2025-05 — 2026-04

Peak Month

2025-10

Production History

Cum Oil: 75,685 BBL Cum Gas: 40,599 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

12,170 BBL/mo

Di (annual)

64.6%

b-factor

0.2

EUR

282,637 BBL

R-squared

0.325

type

hyperbolic

Operator History (from monthly production reports)

2025-05 — 2026-07 MARATHON OIL EF LLC 15 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
137HMARATHON OIL EF LLC122,0002024-12-04