BARNHART (EF) H UNIT SA3

Oil · District 01 · Lease #21670

Operator: MARATHON OIL EF LLC

Cum Oil

189k BBL

Cum Gas

133k MCF

casinghead

Wells

1

Production

2024-08 — 2026-04

Peak Month

2025-03

Production History

Cum Oil: 189,211 BBL Cum Gas: 133,246 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

25,840 BBL/mo

Di (annual)

253.2%

b-factor

0.6

EUR

289,655 BBL

R-squared

0.864

type

hyperbolic

Operator History (from monthly production reports)

2024-08 — 2026-07 MARATHON OIL EF LLC 24 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HMARATHON OIL EF LLC122,0002024-04-25