BARNHART (EF) 2H UNIT

Oil · District 01 · Lease #20584

Operator: MARATHON OIL EF LLC

Cum Oil

513k BBL

Cum Gas

957k MCF

casinghead

Wells

4

Production

2010-07 — 2026-04

Peak Month

2022-10

Production History

Cum Oil: 512,966 BBL Cum Gas: 957,160 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

51,091 BBL/mo

Di (annual)

402.2%

b-factor

0.5

EUR

303,288 BBL

R-squared

0.861

type

hyperbolic

Operator History (from monthly production reports)

2020-04 — 2026-07 MARATHON OIL EF LLC 76 mo
2010-07 — 2011-10 HILCORP ENERGY COMPANY 16 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
57HMARATHON OIL EF LLC124,0002022-01-27
68HMARATHON OIL EF LLC124,0002022-01-27
2HMARATHON OIL EF LLC412,5002011-10-04
4HMARATHON OIL EF LLC213,5002010-12-14