FORISTER 541 UNIT B

Oil · District 02 · Lease #9879

Operator: MARATHON OIL EF LLC

Cum Oil

1.3M BBL

Cum Gas

1.9M MCF

casinghead

Wells

5

Production

2011-12 — 2026-04

Peak Month

2022-03

Production History

Cum Oil: 1,280,205 BBL Cum Gas: 1,896,414 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

155,705 BBL/mo

Di (annual)

892.4%

b-factor

1.1

EUR

1,593,555 BBL

R-squared

0.974

type

hyperbolic

Operator History (from monthly production reports)

2011-12 — 2026-07 MARATHON OIL EF LLC 176 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC122,0002021-04-30
3HMARATHON OIL EF LLC122,0002021-04-30
4HMARATHON OIL EF LLC122,0002021-04-30
5HMARATHON OIL EF LLC122,0002021-04-30
1HMARATHON OIL EF LLC113,5002011-10-18