FORISTER-541 UNIT A

Oil · District 02 · Lease #9881

Operator: MARATHON OIL EF LLC

Cum Oil

1.4M BBL

Cum Gas

2.0M MCF

casinghead

Wells

6

Production

2011-12 — 2026-04

Peak Month

2020-03

Production History

Cum Oil: 1,368,763 BBL Cum Gas: 1,969,772 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

107,767 BBL/mo

Di (annual)

449.5%

b-factor

1.0

EUR

1,562,469 BBL

R-squared

0.941

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC122,0002019-08-12
3HMARATHON OIL EF LLC122,0002019-08-12
4HMARATHON OIL EF LLC122,0002019-08-12
5HMARATHON OIL EF LLC122,0002019-08-12
6HMARATHON OIL EF LLC122,0002019-08-12
1HMARATHON OIL EF LLC113,5002011-09-27