MCS FOUNDATION UNIT

Oil · District 01 · Lease #21791

Operator: MARATHON OIL EF LLC

Cum Oil

384k BBL

Cum Gas

413k MCF

casinghead

Wells

3

Production

2025-07 — 2026-04

Peak Month

2025-08

Production History

Cum Oil: 384,015 BBL Cum Gas: 413,120 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

82,635 BBL/mo

Di (annual)

600.7%

b-factor

1.2

EUR

1,380,782 BBL

R-squared

0.995

type

hyperbolic

Operator History (from monthly production reports)

2025-07 — 2026-07 MARATHON OIL EF LLC 13 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7HMARATHON OIL EF LLC117,5002025-01-23
8HMARATHON OIL EF LLC117,5002025-01-23
9HMARATHON OIL EF LLC117,5002025-01-23