MCS FOUNDATION-TOM FAMILY USW A

Oil · District 01 · Lease #21800

Operator: MARATHON OIL EF LLC

Cum Oil

131k BBL

Cum Gas

135k MCF

casinghead

Wells

1

Production

2025-07 — 2026-04

Peak Month

2025-08

Production History

Cum Oil: 131,299 BBL Cum Gas: 135,344 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

21,139 BBL/mo

Di (annual)

167.9%

b-factor

0.0

EUR

151,335 BBL

R-squared

0.953

type

exponential

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MARATHON OIL EF LLC217,5002025-01-23