74-ATASCOSA SA 3

Oil · District 01 · Lease #20396

Operator: MARATHON OIL EF LLC

Cum Oil

253k BBL

Cum Gas

373k MCF

casinghead

Wells

1

Production

2021-03 — 2025-09

Peak Month

2021-08

Production History

Cum Oil: 252,639 BBL Cum Gas: 373,123 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

28,472 BBL/mo

Di (annual)

480.3%

b-factor

1.0

EUR

391,147 BBL

R-squared

0.984

type

hyperbolic

Operator History (from monthly production reports)

2021-03 — 2026-01 MARATHON OIL EF LLC 59 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HMARATHON OIL EF LLC122,0002021-01-15