DEATLEY GRIFFIN MAY SA5

Oil · District 01 · Lease #21213

Operator: MARATHON OIL EF LLC

Cum Oil

220k BBL

Cum Gas

289k MCF

casinghead

Wells

1

Production

2023-09 — 2026-04

Peak Month

2024-03

Production History

Cum Oil: 220,420 BBL Cum Gas: 289,475 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

25,981 BBL/mo

Di (annual)

542.4%

b-factor

1.0

EUR

323,248 BBL

R-squared

0.837

type

hyperbolic

Operator History (from monthly production reports)

2023-09 — 2026-07 MARATHON OIL EF LLC 35 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5HMARATHON OIL EF LLC122,0002023-09-05