TURNBULL A-D-E-R. GRANDE SA4

Oil · District 02 · Lease #12692

Operator: MARATHON OIL EF LLC

Cum Oil

191k BBL

Cum Gas

405k MCF

casinghead

Wells

1

Production

2023-09 — 2026-04

Peak Month

2024-03

Production History

Cum Oil: 190,818 BBL Cum Gas: 404,739 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

35,151 BBL/mo

Di (annual)

356.2%

b-factor

0.4

EUR

197,862 BBL

R-squared

0.944

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HMARATHON OIL EF LLC124,0002023-05-30