B.DUPNIK-V.FOEGELLE-F.541 B SA

Oil · District 02 · Lease #12600

Operator: MARATHON OIL EF LLC

Cum Oil

204k BBL

Cum Gas

399k MCF

casinghead

Wells

1

Production

2023-03 — 2026-04

Peak Month

2023-10

Production History

Cum Oil: 203,782 BBL Cum Gas: 399,072 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

34,783 BBL/mo

Di (annual)

372.3%

b-factor

0.4

EUR

187,412 BBL

R-squared

0.948

type

hyperbolic

Operator History (from monthly production reports)

2023-03 — 2026-07 MARATHON OIL EF LLC 41 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC126,0002023-01-24