M.-MOCZYGEMBA M.-JONAS C SA

Oil · District 02 · Lease #11475

Operator: MARATHON OIL EF LLC

Cum Oil

344k BBL

Cum Gas

601k MCF

casinghead

Wells

1

Production

2017-09 — 2026-04

Peak Month

2018-12

Production History

Cum Oil: 343,840 BBL Cum Gas: 600,945 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

23,163 BBL/mo

Di (annual)

215.7%

b-factor

0.5

EUR

253,392 BBL

R-squared

0.884

type

hyperbolic

Operator History (from monthly production reports)

2017-09 — 2026-07 MARATHON OIL EF LLC 107 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC119,6902017-06-13