DAVENPORT-BROWN DUPNIK B SA

Oil · District 02 · Lease #12273

Operator: MARATHON OIL EF LLC

Cum Oil

226k BBL

Cum Gas

452k MCF

casinghead

Wells

1

Production

2021-12 — 2026-04

Peak Month

2022-03

Production History

Cum Oil: 226,485 BBL Cum Gas: 451,779 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

46,866 BBL/mo

Di (annual)

385.1%

b-factor

0.4

EUR

244,292 BBL

R-squared

0.900

type

hyperbolic

Operator History (from monthly production reports)

2021-12 — 2026-07 MARATHON OIL EF LLC 56 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC122,0002021-09-21