PFEIFER-PFEIFER BELL SA

Oil · District 02 · Lease #12651

Operator: MARATHON OIL EF LLC

Cum Oil

392k BBL

Cum Gas

921k MCF

casinghead

Wells

1

Production

2023-04 — 2026-04

Peak Month

2023-05

Production History

Cum Oil: 391,557 BBL Cum Gas: 920,646 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

45,715 BBL/mo

Di (annual)

669.8%

b-factor

1.3

EUR

839,133 BBL

R-squared

0.931

type

hyperbolic

Operator History (from monthly production reports)

2023-04 — 2026-07 MARATHON OIL EF LLC 40 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC226,0002022-12-27