YOSKO BORGFELD-YOSKO UNIT SA

Oil · District 02 · Lease #12081

Operator: MARATHON OIL EF LLC

Cum Oil

386k BBL

Cum Gas

703k MCF

casinghead

Wells

1

Production

2020-07 — 2026-04

Peak Month

2021-05

Production History

Cum Oil: 386,267 BBL Cum Gas: 702,750 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

13,525 BBL/mo

Di (annual)

51.1%

b-factor

0.0

EUR

317,486 BBL

R-squared

0.496

type

exponential

Operator History (from monthly production reports)

2020-07 — 2026-07 MARATHON OIL EF LLC 73 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC222,0002020-04-06