YOSKO BORGFELD UNIT

Oil · District 02 · Lease #9793

Operator: MARATHON OIL EF LLC

Cum Oil

1.1M BBL

Cum Gas

2.2M MCF

casinghead

Wells

4

Production

2011-08 — 2026-04

Peak Month

2021-05

Production History

Cum Oil: 1,134,815 BBL Cum Gas: 2,204,386 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

113,871 BBL/mo

Di (annual)

578.0%

b-factor

0.9

EUR

1,094,763 BBL

R-squared

0.959

type

hyperbolic

Operator History (from monthly production reports)

2011-11 — 2026-07 MARATHON OIL EF LLC 177 mo
2011-08 — 2011-10 HILCORP ENERGY COMPANY 3 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC222,0002020-04-03
3HMARATHON OIL EF LLC222,0002020-04-03
501HMARATHON OIL EF LLC222,0002020-04-03
1HMARATHON OIL EF LLC113,5002011-06-30