RETZLOFF-MAY UNIT

Oil · District 01 · Lease #15694

Operator: MARATHON OIL EF LLC

Cum Oil

147k BBL

Cum Gas

181k MCF

casinghead

Wells

1

Production

2011-10 — 2025-11

Peak Month

2011-11

Production History

Cum Oil: 146,921 BBL Cum Gas: 181,241 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,891 BBL/mo

Di (annual)

215.9%

b-factor

0.7

EUR

139,214 BBL

R-squared

0.817

type

hyperbolic

Operator History (from monthly production reports)

2011-11 — 2026-07 MARATHON OIL EF LLC 177 mo
2011-10 — 2011-10 HILCORP ENERGY COMPANY 1 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC113,5002011-08-17