KRUEGER-ZUNKER UNIT

Oil · District 01 · Lease #16366

Operator: MARATHON OIL EF LLC

Cum Oil

175k BBL

Cum Gas

194k MCF

casinghead

Wells

1

Production

2012-10 — 2026-02

Peak Month

2012-11

Production History

Cum Oil: 174,759 BBL Cum Gas: 194,387 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

15,866 BBL/mo

Di (annual)

228.7%

b-factor

0.6

EUR

196,115 BBL

R-squared

0.801

type

hyperbolic

Operator History (from monthly production reports)

2012-10 — 2026-07 MARATHON OIL EF LLC 166 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC114,5002012-08-28