MAUCH-HENKE UNIT

Oil · District 01 · Lease #16427

Operator: MARATHON OIL EF LLC

Cum Oil

124k BBL

Cum Gas

114k MCF

casinghead

Wells

1

Production

2012-10 — 2026-04

Peak Month

2012-11

Production History

Cum Oil: 123,924 BBL Cum Gas: 114,327 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,343 BBL/mo

Di (annual)

106.3%

b-factor

0.5

EUR

116,239 BBL

R-squared

0.747

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 LLC115,0002012-08-14