HOLLAND-BROWN UNIT

Oil · District 02 · Lease #9827

Operator: MARATHON OIL EF LLC

Cum Oil

1.3M BBL

Cum Gas

2.3M MCF

casinghead

Wells

5

Production

2011-10 — 2026-04

Peak Month

2019-01

Production History

Cum Oil: 1,325,665 BBL Cum Gas: 2,272,588 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

136,149 BBL/mo

Di (annual)

366.3%

b-factor

0.7

EUR

1,304,985 BBL

R-squared

0.929

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 (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC219,5002018-04-06
3HMARATHON OIL EF LLC219,5002018-04-06
4HMARATHON OIL EF LLC219,5002018-04-06
5HMARATHON OIL EF LLC219,5002018-04-06
1HMARATHON OIL EF LLC113,5002011-04-08