RIPPSTEIN-MIKKELSON UNIT

Oil · District 02 · Lease #9815

Operator: MARATHON OIL EF LLC

Cum Oil

1.8M BBL

Cum Gas

2.6M MCF

casinghead

Wells

6

Production

2011-09 — 2026-04

Peak Month

2020-01

Production History

Cum Oil: 1,793,323 BBL Cum Gas: 2,625,887 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

74,179 BBL/mo

Di (annual)

175.3%

b-factor

0.5

EUR

993,916 BBL

R-squared

0.877

type

hyperbolic

Operator History (from monthly production reports)

2011-11 — 2026-07 MARATHON OIL EF LLC 177 mo
2011-09 — 2011-10 HILCORP ENERGY COMPANY 2 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HMARATHON OIL EF LLC122,0002019-08-26
2HMARATHON OIL EF LLC122,0002019-08-23
3HMARATHON OIL EF LLC117,8002013-10-16
5HMARATHON OIL EF LLC118,0002013-10-16
4HMARATHON OIL EF LLC114,5002012-05-18
1HMARATHON OIL EF LLC113,5002011-06-27