GIESE UNIT

Oil · District 01 · Lease #15848

Operator: MARATHON OIL EF LLC

Cum Oil

814k BBL

Cum Gas

809k MCF

casinghead

Wells

5

Production

2012-03 — 2026-04

Peak Month

2020-05

Production History

Cum Oil: 814,030 BBL Cum Gas: 808,992 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

51,733 BBL/mo

Di (annual)

347.4%

b-factor

1.0

EUR

923,809 BBL

R-squared

0.950

type

hyperbolic

Operator History (from monthly production reports)

2012-03 — 2026-07 MARATHON OIL EF LLC 173 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC120,0002018-12-31
3HMARATHON OIL EF LLC120,0002018-12-31
4HMARATHON OIL EF LLC120,0002018-12-31
5HMARATHON OIL EF LLC120,0002018-12-31
1HMARATHON OIL EF LLC113,5002011-11-01