GUAJILLO UNIT 8 SOUTH

Oil · District 01 · Lease #19278

Operator: MARATHON OIL EF LLC

Cum Oil

1.5M BBL

Cum Gas

3.0M MCF

casinghead

Wells

5

Production

2017-12 — 2026-04

Peak Month

2018-01

Production History

Cum Oil: 1,498,100 BBL Cum Gas: 2,950,245 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

193,452 BBL/mo

Di (annual)

403.8%

b-factor

0.7

EUR

1,692,748 BBL

R-squared

0.991

type

hyperbolic

Operator History (from monthly production reports)

2017-12 — 2026-07 MARATHON OIL EF LLC 104 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC218,5002016-11-08
2HMARATHON OIL EF LLC218,5002016-11-08
3HMARATHON OIL EF LLC218,5002016-11-08
4HMARATHON OIL EF LLC218,5002016-11-08
5HMARATHON OIL EF LLC218,5002016-11-08