GUAJILLO UNIT 8 NORTH

Oil · District 01 · Lease #19403

Operator: MARATHON OIL EF LLC

Cum Oil

1.1M BBL

Cum Gas

1.5M MCF

casinghead

Wells

5

Production

2018-03 — 2026-04

Peak Month

2018-09

Production History

Cum Oil: 1,140,610 BBL Cum Gas: 1,512,020 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

110,550 BBL/mo

Di (annual)

455.9%

b-factor

0.9

EUR

1,303,569 BBL

R-squared

0.869

type

hyperbolic

Operator History (from monthly production reports)

2018-03 — 2026-07 MARATHON OIL EF LLC 101 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC122,0002017-11-03
5HMARATHON OIL EF LLC122,0002017-11-03
2HMARATHON OIL EF LLC222,0002017-11-01
3HMARATHON OIL EF LLC222,0002017-11-01
4HMARATHON OIL EF LLC222,0002017-11-01