GUAJILLO UNIT 9 NORTH

Oil · District 01 · Lease #18235

Operator: MARATHON OIL EF LLC

Cum Oil

1.2M BBL

Cum Gas

1.4M MCF

casinghead

Wells

4

Production

2014-10 — 2026-04

Peak Month

2015-02

Production History

Cum Oil: 1,247,783 BBL Cum Gas: 1,368,929 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

71,024 BBL/mo

Di (annual)

374.4%

b-factor

1.1

EUR

1,421,819 BBL

R-squared

0.861

type

hyperbolic

Operator History (from monthly production reports)

2014-10 — 2026-07 MARATHON OIL EF LLC 142 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
51HMARATHON OIL EF LLC119,0002014-09-09
53HMARATHON OIL EF LLC120,0002014-09-09
87HMARATHON OIL EF LLC119,5002014-09-09
49HMARATHON OIL EF LLC118,6002014-09-08