GUAJILLO UNIT 13 SOUTH

Oil · District 01 · Lease #20460

Operator: MARATHON OIL EF LLC

Cum Oil

749k BBL

Cum Gas

1.0M MCF

casinghead

Wells

4

Production

2021-07 — 2026-04

Peak Month

2021-12

Production History

Cum Oil: 748,504 BBL Cum Gas: 1,022,873 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

91,976 BBL/mo

Di (annual)

631.9%

b-factor

1.1

EUR

1,231,118 BBL

R-squared

0.939

type

hyperbolic

Operator History (from monthly production reports)

2021-07 — 2026-07 MARATHON OIL EF LLC 61 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC122,0002021-05-14
2HMARATHON OIL EF LLC122,0002021-05-14
3HMARATHON OIL EF LLC122,0002021-05-14
4HMARATHON OIL EF LLC122,0002021-05-14