R. MAY B-GUAJILLO UNIT

Oil · District 01 · Lease #17935

Operator: MARATHON OIL EF LLC

Cum Oil

318k BBL

Cum Gas

374k MCF

casinghead

Wells

1

Production

2014-06 — 2026-04

Peak Month

2014-07

Production History

Cum Oil: 317,526 BBL Cum Gas: 373,719 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

20,055 BBL/mo

Di (annual)

204.6%

b-factor

0.7

EUR

329,881 BBL

R-squared

0.928

type

hyperbolic

Operator History (from monthly production reports)

2014-06 — 2026-07 MARATHON OIL EF LLC 146 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC120,1002014-02-12