GUAJILLO UNIT 16 NORTH

Oil · District 01 · Lease #19500

Operator: MARATHON OIL EF LLC

Cum Oil

1.2M BBL

Cum Gas

1.5M MCF

casinghead

Wells

4

Production

2018-10 — 2026-04

Peak Month

2019-04

Production History

Cum Oil: 1,232,572 BBL Cum Gas: 1,503,387 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

98,491 BBL/mo

Di (annual)

179.0%

b-factor

0.4

EUR

1,096,672 BBL

R-squared

0.707

type

hyperbolic

Operator History (from monthly production reports)

2018-10 — 2026-07 MARATHON OIL EF LLC 94 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HMARATHON OIL EF LLC219,4002017-05-08
3HMARATHON OIL EF LLC219,4002017-05-08
4HMARATHON OIL EF LLC219,4002017-05-08
1HMARATHON OIL EF LLC119,4002017-05-05