DEATLEY HOLLUB MAY SA 4

Oil · District 01 · Lease #20048

Operator: MARATHON OIL EF LLC

Cum Oil

293k BBL

Cum Gas

457k MCF

casinghead

Wells

1

Production

2020-03 — 2026-04

Peak Month

2020-09

Production History

Cum Oil: 292,652 BBL Cum Gas: 456,653 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,741 BBL/mo

Di (annual)

38.3%

b-factor

0.0

EUR

242,493 BBL

R-squared

0.339

type

exponential

Operator History (from monthly production reports)

2020-03 — 2026-07 MARATHON OIL EF LLC 77 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HMARATHON OIL EF LLC123,0002020-01-03