TAYLOR-MASSENGALE ALLOCATION A

Oil · District 02 · Lease #10917

Operator: MARATHON OIL EF LLC

Cum Oil

196k BBL

Cum Gas

402k MCF

casinghead

Wells

1

Production

2014-09 — 2026-01

Peak Month

2014-10

Production History

Cum Oil: 196,250 BBL Cum Gas: 401,707 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

22,206 BBL/mo

Di (annual)

265.7%

b-factor

0.5

EUR

198,017 BBL

R-squared

0.935

type

hyperbolic

Operator History (from monthly production reports)

2014-09 — 2026-07 MARATHON OIL EF LLC 143 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC216,5002014-06-28