SHINER UNIT A

Oil · District 02 · Lease #10506

Operator: MARATHON OIL EF LLC

Cum Oil

80k BBL

Cum Gas

180k MCF

casinghead

Wells

1

Production

2013-04 — 2026-03

Peak Month

2013-04

Production History

Cum Oil: 79,596 BBL Cum Gas: 180,365 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,417 BBL/mo

Di (annual)

72.2%

b-factor

0.1

EUR

81,593 BBL

R-squared

0.714

type

hyperbolic

Operator History (from monthly production reports)

2013-04 — 2026-07 MARATHON OIL EF LLC 160 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HMARATHON OIL EF LLC117,2002013-01-08