GLASS, J. L. ESTATE "B"

Oil · District 08 · Lease #34983

Operator: MARATHON OIL COMPANY

Fields: HERRELL

Cum Oil

55k BBL

Cum Gas

0 MCF

Wells

1

Production

1996-06 — 2026-03

Peak Month

1996-07

Production History

Cum Oil: 55,460 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,024 BBL/mo

Di (annual)

124.7%

b-factor

1.2

EUR

52,084 BBL

R-squared

0.462

type

hyperbolic

Operator History (from monthly production reports)

2020-01 — 2026-07 BLACK RIVER OPERATING LLC 79 mo
2009-06 — 2019-12 APACHE CORPORATION 127 mo
1996-06 — 2009-05 MARATHON OIL COMPANY 156 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4BLACK RIVER OPERATING LLC12,6001996-02-14