TXL -C-

Oil · District 08 · Lease #2640

Operator: MARATHON OIL COMPANY

Fields: HERRELL

Cum Oil

88k BBL

Cum Gas

42 MCF

casinghead

Wells

3

Production

1993-01 — 2026-03

Peak Month

1996-05

Production History

Cum Oil: 87,525 BBL Cum Gas: 42 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

428 BBL/mo

Di (annual)

6.8%

b-factor

0.4

EUR

91,450 BBL

R-squared

0.613

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
1993-01 — 2009-05 MARATHON OIL COMPANY 197 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
22BLACK RIVER OPERATING LLC25,1001996-02-14
9BLACK RIVER OPERATING LLC11,6001994-07-05
10 L42-431-10054BLACK RIVER OPERATING LLC------