EARNEST "A"

Oil · District 8A · Lease #63897

Operator: SEI OPERATING, LLC

Fields: RK COMANCHE (FUSSELMAN)

Cum Oil

419k BBL

Cum Gas

23 MCF

casinghead

Wells

2

Production

1993-01 — 2026-03

Peak Month

1993-08

Production History

Cum Oil: 418,606 BBL Cum Gas: 23 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,629 BBL/mo

Di (annual)

7.2%

b-factor

0.0

EUR

424,662 BBL

R-squared

0.784

type

exponential

Operator History (from monthly production reports)

2016-06 — 2026-07 SEI OPERATING, LLC 122 mo

2010-04 — 2016-05 CROSSFOOT OPERATING, LLC 74 mo

2008-07 — 2010-03 BLUE RIDGE RESOURCES, LLC 21 mo

1993-01 — 2008-06 R K PETROLEUM CORP. 186 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-445-31069	SEI OPERATING, LLC	1	13,000	1982-06-22
1	42-445-31057	SEI OPERATING, LLC	1	13,000	1982-04-05