BLACK JACK SPRINGS UNIT

Oil · District 03 · Lease #26087

Operator: SOUTHERN BAY OPERATING, L.L.C.

Fields: SOUTHERN BAY (EAGLE FORD)

Cum Oil

87k BBL

Cum Gas

16k MCF

casinghead

Wells

1

Production

2011-07 — 2026-04

Peak Month

2011-08

Production History

Cum Oil: 86,782 BBL Cum Gas: 16,112 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,480 BBL/mo

Di (annual)

212.5%

b-factor

0.9

EUR

78,328 BBL

R-squared

0.752

type

hyperbolic

Operator History (from monthly production reports)

2026-01 — 2026-07 FW EAGLE FORD I, LLC 7 mo

2024-01 — 2025-12 BAYTEX ENERGY USA, INC. 24 mo

2022-12 — 2023-12 ROCC OIL & GAS, L.P. 13 mo

2022-04 — 2022-11 PENN VIRGINIA OIL & GAS, L.P. 8 mo

2021-01 — 2022-03 FLATONIA ENERGY, LLC 15 mo

2015-07 — 2020-12 EARTHSTONE OPERATING, LLC 66 mo

2013-07 — 2015-06 OAK VALLEY OPERATING, LLC 24 mo

2011-07 — 2013-06 SOUTHERN BAY OPERATING, L.L.C. 24 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1H	42-149-33224	FW EAGLE FORD I, LLC	1	17,200	2011-03-21