BERNSHAUSEN UNIT

Oil · District 03 · Lease #21405

Operator: STO OPERATING COMPANY

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

125k BBL

Cum Gas

467k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

2010-03

Production History

Cum Oil: 125,042 BBL Cum Gas: 466,623 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,748 BBL/mo

Di (annual)

129.2%

b-factor

0.5

EUR

31,513 BBL

R-squared

0.545

type

hyperbolic

Operator History (from monthly production reports)

2009-09 — 2026-07 LEEXUS OIL LLC 203 mo

2007-09 — 2009-08 STO OPERATING COMPANY 24 mo

2007-06 — 2007-08 LEEXUS OPERATING COMPANY 3 mo

2007-03 — 2007-05 LEEXUS OIL & GAS L.L.P. 3 mo

1993-01 — 2007-02 MARATHON OIL COMPANY 170 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-149-32487	LEEXUS OIL LLC	4	11,400	2009-11-13
1H	42-149-32487	LEEXUS OIL LLC	4	11,400	2009-11-13