DUSEK UNIT NO. 1

Oil · District 03 · Lease #22061

Operator: SOUTHWEST RESOURCES, INC.

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

217k BBL

Cum Gas

1.9M MCF

casinghead

Wells

2

Production

1993-05 — 2026-04

Peak Month

1993-06

Production History

Cum Oil: 217,282 BBL Cum Gas: 1,911,604 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,837 BBL/mo

Di (annual)

44.3%

b-factor

0.4

EUR

167,515 BBL

R-squared

0.603

type

hyperbolic

Operator History (from monthly production reports)

2008-07 — 2026-07 LEEXUS OIL LLC 217 mo

2007-12 — 2008-06 LEEXUS OIL & GAS L.L.P. 7 mo

2004-06 — 2007-11 SOUTHWEST RESOURCES, INC. 42 mo

2001-11 — 2004-05 HEP OIL COMPANY, LTD. 31 mo

1999-12 — 2001-10 BRAMMER SUPPLY, INC. 23 mo

1996-09 — 1999-11 NATIONAL ENERGY GROUP, INC. 39 mo

1993-05 — 1996-08 ALEXANDER ENERGY CORPORATION 40 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
3H	42-149-32755	LEEXUS OIL LLC	4	13,240	1997-01-27
5H	42-149-32933	LEEXUS OIL LLC	2	10,775	1997-01-14