PORTER-ORSAK UNIT

Oil · District 03 · Lease #21513

Operator: UNION PACIFIC RESOURCES COMPANY

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

6k BBL

Cum Gas

102k MCF

casinghead

Wells

1

Production

1993-01 — 2004-11

Peak Month

1993-01

Production History

Cum Oil: 6,487 BBL Cum Gas: 101,929 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

99 BBL/mo

Di (annual)

24.7%

b-factor

0.0

EUR

4,736 BBL

R-squared

0.327

type

exponential

Operator History (from monthly production reports)

2001-11 — 2026-07 AARCAL ENERGY, INC. 297 mo

2000-12 — 2001-10 B.W.O.C., INC. 11 mo

2000-08 — 2000-11 SEBESTA ENERGY, LLC 4 mo

1999-09 — 2000-07 OWS ENERGY, INC. 11 mo

1993-01 — 1999-08 UNION PACIFIC RESOURCES COMPANY 80 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-051-33294	AARCAL ENERGY, INC.	2	14,200	2001-02-20