WOOLUM-HOLLIGAN UNIT

Oil · District 03 · Lease #21428

Operator: UNION PACIFIC RESOURCES COMPANY

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

19k BBL

Cum Gas

111k MCF

casinghead

Wells

1

Production

1993-01 — 1997-03

Peak Month

1993-01

Production History

Cum Oil: 19,396 BBL Cum Gas: 111,301 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,228 BBL/mo

Di (annual)

74.9%

b-factor

0.0

EUR

19,664 BBL

R-squared

0.685

type

exponential

Operator History (from monthly production reports)

2008-05 — 2009-01 7711 CORPORATION, THE 9 mo

2007-08 — 2008-04 ENERVEST OPERATING, L.L.C. 9 mo

2002-12 — 2007-07 ANADARKO E&P COMPANY LP 56 mo

2001-02 — 2002-11 RME PETROLEUM COMPANY 22 mo

1993-01 — 2001-01 UNION PACIFIC RESOURCES COMPANY 97 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-041-31540	7711 CORPORATION, THE	5	15,000	2008-05-30