Clients : Clients

A Partial Listing of PST Customers

AERA	Kerr-McGee Oil and Gas
Amerada Hess	Landmark Graphics
Anadarko Canada	Maersk Oil and Gas
Anadarko Petroleum	Marathon Oil
Core Lab	Maxus US Exploration
Apache	Newfield Exploration
Apache Energy Limited	Noble Energy
BHP Billiton Petroleum (Americas)	Occidental Oil of Elk Hills
Bill Barrett Corporation	Oxy, Inc.
BJ Services Company, USA	Petrobras
BP America Production Company	Repsol YPF
Cabot Oil and Gas	Samson
ConocoPhillips	Santos, Ltd.
ConocoPhillips Australia Pty., Ltd.	Saudi Arabian Oil Company
Degolyer and MacNaughton	Schlumberger DCS
Devon Canada	Seismotech
Devon Energy	Shell
Digital Formation	Talisman Energy
El Paso Energy	Total Austral, S.A.
Encana (including Tom Brown)	TotalFinaElf E&P Indonesia
Lukoil	Ultra Resources
Golden Eagle Energy, Ltd.	University of Texas
Goolsby Brothers and Associates	Unocal Corporation
Halliburton Calgary Reservoir Services	Williams Energy Services
Halliburton Energy Services	Wintershall AG
International Reservoir Technologies	WRM Services