3D UTAPWeLS

ADVANCED LOGIC TECHNOLOGY

ANTARES Datensysteme GmbH

ATEMIS Technologies

AUTOMATED MUDLOGGING SYSTEMS

Baker Atlas Geoscience

BOWLER PETROPHYSICS INC

CANADIAN WELL LOGGING SOCIETY

CENTRAL GEOPHYSICAL EXPEDITION

CGG

CROCKER

DATA STORAGE TECHNOLOGIES (THREE OAKS SOFTWARE)

DIGIRULEINC.

Digital Formation, Inc

DONOVAN Enterprises Ltd.

EDCON

ElCoSoft Entwicklungs- und Vertriebsgesellschaft mbH

eGAMLS Inc

G R I

GEOGRAPHIX

GeolOil Petrophysics

GEOPHYSICAL MICRO COMPUTER

GEOSOFT DEVELOPMENT

GS SOFTWARE

HAMPTON DATA SERVICES

HRH Limited

HYDROCARBON DATA SYSTEMS

IHS ACCUMAP

INTERPRETIVE IMAGING

INTERPRETIVE SOFTWARE PRODUCTS

KANSAS GEOLOGICAL SURVEY

KNOWLEDGE SYSTEMS

HALLIBURTON LANDMARK (no longer Landmark Graphics Corp)

LOGIC GROUP (THE)

LOGICOM COMPUTER SERVICES (UK)

LOGPRO GEOTECHNICAL SERVICES

Math2Market GmbH

MIND & VISION COMPUTER SYSTEMS

MODERN LOG ANALYSIS COMPANY PTY LTD

NEURALOG

OILWARE

PARADIGM GEOPHYSICAL CORP

PETROLEUM SOFTWARE TECHNOLOGIES

PETROLOGIC

PETROPHYSICAL SOLUTIONS

PETROSPEC TECHNOLOGIES

RESDIP SYTEMS

SCHLUMBERGER GEOQUEST

SEISMIC SOLUTIONS INT

STRATAMAGNETIC SOFTWARE

SUPERSONIC GEOPHYSICAL LLC

TECHSIA TECHLOG

TEKNICA OVERSEAS LTD

TERRASCIENCES

Trivision Geosystems

US Radar

VIEWLOG SYSTEMS

WALT WHITMAN SOFTWARE

WELL LOGGING LABORATORY

XON Business Services

x-RG Software