• Anadarko Petroleum Corporation
  • Chevron
  • CooperSurgical, Inc.
  • Geokinetics, Inc.
  • GX Technology Corporation
  • Hess Corporation
  • IHS Energy
  • ION Geophysical Corporation
  • Lyondell Chemical
  • Landmark Graphics Corporation
  • Marathon Oil
  • Paradigm Geophysical, Inc.
  • Petris Technology, Inc.
  • Roxar Software Solutions
  • Santos LTD
  • Schlumberger Information Solutions
  • Shell Chemicals
  • Shell Oil Company
  • Shell Exploration and Production Company