AspenTech, Atos/Unify, BP, Chevron, Entero, Expro, Fugro, Oil States International, EMC, IOGP, PTC, Aker Solutions, Berkana Resources, Borets, Burns & McDonnell, CGI, Emerson, Energy Navigator, Enertia Software, EnLink, Total, Ensco, GE, Hart Energy, IBM, Siemens, MDU Resources, MPG Pipeline Contractors, National Fuel, Navtor, Energistics, Oildex, OFS Portal.
Neil McNaughton (Thu,) studied this question.