Reservoir Engineering

Computer Modelling Group Ltd. Computer Modelling Group Ltd.- Sells and provides support for reservoir simulation software worldwide. Offices in North and South America, Europe and China. Cawley, Gillespie and Associates, Inc. Cawley, Gillespie and Associates, Inc.- Provides petroleum engineering services such as reservoir appraisal, field development planning and litigation. Located in Fort Worth and H… Gaffney, Cline and Associates Gaffney, Cline and Associates- Services include international reservoir appraisal, field development planning and exploration projects. Principal offices in UK, USA and Singapore. TDL International, Inc. TDL International, Inc.- Petrophysical consultant. Based in Forney, Texas. Ryder Scott Company Petroleum Consultants Ryder Scott Company Petroleum Consultants- Reservoir appraisal, field development planning and exploration projects. Offices in Houston and Calgary.