Computer Modelling Group

Computer Modelling Group, abbreviated as CMG, is a software company that produces reservoir simulation programs for the oil and gas industry. It is based in Calgary, Alberta, Canada with branch offices in Houston, Dubai, Caracas and London. The company is traded on the Toronto Stock Exchange under the symbol CMG.The company offers three simulators, a black oil simulator, called IMEX, a compositional simulator called GEM and a thermal compositional simulator called STARS