1. Grupo
de Investigación en Yacimientos de Hidrocarburos, Facultad
de Minas, Universidad Nacional de Colombia Sede MedellínKra, 80 No. 65-223, Medellín, Colombia
2. Department
of Chemical and Petroleum Engineering, University of Calgary, 2500 University
Drive NW, Calgary, Alberta, Canada
3. Department
of Chemical Engineering, An-Najah National University, Nablus, Palestine