1. Département Etudes Thermodynamiques, Division Laboratoires, Sonatrach, Avenue 1er Novembre, 35000 Boumerdes, Algeria
2. Petroleum Engineering and Development Division, Sonatrach, 16035 Hydra, Algiers, Algeria
3. Department of Petroleum and Natural Gas Engineering, Collage of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
4. Stratum Reservoir LLC, Fabrikkveien 35-37, 4033 Stavanger, Norway