1. Department of Petroleum Engineering; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
2. Center for Integrated Petroleum Research; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
3. Gas Processing Center; College of Engineering; P.O. Box 2713 Qatar University Doha Qatar
4. Chemical Engineering Department; College of Engineering; P.O. Box 2713 Qatar University Doha Qatar
5. Engineering Thermodynamics; Process & Energy Department; Delft University of Technology; Leeghwaterstraat 39 2628 CB Delft The Netherlands