1. Chemical Engineering Department; King Fahd University of Petroleum & Minerals; Dhahran 31261 P. O. Box 5050 Saudi Arabia
2. Production Technology Team; EXPEC Advanced Research Center, Saudi Aramco; Dhahran 31311 Saudi Arabia
3. Petroleum Engineering Department and Center for Petroleum & Minerals; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia