1. School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom
2. School of Engineering, University of Kansas, Lawrence, Kansas 66045, United States
3. Department of Petroleum Engineering, Faculty of Civil and Geo-Engineering, Kwame Nkrumah University of Science and Technology, P.O. Box UP 1083, KNUST-Kumasi, Kumasi 23321, Ghana