1. School of Petroleum Engineering; Xi'an Shiyou University; Xi'an China
2. Engineering Research Center of Development and Management for Low to Extra-Low Permeability Oil and Gas Reservoirs in West China; Ministry of Education; Xi'an China
3. Faculty of Engineering and Applied Science; Memorial University of Newfoundland; St. John's Newfoundland and Labrador Canada
4. Upstream Petroleum Research and Consulting Inc.; St. John's Newfoundland and Labrador Canada