1. Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, P. R. China
2. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, P. R. China
3. Petroleum Engineering Research Institute of Dagang Oilfield Company, Binhai New area, Tianjin, P. R. China
4. CNOOC Energy Technology & Services Limited, Binhai New area, Tianjin, P. R. China