1. Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)) Ministry of Education Qingdao 266580 P. R. China
2. School of Petroleum Engineering China University of Petroleum (East China) Qingdao 266580 P. R. China
3. China Oilfield Services Limited. (COSL Production Optimization) Tanggu Marine High ‐ tech Development Zone Tianjin 300459 China
4. OFFSHORE OIL ENGINEERING CO.LTD Engineering Company NO.1078 Danjiang Road, Tanggu, Tianjin P.O. BOX 616 P. R. China