1. China University of Petroleum; Beijing, P. R. China and The University of Texas; Austin TX USA
2. China University of Petroleum; Beijing P. R. China
3. State Key Laboratory of Offshore Oil Exploitation; Beijing P. R. China
4. Drilling and Production Engineering Research Institute; PetroChina Jidong Oilfield Company; Tangshan P. R. China
5. Texas A&M University; College Station TX USA