1. Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, PR China
2. Downhole Operation Company of CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu 610052, PR China
3. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China
4. BoL L. Herd Department of Petroleum Engineering, Texas Tech University, P.O. Box 43111, Lubbock, Texas 79409, United States