Organization
1. College of Energy Resources, Chengdu University of Technology,Chengdu, Sichuan 610059, China; 2. Sichuan Geophysical Company, Chuanqing Drilling Engineering CompanyLimited, CNPC, Chengdu, Sichuan 610213, China)Journal of Southwest Petroleum University, Vol. 33, No. 2,68 – 72, 2011(1674 – 5086,in Chinese)