1. State Key Laboratory of Mining Disaster Prevention and ControlShandong University of Science and Technology Qingdao 266555 China
2. College of Energy and Mining EngineeringShandong University of Science and Techology Qingdao 266555 China
3. College of Petroleum EngineeringChinese University of Petroleum Qingdao 266555 Shandong China
4. Energy and Mineral EngineeringPennsylvania State University PA 16801 USA
5. Department of Chemical and Petroleum EngineeringUniversity of Calgary AB T2N1N4 Canada
6. Downhole Service Company, Chuanqing Drilling CompanyCNPC Chengdu 610051 Sichuan China
7. School of Mechanical and Mining EngineeringThe University of Queensland QLD 4074 Australia