1. College of Construction Engineering, Jilin University, Changchun 130021, P. R. China
2. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, P. R. China
3. China University of Geosciences, Beijing 100083, P. R. China
4. Key Laboratory of Drilling and Exploitation Technology in Complex Condition, Ministry of Natural Resources, Changchun 130021, P. R. China