1. School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu, China
2. Sichuan Engineering Research Center for Gas Safety and High-Efficiency Utilization, Chengdu, China
3. Engineering Technology, Chengdu Xindu Hong Kong and China Gas Company Limited, Chengdu, China
4. CNPC Chuanqing Drilling Engineering Company International Ltd, Chengdu, China