1. Wuhan Geological Survey Center, China Geological Survey, 430205 Wuhan, China
2. School of Geoscience and Technology, Southwest Petroleum University, 610500 Chengdu, China
3. Natural Gas Geology Key Laboratory of Sichuan Province, Southwest Petroleum University, 610500 Chengdu, China
4. Design and Planning Institute of SINOPEC Northwest Company, Urumqi 830011, China