1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 8 Xindu Road, Chengdu, Sichuan 610500, China
2. Natural Gas Purification Plant, PetroChina Southwest Oil and Gasfield Company, 542 Longshan Road, Chongqing 400021, China
3. School of Ocean Engineering, Harbin Institute of Technology, 2 Wenhua West Road, Weihai 264209, China