1. National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, People’s Republic of China
2. PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan 610041, People’s Republic of China
3. Chengdu North Petroleum Exploration and Development Technology Company, Limited, Chengdu, Sichuan 610500, People’s Republic of China
4. Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610100, People’s Republic of China