1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation , 74602 Southwest Petroleum University , Chengdu , 610500 , China
2. Research Institute of Natural Gas Technology , Petrochina Southwest Oil & Gasfield Company , Chengdu , 610213 , China
3. Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering, College of Petroleum Engineering , 47897 Yangtze University , Hubei , 434023 , China