1. School of Oil and Gas Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan Province, China
2. Chongqing Branch of Daqing Oilfield Co., LTD, Chongqing 402660, China
3. School of Foreign Languages, Chongqing Technology and Business University, Chongqing 400060, China
4. The No. 1 Gas Production Plant, PetroChina Changqing Oilfield Company, Xi'an 710021, Shaanxi Province, China