1. School of Mechanical Engineering, Southwest Petroleum University, Chengdu, China
2. Oil and Gas Equipment Technology Sharing and Service Platform of Sichuan Province, Southwest Petroleum University, Chengdu, China
3. Sichuan Special Equipment Inspection Institute, Chengdu, China
4. CCDC Changqing General Drilling Company, Xi’an, China
5. Petrochina Tarim Oilfield Company, CNPC, Korla, China