1. School of Petroleum Engineering Yangtze University Wuhan China
2. Leak Resistance & Sealing Technology Research Department National Engineering Laboratory of Petroleum Drilling Technology Key Laboratory of Drilling and Production Engineering for Oil and Gas Wuhan China
3. CNOOC EnerTech‐Drilling & Production Co. Tianjin China
4. Research Institute of Experiment and Detection, PetroChina Xinjiang Oilfield Company Karamay China
5. Downhole Service Division of Chuanqing Drilling Engineering Co. Ltd. CNPC Chengdu China