Proceedings of The Fourth International Technical Symposium on Deepwater Oil and Gas Engineering

The fourth DWOG-Hyd conference was held on December 20 to 21, 2021, onsite in Qingdao and online, hosted by China University of Petroleum (East China), CNPC Engineering Technology R&D Company Ltd, Journal of Hydrodynamics and other institutes. The DWOG-Hyd 2021 focused on cutting-edge areas such as natural gas hydrate drilling and production, carbon dioxide storage, deepwater drilling and completion, oil and gas flow assurance and emerging hydrate-based technologies. A total of more than two thousand person-times participated both onsite and online. Participants are from ten countries including China, the USA, the UK, Canada, Brazil, Norway and Singapore, etc. Seventeen plenary speeches and seventy-seven session speeches were presented. One hundred and twenty-seven abstracts/papers were received, and forty papers were selected to publish in the proceedings.

In this book, there are nine papers for deepwater drilling and completion, thirteen papers for natural gas hydrate production, nine papers for deepwater oil and gas flow assurance and nine papers for fundamentals and emerging technologies of clathrate hydrate. A large number of new findings and novel ideas were reported