This book is a compilation of selected papers from the Sixth International Technical Symposium on Deepwater Oil and Gas Engineering & the Fifth International Youth Forum on Gas Hydrate, held in Zhuhai, China in November 2025. The work focuses on the advancement of techniques for the deepwater oil and gas exploitation and natural gas hydrate exploitation. The book introduces new ideas for exploring deepwater oil, gas and hydrate in a safe and efficient way. Advances of the deepwater oil, gas and hydrate drilling and production, in oil and gas flow assurance, in CCUS and emerging technologies based on clathrate hydrate will be presented. It is a valuable resource for both practitioners and academics working in the field of deepwater oil and gas engineering.
