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公开(公告)号:US11002126B2
公开(公告)日:2021-05-11
申请号:US17110354
申请日:2020-12-03
发明人: Zhiyuan Wang , Jianbo Zhang , Baojiang Sun , Wenqiang Lou , Xiaohui Sun , Zheng Liu , Shikun Tong
IPC分类号: E21B44/06 , E21B41/00 , E21B47/008 , E21B47/07 , E21B47/08 , E21B47/047
摘要: An active control method and system for wellbore pressure in open-cycle drilling in marine natural gas hydrates. The system comprises a drilling system, a drilling fluid injection system, and a data processing system for conducting the drilling operation.