Patents by Inventor Shikun Tong

Shikun Tong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11002126
    Abstract: 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.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: May 11, 2021
    Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
    Inventors: Zhiyuan Wang, Jianbo Zhang, Baojiang Sun, Wenqiang Lou, Xiaohui Sun, Zheng Liu, Shikun Tong
  • Publication number: 20210087918
    Abstract: An active control method and control device for wellbore pressure in the open-cycle drilling of marine natural gas hydrates comprises following steps: (1) optimized design of drilling parameter; (2) carry out open-cycle drilling according to the designed drilling parameters; (3) utilize the APWD to monitor the bottom-hole temperature and the bottom-hole pressure in real time for real-time correction of the wellbore annulus temperature and pressure calculation models; determine whether a hydrate decomposition has occurred in the annulus and then infer whether a shallow gas intrusion has occurred in the bottom hole; (4) Intelligent active control: control and adjust the mixed density of drilling fluid, the injection displacement of drilling fluid as well as the injection temperature of drilling fluid and the pump pressure in wellhead automatically during the well killing based on the real-time treatment results of the computer terminal for the signal fluctuations detected by the APWD.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Inventors: Zhiyuan Wang, Jianbo Zhang, Baojiang Sun, Wenqiang Lou, Xiaohui Sun, Zheng Liu, Shikun Tong