Patents by Inventor David Hird Mackie

David Hird Mackie 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).

  • Tension arrangement for subsea Christmas tree
    Patent number: 11319767
    Abstract: The present disclosure describes a subsea well installation including an Xmas tree coupled to a wellhead. A guide frame is located at a lower region of the Xmas tree. A flush and cap tool (FACT) adaptor is mounted on an upper region of the Xmas tree. A tension arrangement extends between the guide frame and the FACT adaptor, to apply a compressive force through the Xmas tree.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 3, 2022
    Assignee: Expro North Sea Limited
    Inventor: David Hird Mackie
  • TENSION ARRANGEMENT FOR SUBSEA CHRISTMAS TREE
    Publication number: 20210025257
    Abstract: The present disclosure describes a subsea well installation including an Xmas tree coupled to a wellhead. A guide frame is located at a lower region of the Xmas tree. A flush and cap tool (FACT) adaptor is mounted on an upper region of the Xmas tree. A tension arrangement extends between the guide frame and the FACT adaptor, to apply a compressive force through the Xmas tree.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 28, 2021
    Inventor: David Hird Mackie