Patents by Inventor Gordon Studholme

Gordon Studholme 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).

  • Apparatus for controlling inflation fluid to and from inflatable packer elements
    Patent number: 4776396
    Abstract: Apparatus for controlling the flow of inflation fluid to an inflatable packer elements forming part of a drill stem tester, comprises a hydraulically operated piston and adaptor assembly to inflate and deflate the packer elements. The initial flow of inflation fluid into the assembly causes the piston to move upward, aligning a conduit in the piston with a conduit in the adaptor. A valve permits passage of the inflation fluid to the packer elements through the conduit in the piston when the conduit in the piston are in alignment with the conduit in the adaptor. An increase in the pressure of the inflation fluid surrounding the piston causes a second valve in the adaptor to open, thereby allowing the piston to move downward and the pressure fluid from the packer elements to flow to the well bore.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: October 11, 1988
    Assignee: Mandarin Oilfield Services Ltd.
    Inventor: Gordon Studholme