Patents by Inventor Paul Wilmott

Paul Wilmott 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).

  • System for controlling the flow of fluid in an oil well
    Patent number: 5673751
    Abstract: A device is provided for controlling fluid flow in oil well casings or drill pipes. The device defines a flowpath for fluid through a casing section or drill pipe with the flowpath including a throttling valve which restricts or prevents the flow of fluid therethrough. This can be used to prevent U-tubing in casings or can be used to locate leaks in drill pipes or can be used to monitor the position of successive fluids of differing viscosities in a casing string.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: October 7, 1997
    Assignee: Stirling Design International Limited
    Inventors: Philip Head, Paul Gullett, Paul Wilmott
  • Device for controlling the flow of fluid in an oil well
    Patent number: 5404945
    Abstract: A device is provided for controlling fluid flow in oil well casings or drill pipes. The device defines a flowpath for fluid through a casing section or drill pipe with the flowpath including a throttling valve which restricts or prevents the flow of fluid therethrough. This can be used to prevent U-tubing in casings or can be used to locate leaks in drill pipes or can be used to monitor the position of successive fluids of differing viscosities in a casing string.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: April 11, 1995
    Assignee: Stirling Design International Limited
    Inventors: Philip Head, Paul Gullett, Paul Wilmott