Patents by Inventor Ian J. Hardy

Ian J. Hardy 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).

  • Method of inserting wireline equipment into a subsea well
    Patent number: 4993492
    Abstract: A subsea wireline lubricator comprises in sequence (a) a stuffing box, (b) at least one blow-out preventer, (c) a riser, (d) a foot valve and (e) a connector for connection to a subsea well head assembly.The lubricator permits wireline access to subsea oil wells without the need for a conventional tensioned riser.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: February 19, 1991
    Assignee: The British Petroleum Company, p.l.c.
    Inventors: John F. Cressey, Ian J. Hardy
  • Subsea tool launching equipment
    Patent number: 4706756
    Abstract: A subsea pumpdown tool launcher is provided which permits pumpdown operations without requiring riser access from the surface. The launcher includes an entry valve connected to an upper connection of a fluid circulation line which is, in turn, connectable to a pump. An unrestricted riser section is connected to the lower connection of the circulation line. The bottom of this riser section attaches to the top of a second valve for the exit or entry of a pumpdown tool to or from a subsea wellhead. The bottom of the second valve is connected to the top of a lower connection of the fluid circulation line. The bottom of the lower connection is connected to the top of a subsea wellhead assembly.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: November 17, 1987
    Assignee: British Petroleum Company p.l.c.
    Inventors: Alan J. Dean, Ian J. Hardy