Patents by Inventor Wilhelmus H. P. M. Heynen

Wilhelmus H. P. M. Heynen 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).

  • Wellhead assembly
    Patent number: 5092401
    Abstract: A wellhead assembly comprising housing (1), an outer casing hanger (20) and at least one inner casing hanger (22,24) for suspending casings concentrically into a well. Each casing hanger (20,22,24) is provided with an external supporting shoulder (26,40,60), the external supporting shoulder (26) of said outer casing hanger (20) being supported by an internal shoulder (11) formed on the central bore (9) of the housing (1), the external supporting shoulder (40,60) of each inner casing hanger (22,24) being supported by an internal shoulder (28,42) formed on the inner surface of a surrounding casing hanger. Annular space (32,46,64) formed around the upper end of each casing hanger (20,22,24) are sealed with a metal-to-metal seal (76, 78, 79) or with an annular central member (104).
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: March 3, 1992
    Assignee: Shell Oil Company
    Inventor: Wilhelmus H. P. M. Heynen