Patents Assigned to Michael P. Hartmann
  • Publication number: 20010001419
    Abstract: A tubular connection, an example of which is a subsea wellhead having a primary and secondary seal areas allows the use of a backup or contingency gasket for engagement with the secondary seal area in the wellhead should a failure occur in the primary seal area. In the preferred embodiment, the primary and secondary seal areas are sufficiently separated such that the erosion damage which occurs from leakage with the original gasket adjacent the primary seal area, which can spread below the primary seal area, leaves the secondary seal area unaffected. A backup or contingency gasket can be inserted for sealable contact with the secondary sealing area for further well operations.
    Type: Application
    Filed: October 5, 1998
    Publication date: May 24, 2001
    Applicant: Michael P. Hartmann
    Inventor: TIMOTHY J. ALLEN