Patents Assigned to Transocean Offshore Inc.
  • Multi-activity offshore exploration and/or development drill method and apparatus
    Patent number: 6085851
    Abstract: A multi-activity driliship, or the like, method and apparatus having a single derrick and multiple tubular activity stations within the derrick wherein primary drilling activity may be conducted from the derrick and simultaneously auxiliary drilling activity may be conducted from the same derrick to reduce the length of the primary drilling activity critical path.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: July 11, 2000
    Assignee: Transocean Offshore Inc.
    Inventors: Robert J. Scott, Robert P. Herrmann, Donald R. Ray
  • Multi-activity offshore exploration and/or development drilling method and apparatus
    Patent number: 6068069
    Abstract: A multi-activity drillship, or the like, method and apparatus having a single derrick and multiple tubular activity stations within the derrick wherein primary drilling activity may be conducted from the derrick and simultaneously auxiliary drilling activity may be conducted from the same derrick to reduce the length of the primary drilling activity critical path.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: May 30, 2000
    Assignee: Transocean Offshore Inc.
    Inventors: Robert J. Scott, Robert P. Herrmann, Donald R. Ray
  • Multi-activity offshore exploration and/or development drilling method and apparatus
    Patent number: 6056071
    Abstract: A multi-activity drillship, or the like, method and apparatus having a single derrick and multiple tubular activity stations within the derrick wherein primary drilling activity may be conducted from the derrick and simultaneously auxiliary drilling activity may be conducted from the same derrick to reduce the length of the primary drilling activity critical path.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: May 2, 2000
    Assignee: Transocean Offshore Inc.
    Inventors: Robert J. Scott, Robert P. Herrmann, Donald R. Ray
  • Multi-activity offshore exploration and/or development drilling method and apparatus
    Patent number: 6047781
    Abstract: A multi-activity drillship, or the like, method and apparatus having a single derrick and multiple tubular activity stations within the derrick wherein primary drilling activity may be conducted from the derrick and simultaneously auxiliary drilling activity may be conducted from the same derrick to reduce the length of the primary drilling activity critical path.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: April 11, 2000
    Assignee: Transocean Offshore Inc.
    Inventors: Robert J. Scott, Robert P. Herrmann, Donald R. Ray