Pivoting Derrick Patents (Class 414/22.56)
  • Pipe handling apparatus
    Patent number: 10584541
    Abstract: A pipe handling apparatus includes a lower mast, upper mast, and trailer. The lower mast and upper mast may be pivotably coupled at a hinge point. The trailer may be coupled to the lower mast by a hydraulic cylinder. The pipe handling apparatus may be transported to a drilling rig and the lower mast mechanically coupled to the drilling rig. The upper mast may be pivoted relative to the lower mast at the hinge point. The lower mast and upper mast may be pivoted from the horizontal position to the vertical position by the hydraulic cylinder.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: March 10, 2020
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Padira Reddy, Ashish Gupta, Denver Lee
  • Offshore system
    Patent number: 8142107
    Abstract: This invention relates to an offshore system, comprising a drilling vessel, e.g. a semi-submersible drilling vessel comprising a deck on which a drilling tower for performing drilling operations is mounted. The vessel is furthermore provided with a support for a tiltable J-lay tower for laying a pipeline, said support being arranged next to the drilling tower, and the offshore system further includes a J-lay tower which is or can be mounted on said support.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: March 27, 2012
    Assignee: Itrec B.V.
    Inventors: Joop Roodenburg, Jurjen Rinnert Haitsma, Laurens Cornelis Claassen
  • Apparatus for slant drilling
    Patent number: 7469754
    Abstract: A rig for drilling wells or holes at virtually any angle, from nearly horizontal to vertical, has a trailer mounted derrick which can be tilted to a desired angle, a top drive unit slidably mounted within such derrick and a hydraulic jacking apparatus. An automated pipe handling apparatus permits efficient transfer of pipe sections from the derrick to a truck, pipe rack or other storage facility.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: December 30, 2008
    Inventor: Harold Wayne Landry