Patents by Inventor Arthur R. Galletti di Cadilhac

Arthur R. Galletti di Cadilhac 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).

  • Sub surface safety valve block, particularly suitable for the risers of offshore platforms
    Patent number: 4967842
    Abstract: An underwater sub-surface safety valve block is connected between a well head located at the sea bottom, and the lower end of a riser. This allows the production tube and/or the service tube of the completion string to be closed by means of gate valves. This sub-surface safety valve block comprises a valve body provided with a vertical through-bore tightly closed at its upper end by a packer to which the upper portion of the completion string is connected. The bottom is tightly closed by a tubing hanger to which the lower portion of the completion string is connected. The packer and the tubing hanger are fastened inside the through-bore by means of a mechanical hooking which can be disengaged by means of a hydraulic controlled action. They are each provided with a through-channel in order to connect the respective production tubes with the central region of the through-bore, which can be closed by means of a gate valve.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: November 6, 1990
    Assignee: Agip, S.p.A.
    Inventors: Giuliano Franceschini, Giancarlo Amendola, Arthur R. Galletti di Cadilhac, Francesco Donati