Patents by Inventor Jean-Pierre L. Boutet

Jean-Pierre L. Boutet 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).

  • Production well-heads for underwater oil wells
    Patent number: 4223738
    Abstract: In a production well-head for an underwater oil well the suspension head of the innermost tubing, which has a frusto conical surface on which the production tube suspension member seats, has a duct leading from the enclosed space between the innermost tubing and the tubing adjacent thereto, to the interior of the innermost tubing, and a duct communicating therewith is provided in the suspension member.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: September 23, 1980
    Assignee: Compagnie Francaise des Petroles
    Inventors: Jean-Pierre L. Boutet, Francois C. Gueuret