Patents by Inventor Dennis P. Louviere

Dennis P. Louviere 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).

  • Wellhead assembly for injection wells
    Patent number: 4832128
    Abstract: A wellhead assembly is disclosed which accepts a downhole tool run on a wireline within an injection bore in which a central wellhead member has an injection port in communication with the injection bore upstream of an isolation valve within the injection bore. A stinger in the injection bore is movable between an extended position and a retracted position. The extended position of the stinger protects the wireline and the retracted position permits the downhole tool to be withdrawn upstream of the isolation valve.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: May 23, 1989
    Assignee: Shell Pipe Line Corporation
    Inventors: Bruce D. Light, Dennis P. Louviere