Patents by Inventor Roy L. Willig

Roy L. Willig 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).

  • Simultaneous multigun high density multiphase perforating unit
    Patent number: 4371044
    Abstract: A perforating unit for high density, multiphase well perforating operations having a plurality of elongate cylindrical perforating gun barrels whose firing axes are at predetermined angles one relative to the other. A multiport top sub secures the upper ends of the barrels with the barrels parallel to each other. A cablehead on the top sub provides for support. A multiport bottom sub secures the lower ends of the barrels. A circuit in the cablehead extends through the cablehead and into the unit for use in detonation of explosive charges to be received therein.
    Type: Grant
    Filed: August 22, 1980
    Date of Patent: February 1, 1983
    Assignee: CRC Wireline, Inc.
    Inventors: Roy L. Willig, Edward J. LeBlanc, III, Harold Airhart, Sr.