Patents by Inventor Reginald E. Francis

Reginald E. Francis 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).

  • One-trip cut-to-release apparatus and method
    Patent number: 7325612
    Abstract: Apparatuses and methods allow a downhole anchor device to be cut, released, and retrieved using a single one-trip cutter and removal assembly. The assembly preferably includes a cutter head recessed behind an anchor latch. The latch is landed to the anchor device to be removed and the cutter head is extended therefrom and activated. Once cut by the cutter head, the anchor device is retrieved upon a distal end of the assembly.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: February 5, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: James D. Hendrickson, Bennie Gill, Reginald E. Francis