Patents by Inventor Joseph H. Cassidy

Joseph H. Cassidy 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).

  • Apparatus for orienting a mule shoe to enter a previously-installed tubular in a lateral and method of use
    Patent number: 7513302
    Abstract: A method of entering a previously-installed tubular in a lateral borehole from a primary borehole connected to the lateral borehole includes passing a downhole tool from the primary borehole into the lateral borehole, actuating an orientation mule shoe coupled to the downhole tool to lift the nose portion of the downhole tool into alignment with the tubular in the lateral borehole, and inserting the nose portion of the downhole tool into the tubular.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: April 7, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Joseph H. Cassidy, Vance E. Nixon
  • Method of using an orientation mule shoe to enter a previously-installed tubular in a lateral
    Publication number: 20080156479
    Abstract: A method of entering a previously-installed tubular in a lateral borehole from a primary borehole connected to the lateral borehole includes passing a downhole tool from the primary borehole into the lateral borehole, actuating an orientation mule shoe coupled to the downhole tool to lift the nose portion of the downhole tool into alignment with the tubular in the lateral borehole, and inserting the nose portion of the downhole tool into the tubular.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph H. Cassidy, Vance E. Nixon
  • Method of using radial thrust elements to re-enter a previously-installed tubular in a lateral
    Publication number: 20080156495
    Abstract: A method of re-entering a previously-installed tubular in a lateral borehole from a primary borehole connected to the lateral borehole includes passing a downhole tool from the primary borehole into the lateral borehole, activating one or more radial thrust elements proximate to a nose portion of the downhole tool to apply a radial thrust to the downhole tool and lift the nose portion into alignment with the tubular, and inserting the nose portion of the downhole tool into the tubular.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Vance Nixon, Joseph H. Cassidy, Jeremie C. Fould, Timothy M. O'Rourke