Patents by Inventor Colin M. MacRae

Colin M. MacRae 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).

  • Self-locating reentry system for downhole well completions
    Patent number: 6244340
    Abstract: A self-locating reentry system is provided to allow reliable reentry from a primary wellbore into one or more secondary wellbores. The reentry system may include one or more self-locating assemblies which may be engaged with selected portions of a lateral opening disposed between the primary wellbore and a respective secondary wellbore. Each self-locating assembly and respective key or lug cooperate with each other to provide optimum location and alignment relative to the lateral opening for communication of well tools and smaller diameter tubing strings between the primary wellbore and the associated secondary wellbore. A retaining mechanism is preferably provided to maintain the locator lug or key in its first retracted position until the reentry system is at a desired downhole location relative to the selected lateral opening.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: June 12, 2001
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jody R. McGlothen, Daniel J. Themig, Robert T. Brooks, Dan P. Saurer, Colin M. MacRae, David J. Steele, William Sloane Muscroft, Denis C. Desranleau