Patents by Inventor Doran B. Mauldin

Doran B. Mauldin 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 expansion method and apparatus for use in a wellbore
    Patent number: 6732806
    Abstract: The present invention includes a method and apparatus for setting a liner in a wellbore and then expanding a screen in the wellbore in a single trip. In one aspect of the invention, a liner and expandable screen is provided with a slip assembly to fix the liner in the wellbore. An expansion tool and work sting is run into the wellbore in the liner. After the liner is set, the expansion tool is used to expand the screen. In another embodiment, an annular area between the expansion tool and work string is utilized in order to set the slips. Thereafter, cup packers used in forming the annulus are lifted from the liner prior to expanding the screen.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: May 11, 2004
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Doran B. Mauldin, Larry D. Sibley
  • One trip expansion apparatus for use in a wellbore
    Publication number: 20030141059
    Abstract: The present invention includes a method and apparatus for setting a liner in a wellbore and then expanding a screen in the wellbore in a single trip. In one aspect of the invention, a liner and expandable screen is provided with a slip assembly to fix the liner in the wellbore. An expansion tool and work sting is run into the wellbore in the liner. After the liner is set, the expansion tool is used to expand the screen. In another embodiment, an annular area between the expansion tool and work string is utilized in order to set the slips. Thereafter, cup packers used in forming the annulus are lifted from the liner prior to expanding the screen.
    Type: Application
    Filed: January 29, 2002
    Publication date: July 31, 2003
    Inventors: Doran B. Mauldin, Larry D. Sibley