Patents by Inventor Paul D. Metcalfe

Paul D. Metcalfe 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).

  • Method and apparatus for expanding a welded connection
    Patent number: 6935430
    Abstract: The present invention generally relates to methods of connecting two expandable tubulars. In one aspect, the method includes flash welding the ends of the expandable tubulars together. Thereafter, the connected tubulars are lowered into the wellbore for expansion. The flash welding process provides a highly reliable joint for expansion. In another aspect, the present invention provides a method for expanding a non-uniform tubular. In one embodiment, the non-uniform tubular is formed by connecting two misaligned tubulars.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: August 30, 2005
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Simon J. Harrall, Paul D. Metcalfe, Robert P. Badrak
  • Method and apparatus for expanding a welded connection
    Publication number: 20040149450
    Abstract: The present invention generally relates to methods of connecting two expandable tubulars. In one aspect, the method includes flash welding the ends of the expandable tubulars together. Thereafter, the connected tubulars are lowered into the wellbore for expansion. The flash welding process provides a highly reliable joint for expansion. In another aspect, the present invention provides a method for expanding a non-uniform tubular. In one embodiment, the non-uniform tubular is formed by connecting two misaligned tubulars.
    Type: Application
    Filed: February 27, 2003
    Publication date: August 5, 2004
    Inventors: Simon J. Harrall, Paul D. Metcalfe, Robert P. Badrak