Patents by Inventor James R. Rochen

James R. Rochen 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).

  • Interlocking fracture plug for pressure isolation and removal in tubing of well
    Patent number: 10794132
    Abstract: A downhole apparatus for use in a tubular includes a mandrel, a slip, a wedge, a cone, and seal elements. The mandrel, which can be permanent or temporary, has an end shoulder. The slip is disposed on the mandrel adjacent the first end shoulder, and the wedge is disposed on the mandrel between the cone and the slip. The cone is movable relative to the end shoulder to engage the slip toward the tubular. The seal elements are disposed on the wedge and slip and fit between each other. The fit seal elements seal against the tubular and seas off fluid communication in the annular space between the plug and the tubular.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: October 6, 2020
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Nauman H. Mhaskar, James R. Rochen, Wesley C. Pritchett
  • Interlocking Fracture Plug for Pressure Isolation and Removal in Tubing of Well
    Publication number: 20200040680
    Abstract: A downhole apparatus for use in a tubular includes a mandrel, a slip, a wedge, a cone, and seal elements. The mandrel, which can be permanent or temporary, has an end shoulder. The slip is disposed on the mandrel adjacent the first end shoulder, and the wedge is disposed on the mandrel between the cone and the slip. The cone is movable relative to the end shoulder to engage the slip toward the tubular. The seal elements are disposed on the wedge and slip and fit between each other. The fit seal elements seal against the tubular and seas off fluid communication in the annular space between the plug and the tubular.
    Type: Application
    Filed: August 3, 2018
    Publication date: February 6, 2020
    Inventors: Nauman H. Mhaskar, James R. Rochen, Wesley C. Pritchett