Patents by Inventor Wesley C. Morrow

Wesley C. Morrow 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).

  • Washpipe apparatus
    Patent number: 6923254
    Abstract: Methods and apparatus for providing enhanced seal life of a swivel seal assembly by decreasing the effective differential pressure across a given rotating seal. The differential pressure is decreased by providing a pressurized fluid on the low-pressure side of the seal at a predetermined fraction of the operating pressure of the swivel seal assembly. A preferred swivel seal assembly utilizes a washpipe and packing box that are rigidly affixed to their respective conduits such that misalignment and dynamic run-out is compensated for in the gap between the washpipe and the packing box. A control system monitors and regulates the pressurized fluid supplied to the assembly.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: August 2, 2005
    Assignee: National-Oilwell, L.P.
    Inventors: Wesley C. Morrow, Jeffery J. Dinkel, Michael J. Kubinski
  • Washpipe apparatus
    Publication number: 20040207159
    Abstract: Methods and apparatus for providing enhanced seal life of a swivel seal assembly by decreasing the effective differential pressure across a given rotating seal. The differential pressure is decreased by providing a pressurized fluid on the low-pressure side of the seal at a predetermined fraction of the operating pressure of the swivel seal assembly. A preferred swivel seal assembly utilizes a washpipe and packing box that are rigidly affixed to their respective conduits such that misalignment and dynamic run-out is compensated for in the gap between the washpipe and the packing box. A control system monitors and regulates the pressurized fluid supplied to the assembly.
    Type: Application
    Filed: April 15, 2003
    Publication date: October 21, 2004
    Applicant: National-Oilwell, L.P.
    Inventors: Wesley C. Morrow, Jeffery J. Dinkel, Michael J. Kubinski