Patents by Inventor Dong Phung

Dong Phung 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).

  • Drilling motor valve and method of using same
    Patent number: 9540877
    Abstract: A valve (11) for controlling the flow of a drilling fluid through a down-hole tool (10) positionable in a wellbore penetrating a subterranean formation. The down-hole tool has a housing with a drilling motor therein and a drill bit (1) at an end thereof. The drilling motor (9) has a housing with a rotor (206) rotationally movable in a rotor channel (204) as the drilling fluid passes through a rotor channel between the housing and the rotor. The rotor has a bypass channel therethrough for bypassing a portion of the drilling fluid therethrough. The valve includes a valve plate positionable upstream of the motor. The valve plate (200) has at least one flow passage (226) and at least one bypass passage (220) therethrough. The flow passage is in fluid communication with the rotor channel for passing the drilling fluid therethrough.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: January 10, 2017
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Curtis Lanning, Dong Phung, Aaron Schen, Jacob Riddel
  • DRILLING MOTOR VALVE AND METHOD OF USING SAME
    Publication number: 20140041943
    Abstract: A valve (11) for controlling the flow of a drilling fluid through a down-hole tool (10) positionable in a wellbore penetrating a subterranean formation. The down-hole tool has a housing with a drilling motor therein and a drill bit (1) at an end thereof. The drilling motor (9) has a housing with a rotor (206) rotationally movable in a rotor channel (204) as the drilling fluid passes through a rotor channel between the housing and the rotor. The rotor has a bypass channel therethrough for bypassing a portion of the drilling fluid therethrough. The valve includes a valve plate positionable upstream of the motor. The valve plate (200) has at least one flow passage (226) and at least one bypass passage (220) therethrough. The flow passage is in fluid communication with the rotor channel for passing the drilling fluid therethrough.
    Type: Application
    Filed: November 8, 2011
    Publication date: February 13, 2014
    Applicant: NATIONAL OILWELL VARCO, INC.
    Inventors: Curtis Lanning, Dong Phung, Aaron Schen, Jacob Riddel