Patents by Inventor Zhi Y. He

Zhi Y. He 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).

  • Pressure differential device with constant pressure drop
    Patent number: 10233726
    Abstract: In one aspect, an apparatus for use in a wellbore is disclosed, including: an inlet; an outlet; and a variable flow restriction configured to provide a predetermined constant pressure drop between the inlet and the outlet in response to a range of inlet flow rates. In another aspect, a method for providing a fluid flow within a wellbore is disclosed, including: providing the fluid flow to an inlet; restricting the fluid flow to provide a predetermined constant pressure drop between the inlet and an outlet in response to a range of fluid flow rates; and providing the fluid flow to the wellbore from the outlet.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: March 19, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Zhi Y. He, Madhawa Ratnayake, Kun Yuan, Carlos P. Izaguirre, David Teale, Darrin L. Willauer
  • Pressure differential device
    Patent number: 9745829
    Abstract: In one aspect, a pressure differential device including: an inlet; an outlet; and a fluid restricting member fluidly associated with the inlet and the outlet, wherein the fluid restricting member is configured to provide a first backpressure at a first setting and a second plurality of backpressures at a plurality of second settings. In another aspect, a method to control backpressure including: providing a fluid line with an inlet fluid flow; supplying the inlet fluid flow into a pressure differential device; expelling an outlet fluid flow out of the pressure differential device; pressurizing the inlet fluid flow to a first backpressure at a first setting of the pressure differential device; pressurizing the inlet fluid flow to a second plurality of backpressures at a plurality of second settings of the pressure differential device.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: August 29, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Zhi Y. He, Carlos P. Izaguirre
  • PRESSURE DIFFERENTIAL DEVICE
    Publication number: 20160040503
    Abstract: In one aspect, a pressure differential device including: an inlet; an outlet; and a fluid restricting member fluidly associated with the inlet and the outlet, wherein the fluid restricting member is configured to provide a first backpressure at a first setting and a second plurality of backpressures at a plurality of second settings. In another aspect, a method to control backpressure including: providing a fluid line with an inlet fluid flow; supplying the inlet fluid flow into a pressure differential device; expelling an outlet fluid flow out of the pressure differential device; pressurizing the inlet fluid flow to a first backpressure at a first setting of the pressure differential device; pressurizing the inlet fluid flow to a second plurality of backpressures at a plurality of second settings of the pressure differential device.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 11, 2016
    Inventors: Zhi Y. He, Carlos P. Izaguirre