Patents by Inventor David Chilcoat

David Chilcoat 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).

  • Adjustable vane diffuser insert for electrical submersible pump
    Patent number: 9206677
    Abstract: A pump having an insert between an impeller and diffuser, where the insert includes an annulus that is in communication with fluid flow passages in the impeller and diffuser. The passages and annulus define a fluid flow path through the pump. Vanes are provided in the annulus that can pivot and vary the cross sectional area of the fluid flow path. Regulating the fluid flow path area alters the flow rate where the pump operates at its maximum efficiency. Thus by monitoring flow through the pump, the vanes can be adjusted so the flow rate of maximum efficiency corresponds to the actual flow rate.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: December 8, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Baojun Song, David Chilcoat
  • Axial thrust balanced impeller for use with a downhole electrical submersible pump
    Patent number: 8568081
    Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: October 29, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Baojun Song, David Chilcoat
  • ADJUSTABLE VANE DIFFUSER INSERT FOR ELECTRICAL SUBMERSIBLE PUMP
    Publication number: 20130051977
    Abstract: A pump having an insert between an impeller and diffuser, where the insert includes an annulus that is in communication with fluid flow passages in the impeller and diffuser. The passages and annulus define a fluid flow path through the pump. Vanes are provided in the annulus that can pivot and vary the cross sectional area of the fluid flow path. Regulating the fluid flow path area alters the flow rate where the pump operates at its maximum efficiency. Thus by monitoring flow through the pump, the vanes can be adjusted so the flow rate of maximum efficiency corresponds to the actual flow rate.
    Type: Application
    Filed: August 15, 2012
    Publication date: February 28, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Baojun Song, David Chilcoat
  • Downhole electrical submersible pump seal
    Patent number: 8221092
    Abstract: An improved seal assembly for a downhole electrical submersible pump assembly.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: July 17, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: David Chilcoat, Kevin Bierig, Larry Parmeter, Dan Merrill
  • Axial Thrust Balanced Impeller For Use With A Downhole Electrical Submersible Pump
    Publication number: 20110255951
    Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 20, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Baojun Song, David Chilcoat
  • Downhole Electrical Submersible Pump Seal
    Publication number: 20100111711
    Abstract: An improved seal assembly for a downhole electrical submersible pump assembly.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 6, 2010
    Applicant: Baker Hughes Incoroporated
    Inventors: David Chilcoat, Kevin Bierig, Larry Parmeter, Dan Merril