Patents by Inventor Dan Merrill

Dan Merrill 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).

  • Patent number: 8641389
    Abstract: A labyrinth type seal section for use with an electrical submersible pump assembly having a guide tube with an axial bore to port wellbore fluid to a lower end of the seal section. Lubricating fluid fills substantially all of the seal section above an interface between the lubricating fluid and the wellbore fluid. The guide tube circumscribes a drive shaft that extends between a motor and a pump. The guide tube and shaft form an annulus filled with lubricating fluid that communicates to the well fluid and to the motor, so that pressure in the motor can be equalized to pressure of the ambient well fluid.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: February 4, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Kelsey A. McKinney, Dan Merrill
  • Publication number: 20130129543
    Abstract: A labyrinth type seal section for use with an electrical submersible pump assembly having a guide tube with an axial bore to port wellbore fluid to a lower end of the seal section. Lubricating fluid fills substantially all of the seal section above an interface between the lubricating fluid and the wellbore fluid. The guide tube circumscribes a drive shaft that extends between a motor and a pump. The guide tube and shaft form an annulus filled with lubricating fluid that communicates to the well fluid and to the motor, so that pressure in the motor can be equalized to pressure of the ambient well fluid.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Kelsey A. McKinney, Dan Merrill
  • 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
  • Publication number: 20110194949
    Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor, and a mechanical seal assembly on the shaft. The mechanical seal assembly includes a sleeve circumscribing the shaft that is axially movable with respect to the shaft. The shaft is retained within a guide mount, an inner circumference of the guide mount extends radially outward to define a shoulder. An annular seat is disposed on the shoulder. One end of a resilient retention assembly couples on the outer surface of the sleeve with its other end compressively urged against the seat. A resilient member is compressively mounted on one end to the sleeve and on another end to the shaft at a location past the end of the sleeve distal from the seat.
    Type: Application
    Filed: February 5, 2010
    Publication date: August 11, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Larry Parmeter, Dan Merrill
  • 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