Patents by Inventor William A. Grubb

William A. Grubb 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: 7695548
    Abstract: A dual use fluid filtration tool to separate both solids and gas from a fluid. The fluid filtration tool is suspended from and connected to a downhole submersible pump having a motor which rotates a shaft. The tool includes a housing having a cylindrical wall with a plurality of perforations therethrough and an interior chamber therein. A removable cylindrical filter surrounds the interior chamber of the housing in order to filter solid particles. At least one centralizer bearing within the interior chamber of the housing centralizes the shaft which passes therethrough. The fluid in the interior chamber is radially induced in order to separate gas from fluid. The gas separated from the fluid is directed out of the chamber while the fluid remaining in the interior chamber is directed to the intake of the downhole pump.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: April 13, 2010
    Assignee: Global Oilfield Services LLC
    Inventors: William A. Grubb, Carl G. Woodworth, Mark D. Fajt, Steve Smith
  • Patent number: 7695549
    Abstract: A dual use fluid filtration tool to separate both solids and gas from a fluid. The fluid filtration tool is suspended from and connected to downhole equipment, such as a downhole submersible pump having a motor, which rotates a shaft. The tool includes a housing having a cylindrical wall with a plurality of perforations therethrough and an interior chamber therein. A removable cylindrical filter surrounds the interior chamber of the housing in order to filter solid particles. At least one centralizer bearing within the interior chamber of the housing centralizes the shaft which passes therethrough. The fluid in the interior chamber is radially induced in order to separate gas from fluid. The gas separated from the fluid is directed out of the chamber while the fluid remaining in the interior chamber is directed to the intake of the downhole pump.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: April 13, 2010
    Assignee: Global Oilfield Services LLC
    Inventors: William A. Grubb, Carl G. Woodworth, Steve Smith
  • Publication number: 20080202762
    Abstract: A dual use fluid filtration tool to separate both solids and gas from a fluid. The fluid filtration tool is suspended from and connected to downhole equipment, such as a downhole submersible pump having a motor, which rotates a shaft. The tool includes a housing having a cylindrical wall with a plurality of perforations therethrough and m interior chamber therein. A removable cylindrical filter surrounds the interior chamber of the housing in order to filter solid particles. At least one centralizer bearing within the interior chamber of the housing centralizes the shaft which passes therethrough. The fluid in the interior chamber is radially induced in order to separate gas from fluid. The gas separated from the fluid is directed out of the chamber while the fluid remaining in the interior chamber is directed to the intake of the downhole pump.
    Type: Application
    Filed: April 25, 2008
    Publication date: August 28, 2008
    Applicant: GREEN COUNTRY SUPPLY, INC.
    Inventors: William A. Grubb, Carl G. Woodworth, Steve Smith
  • Patent number: 6962204
    Abstract: An isolation container designed for use with a downhole electric pump assembly commonly used in oil and gas drilling and production operations is disclosed. The isolation container has an annular housing with an axial inlet and outlet bore. A downhole electric pump assembly is centrally located within the pressure isolation container. The downhole electric pump assembly includes an electric pump positioned above and coupled to a motor seal section which is positioned above and coupled to a centrifugal pump, thereby providing a means to power the centrifugal pump. A blind coupling is positioned above the electric motor with a tubular member connected thereto and extending through the inlet of the isolation container. The tubular member connects to a tubing string supplying fluid from the surface. The blind coupling has a plurality of radially disposed ports to allow pressurized fluid from the surface to flow into the annulus between the downhole electric pump and the isolation container.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: November 8, 2005
    Assignee: Weatherford/Lamb, Inc.
    Inventors: William A. Grubb, David M. Haugen, Corey E. Hoffman
  • Patent number: 6779608
    Abstract: A surface pump assembly having a pressure vessel containing a submersible pump and an industrial motor located at least partially external to the pressure vessel having a shaft or seal thrust chamber extending at least partially into the pressure vessel to connect to pump. The pressure vessel has an inlet connected to a fluid source and one or more bleed off or pressure relief valves. The pump has an intake to receive the fluid and a discharge connected to a discharge conduit.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: August 24, 2004
    Assignee: Weatherford/Lamb, Inc.
    Inventors: William A. Grubb, Robert DeLong
  • Publication number: 20030192697
    Abstract: An isolation container designed for use with a downhole electric pump assembly commonly used in oil and gas drilling and production operations is disclosed. The isolation container has an annular housing with an axial inlet and outlet bore. A downhole electric pump assembly is centrally located within the pressure isolation container. The downhole electric pump assembly includes an electric pump positioned above and coupled to a motor seal section which is positioned above and coupled to a centrifugal pump, thereby providing a means to power the centrifugal pump. A blind coupling is positioned above the electric motor with a tubular member connected thereto and extending through the inlet of the isolation container. The tubular member connects to a tubing string supplying fluid from the surface. The blind coupling has a plurality of radially disposed ports to allow pressurized fluid from the surface to flow into the annulus between the downhole electric pump and the isolation container.
    Type: Application
    Filed: April 16, 2003
    Publication date: October 16, 2003
    Applicant: Weatherford/Lamb, Inc
    Inventors: William A. Grubb, David M. Haugen, Corey E. Hoffman
  • Patent number: 6568475
    Abstract: An isolation container designed for use with a downhole electric pump assembly commonly used in oil and gas drilling and production operations is disclosed. The isolation container has an annular housing with an axial inlet and outlet bore. A downhole electric pump assembly is centrally located within the pressure isolation container. The downhole electric pump assembly includes an electric pump positioned above and coupled to a motor seal section which is positioned above and coupled to a centrifugal pump, thereby providing a means to power the centrifugal pump. A blind coupling is positioned above the electric motor with a tubular member connected thereto and extending through the inlet of the isolation container. The tubular member connects to a tubing string supplying fluid from the surface. The blind coupling has a plurality of radially disposed ports to allow pressurized fluid from the surface to flow into the annulus between the downhole electric pump and the isolation container.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: May 27, 2003
    Assignee: Weatherford/Lamb, Inc.
    Inventors: William A. Grubb, David M. Haugen, Corey E. Hoffman
  • Publication number: 20010040032
    Abstract: A surface pump assembly having a pressure vessel containing a submersible pump and an industrial motor located at least partially external to the pressure vessel having a shaft or seal thrust chamber extending at least partially into the pressure vessel to connect to pump. The pressure vessel has an inlet connected to a fluid source and one or more bleed off or pressure relief valves. The pump has an intake to receive the fluid and a discharge connected to a discharge conduit.
    Type: Application
    Filed: April 4, 2001
    Publication date: November 15, 2001
    Inventors: William A. Grubb, Robert DeLong