Patents by Inventor Jonathan J. Elphick

Jonathan J. Elphick 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).

  • Downhole production and injection pump system
    Patent number: 7621339
    Abstract: A downhole pump, positionable in a fluid column that is substantially separated into an oil portion and a water portion, for selectively lifting the oil to a surface and injecting the water into an injection zone includes a housing having a top wall, and a bottom wall defining a cylinder; a plunger positioned within the cylinder reciprocable through an induction stroke and a production stroke; a piston moveably positioned between the plunger and the top wall separating an oil chamber from a water chamber; an oil intake assembly providing one-way fluid flow from the fluid column to the oil chamber, the oil intake assembly including means for selectively allowing induction of the oil and blocking induction of the water into the oil chamber; an oil exhaust providing one-way fluid flow from the oil chamber to the surface; a water intake providing one-way fluid flow from the fluid column to the water chamber; a flow restriction position in the water intake to substantially balance the pressure drop in the oil inta
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: November 24, 2009
    Inventors: Ashley B. Johnson, Jonathan J. Elphick
  • DOWNHOLE PRODUCTION AND INJECTION PUMP SYSTEM
    Publication number: 20080190622
    Abstract: A downhole pump, positionable in a fluid column that is substantially separated into an oil portion and a water portion, for selectively lifting the oil to a surface and injecting the water into an injection zone includes a housing having a top wall, and a bottom wall defining a cylinder; a plunger positioned within the cylinder reciprocable through an induction stroke and a production stroke; a piston moveably positioned between the plunger and the top wall separating an oil chamber from a water chamber; an oil intake assembly providing one-way fluid flow from the fluid column to the oil chamber, the oil intake assembly including means for selectively allowing induction of the oil and blocking induction of the water into the oil chamber; an oil exhaust providing one-way fluid flow from the oil chamber to the surface; a water intake providing one-way fluid flow from the fluid column to the water chamber; a flow restriction position in the water intake to substantially balance the pressure drop in the oil inta
    Type: Application
    Filed: February 14, 2007
    Publication date: August 14, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ashley B. Johnson, Jonathan J . Elphick