Patents by Inventor John GREFF

John GREFF 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).

  • Multi-zone single trip completion system
    Patent number: 11629580
    Abstract: A multi-zone, one trip completion system for a wellbore is described. A plurality of isolation packers is installed in borehole to isolate a plurality of zones of the annulus between a tubing string and a wellbore. Each tubing string section is positioned in a zone and comprises a selectively openable stimulation port to provide stimulation fluid to its zone and a selectively openable production port to receive fluid from its zone. The system also comprises a circulation system with a plurality of circulation tubes and circulation tube valves, being configurable in a plurality of configurations to selectively connect, via a circulation flow path, the central bore or the borehole annulus of a wellbore at each of the plurality of sections, to an upper circulation flow path open to an annulus above an uppermost of the plurality of isolation packers.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: April 18, 2023
    Assignee: Packers Plus Energy Service, Inc.
    Inventors: Ronald Van Petegem, John Greff, Kelly Ireland
  • MULTI-ZONE SINGLE TRIP COMPLETION SYSTEM
    Publication number: 20210381351
    Abstract: A multi-zone, one trip completion system for a wellbore is described. A plurality of isolation packers is installed in borehole to isolate a plurality of zones of the annulus between a tubing string and a wellbore. Each tubing string section is positioned in a zone and comprises a selectively openable stimulation port to provide stimulation fluid to its zone and a selectively openable production port to receive fluid from its zone. The system also comprises a circulation system with a plurality of circulation tubes and circulation tube valves, being configurable in a plurality of configurations to selectively connect, via a circulation flow path, the central bore or the borehole annulus of a wellbore at each of the plurality of sections, to an upper circulation flow path open to an annulus above an uppermost of the plurality of isolation packers.
    Type: Application
    Filed: July 30, 2021
    Publication date: December 9, 2021
    Inventors: Ronald Van Petegem, John Greff, Kelly Ireland
  • Multi-zone single trip completion system
    Patent number: 11125060
    Abstract: A multi-zone, one trip completion system for a wellbore is described. A plurality of isolation packers is installed in borehole to isolate a plurality of zones of the annulus between a tubing string and a wellbore. Each tubing string section is positioned in a zone and comprises a selectively openable stimulation port to provide stimulation fluid to its zone and a selectively openable production port to receive fluid from its zone. The system also comprises a circulation system with a plurality of circulation tubes and circulation tube valves, being configurable in a plurality of configurations to selectively connect, via a circulation flow path, the central bore or the borehole annulus of a wellbore at each of the plurality of sections, to an upper circulation flow path open to an annulus above an uppermost of the plurality of isolation packers.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: September 21, 2021
    Assignee: Packers Plus Energy Services, Inc.
    Inventors: Ronald Van Petegem, John Greff, Kelly Ireland
  • MULTI-ZONE SINGLE TRIP COMPLETION SYSTEM
    Publication number: 20200149378
    Abstract: A multi-zone, one trip completion system for a wellbore is described. A plurality of isolation packers is installed in borehole to isolate a plurality of zones of the annulus between a tubing string and a wellbore. Each tubing string section is positioned in a zone and comprises a selectively openable stimulation port to provide stimulation fluid to its zone and a selectively openable production port to receive fluid from its zone. The system also comprises a circulation system with a plurality of circulation tubes and circulation tube valves, being configurable in a plurality of configurations to selectively connect, via a circulation flow path, the central bore or the borehole annulus of a wellbore at each of the plurality of sections, to an upper circulation flow path open to an annulus above an uppermost of the plurality of isolation packers.
    Type: Application
    Filed: April 10, 2018
    Publication date: May 14, 2020
    Inventors: Ronald VAN PETEGEM, John GREFF, Kelly IRELAND