Patents by Inventor Joakim Almqvist

Joakim Almqvist 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).

  • THRUST-BALANCING WET GAS COMPRESSOR
    Publication number: 20220220963
    Abstract: A contra-rotating compressor includes a first shaft assembly disposed in a housing, the first shaft assembly including an outer shaft, and a first plurality of impellers coupled to the outer shaft, wherein the outer shaft includes a final stage that includes a final impeller of the first plurality of impellers, a second shaft assembly disposed in the housing and rotatable about the longitudinal axis, the second shaft assembly including a second plurality of impellers, a first pair of annular seals between the final stage and an inner surface of the housing, the pair of annular seals being configured to permit relative rotation between the final stage and the housing, and a third annular seal positioned between the outer surface of the final stage and an inner surface of the second shaft assembly, the third annular seal configured to permit contra-rotation between the final stage and the second shaft assembly.
    Type: Application
    Filed: January 24, 2022
    Publication date: July 14, 2022
    Inventors: Hans Fredrik Kjellnes, Aasmund Valland, Joakim Almqvist, Thomas Bucher-Johannessen, Marius Askevold
  • Thrust-balancing wet gas compressor
    Patent number: 11231039
    Abstract: A contra-rotating compressor includes a first shaft assembly disposed in a housing, the first shaft assembly including an outer shaft, and a first plurality of impellers coupled to the outer shaft, wherein the outer shaft includes a final stage that includes a final impeller of the first plurality of impellers. The compressor further includes a second shaft assembly disposed in the housing and rotatable about the longitudinal axis that has a second plurality of impellers, a first pair of annular seals between the final stage and an inner surface of the housing that are configured to permit relative rotation between the final stage and the housing, and a third annular seal positioned between the outer surface of the final stage and an inner surface of the second shaft assembly that is configured to permit contra-rotation between the final stage and the second shaft assembly.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: January 25, 2022
    Assignee: OneSubsea IP UK Limited
    Inventors: Hans Fredrik Kjellnes, Åsmund Valland, Joakim Almqvist, Thomas Bucher-Johannessen, Marius Askevold
  • Liquid retainer for a production system
    Patent number: 10844698
    Abstract: An apparatus includes a seabed-disposed pump that includes an inlet to receive a fluid flow and an outlet. The apparatus includes a liquid retainer that is adapted to receive a fluid flow that is produced by a subsea well. The liquid retainer selectively retains and releases liquid from the fluid flow to regulate a gas volume fraction of the fluid flow that is received at the inlet of the pump.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: November 24, 2020
    Assignee: OneSubsea IP UK Limited
    Inventors: Stig Kaare Kanstad, Nils-Egil Kangas, Joakim Almqvist, Carl-Martin Carstensen
  • THRUST-BALANCING WET GAS COMPRESSOR
    Publication number: 20200072229
    Abstract: A contra-rotating compressor includes a first shaft assembly disposed in a housing, the first shaft assembly including an outer shaft, and a first plurality of impellers coupled to the outer shaft, wherein the outer shaft includes a final stage that includes a final impeller of the first plurality of impellers, a second shaft assembly disposed in the housing and rotatable about the longitudinal axis, the second shaft assembly including a second plurality of impellers, a first pair of annular seals between the final stage and an inner surface of the housing, the pair of annular seals being configured to permit relative rotation between the final stage and the housing, and a third annular seal positioned between the outer surface of the final stage and an inner surface of the second shaft assembly, the third annular seal configured to permit contra-rotation between the final stage and the second shaft assembly.
    Type: Application
    Filed: August 9, 2019
    Publication date: March 5, 2020
    Applicant: OneSubsea IP UK Limited
    Inventors: Hans Fredrik Kjellnes, Åsmund Valland, Joakim Almqvist, Thomas Bucher-Johannesen, Marius Askevold
  • LIQUID RETAINER FOR A PRODUCTION SYSTEM
    Publication number: 20190169968
    Abstract: An apparatus includes a seabed-disposed pump that includes an inlet to receive a fluid flow and an outlet. The apparatus includes a liquid retainer that is adapted to receive a fluid flow that is produced by a subsea well. The liquid retainer selectively retains and releases liquid from the fluid flow to regulate a gas volume fraction of the fluid flow that is received at the inlet of the pump.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 6, 2019
    Inventors: Stig Kaare Kanstad, Nils-Egil Kangas, Joakim Almqvist, Carl-Martin Carstensen