Patents by Inventor Sivert Vist

Sivert Vist 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).

  • Method for turndown of a liquefied natural gas (LNG) plant
    Patent number: 10907896
    Abstract: A method for turndown of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, includes removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: February 2, 2021
    Assignee: EQUINOR ENERGY AS
    Inventors: Sivert Vist, Tore Løland, Morten Svenning, Silja Eriksson Gylseth
  • Method for start-up of a liquefied natural gas (LNG) plant
    Patent number: 10527346
    Abstract: A method for start-up of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, including removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: January 7, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Sivert Vist, Tore Løland, Morten Svenning, Silja Eriksson Gylseth
  • METHOD FOR TURNDOWN OF A LIQUEFIED NATURAL GAS (LNG) PLANT
    Publication number: 20130042645
    Abstract: A method for turndown of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, includes removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided.
    Type: Application
    Filed: February 25, 2011
    Publication date: February 21, 2013
    Applicant: STATOIL PETROLEUM AS
    Inventors: Sivert Vist, Tore Løland, Morten Svenning, Silja Eriksson Gylseth
  • METHOD FOR START-UP OF A LIQUEFIED NATURAL GAS (LNG) PLANT
    Publication number: 20130036763
    Abstract: A method for start-up of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, including removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided.
    Type: Application
    Filed: February 25, 2011
    Publication date: February 14, 2013
    Applicant: STATOIL PETROLEUM ASA
    Inventors: Sivert Vist, Tore Løland, Morten Svenning, Silja Eriksson Glyseth
  • Refrigerating or heat pump system with heat rejection at supercritical pressure
    Publication number: 20040069013
    Abstract: A refrigerating or heat pump system includes an evaporator (23), a compressor (20), an air-cooled heat rejecting heat exchanger (21) and an expansion device (22) being connected in a closed circuit and operating in a trans critical vapor compression cycle. The heat rejecting heat exchanger (21) is cooled by natural upwards circulation/convention of air. In a preferred embodiment the heat rejecting exchanger (21) is built into an air flow conduit or shell (11) to improve the natural air circulation by obtaining a chimney effect.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 15, 2004
    Inventors: Kare Aflekt, Arne Bredesen, Armin Hafner, Petter Neksa, Jostein Pettersen, Havard Rekstad, Geir Skaugen, Sivert Vist, Gholan Reza Zakeri