Patents by Inventor Jens Emil Vindstad

Jens Emil Vindstad 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).

  • Process for removing metal naphthenate from crude hydrocarbon mixtures
    Patent number: 10358609
    Abstract: Metal naphthenate is removed from a crude hydrocarbon mixture by a process. The process includes mixing the crude hydrocarbon mixture comprising metal naphthenate with an acid in the presence of water, wherein the acid converts the metal naphthenate to naphthenic acid and metal salt; allowing the metal salt to partition into a water phase; and separating the crude heavy hydrocarbon mixture comprising naphthenic acid and the water phase comprising the metal salt.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 23, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventors: Knut Grande, Hege Kummernes, Kim Reidar Høvik, Jens Emil Vindstad, Heidi Mediaas, Jorunn Steinsland Rosvoll, Ingvild Johanne Haug
  • Process for stabilizing an oil-in-water or water-in-oil emulsion
    Patent number: 10202550
    Abstract: A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 12, 2019
    Assignee: Equinor Energy AS
    Inventors: Jens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande
  • PROCESS FOR REMOVING METAL NAPHTHENATE FROM CRUDE HYDROCARBON MIXTURES
    Publication number: 20170349841
    Abstract: The present invention provides a process for removing metal naphthenate from a crude hydrocarbon mixture comprising: —mixing said crude hydrocarbon mixture (1) comprising metal naphthenate with an acid (3) in the presence of water, wherein said acid converts said metal naphthenate to naphthenic acids and metal salts; —allowing said metal salt to partition into a water phase; —separating said crude heavy hydrocarbon mixture (5) comprising naphthenic acid and said water phase (6) comprising said metal salt; and —preferably pumping said water phase comprising metal salt to a formation.
    Type: Application
    Filed: December 23, 2014
    Publication date: December 7, 2017
    Applicant: STATOIL PETROLEUM AS
    Inventors: Knut GRANDE, Hege KUMMERNES, Kim Reidar HØVIK, Jens Emil VINDSTAD, Heidi MEDIAAS, Jorunn Steinsland ROSVOLL, Ingvild Johanne HAUG
  • PROCESS FOR STABILIZING AN OIL-IN-WATER OR WATER-IN-OIL EMULSION
    Publication number: 20160199803
    Abstract: A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.
    Type: Application
    Filed: December 28, 2015
    Publication date: July 14, 2016
    Inventors: Jens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande
  • Process for stabilizing an oil-in-water or water-in-oil emulsion
    Patent number: 9222035
    Abstract: A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: December 29, 2015
    Assignee: STATOIL PETROLEUM AS
    Inventors: Jens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande
  • Method for isolation and quantification of naphthenate forming acids (“ARN-acids”)
    Patent number: 8674161
    Abstract: A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: March 18, 2014
    Assignee: Statoil Petroleum AS
    Inventors: Heidi Mediaas, Knut Grande, Hege Kummernes, Jens Emil Vindstad
  • METHOD FOR ISOLATION AND QUANTIFICATION OF NAPHTHENATE FORMING ACIDS ("ARN ACIDS")
    Publication number: 20120190907
    Abstract: A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content.
    Type: Application
    Filed: June 22, 2010
    Publication date: July 26, 2012
    Applicant: STATOIL PETROLEUM AS
    Inventors: Heidi Mediaas, Knut Grande, Hege Kummernes, Jens Emil Vindstad
  • PROCESS
    Publication number: 20100292349
    Abstract: A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.
    Type: Application
    Filed: November 17, 2008
    Publication date: November 18, 2010
    Applicant: STATOIL ASA
    Inventors: Jens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande