Patents by Inventor David James Hoolas

David James Hoolas 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).

  • Methods of cementing a wellbore without using a spacer fluid with a chain extended non-ionic surfactant
    Patent number: 11814572
    Abstract: A method of cementing a wellbore includes injecting into the wellbore a non-aqueous fluid; injecting into the wellbore a cement slurry and a non-ionic surfactant composition after injecting the non-aqueous fluid; and allowing the cement slurry to set, wherein the non-ionic surfactant composition comprises an alkyl end-capped ethoxylated fatty alcohol, a chain extended non-ionic surfactant, or a combination comprising at least one of the foregoing.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: November 14, 2023
    Assignees: BAKER HUGHES OILFIELD OPERATIONS LLC, BP EXPLORATION OPERATING COMPANY LIMITED
    Inventors: Angela Anh Doan, Antonio Bottiglieri, Daniel J. Daulton, Cresencio Perez, Shanshan Huang, David James Hoolas, Emmanuel Therond, Paulo Jorge da Cunha Gomes
  • METHODS OF CEMENTING A WELLBORE WITHOUT USING A SPACER FLUID
    Publication number: 20220162494
    Abstract: A method of cementing a wellbore includes injecting into the wellbore a non-aqueous fluid; injecting into the wellbore a cement slurry and a non-ionic surfactant composition after injecting the non-aqueous fluid; and allowing the cement slurry to set, wherein the non-ionic surfactant composition comprises an alkyl end-capped ethoxylated fatty alcohol, a chain extended non-ionic surfactant, or a combination comprising at least one of the foregoing.
    Type: Application
    Filed: February 11, 2022
    Publication date: May 26, 2022
    Applicants: Baker Hughes Oilfield Operations LLC, BP EXPLORATION OPERATING COMPANY LIMITED
    Inventors: Angela Anh Doan, Antonio Bottiglieri, Daniel J. Daulton, Cresencio Perez, Shanshan Huang, David James Hoolas, Emmanuel Therond, Paulo Jorge da Cunha Gomes
  • Methods of cementing a wellbore without using a spacer fluid with an alkyl end-capped ethoxylated fatty alcohol
    Patent number: 11268010
    Abstract: A method of cementing a wellbore includes injecting into the wellbore a non-aqueous fluid; injecting into the wellbore a cement slurry and a non-ionic surfactant composition after injecting the non-aqueous fluid; and allowing the cement slurry to set, wherein the non-ionic surfactant composition comprises an alkyl end-capped ethoxylated fatty alcohol, a chain extended non-ionic surfactant, or a combination comprising at least one of the foregoing.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 8, 2022
    Assignees: BAKER HUGHES OILFIELD OPERATIONS LLC, BP EXPLORATION OPERATING COMPANY LIMITED
    Inventors: Angela Anh Doan, Antonio Bottiglieri, Daniel J. Daulton, Cresencio Perez, Shanshan Huang, David James Hoolas, Emmanuel Therond, Paulo Jorge da Cunha Gomes
  • METHODS OF CEMENTING A WELLBORE WITHOUT USING A SPACER FLUID
    Publication number: 20200308470
    Abstract: A method of cementing a wellbore includes injecting into the wellbore a non-aqueous fluid; injecting into the wellbore a cement slurry and a non-ionic surfactant composition after injecting the non-aqueous fluid; and allowing the cement slurry to set, wherein the non-ionic surfactant composition comprises an alkyl end-capped ethoxylated fatty alcohol, a chain extended non-ionic surfactant, or a combination comprising at least one of the foregoing.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicants: Baker Hughes Oilfield Operations LLC, BP EXPLORATION OPERATING COMPANY LIMITED
    Inventors: Angela Anh Doan, Antonio Bottiglieri, Daniel J. Daulton, Cresencio Perez, Shanshan Huang, David James Hoolas, Emmanuel Therond, Paulo Jorge da Cunha Gomes