Patents by Inventor Bruno GIOVANNETI

Bruno GIOVANNETI 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).

  • Drilling fluid with improved fluid loss and viscosifying properties
    Patent number: 10858566
    Abstract: The invention relates to a water-soluble branched sulfonated amphoteric polymer, for a water-based drilling fluid, wherein the polymer is obtained by precipitation polymerization, in a mixture of polar solvents, of at least one N,N?-dialkylacrylamide monomer and one sulfonic acid-containing monomer, in the presence of tetraallylammonium halide as branching agent. The invention also relates to a water-based drilling fluid for subterranean boreholes, including: an aqueous fluid, said aqueous fluid being selected from sea water, brine, or salt-containing aqueous solution, between 0.1 and 5.0 weight percent of the water-soluble branched sulfonated amphoteric polymer described above.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: December 8, 2020
    Assignee: S.P.C.M. SA
    Inventors: Cédrick Favero, Bruno Giovanneti, Olivier Ratel, Pierrick Cheucle
  • DRILLING FLUID WITH IMPROVED FLUID LOSS AND VISCOSIFYING PROPERTIES
    Publication number: 20200255716
    Abstract: The invention relates to a water-soluble branched sulfonated amphoteric polymer, for a water-based drilling fluid, wherein the polymer is obtained by precipitation polymerization, in a mixture of polar solvents, of at least one N,N?-dialkylacrylamide monomer and one sulfonic acid-containing monomer, in the presence of tetraallylammonium halide as branching agent. The invention also relates to a water-based drilling fluid for subterranean boreholes, including: an aqueous fluid, said aqueous fluid being selected from sea water, brine, or salt-containing aqueous solution, between 0.1 and 5.0 weight percent of the water-soluble branched sulfonated amphoteric polymer described above.
    Type: Application
    Filed: April 14, 2020
    Publication date: August 13, 2020
    Applicant: S.P.C.M. SA
    Inventors: Cédrick FAVERO, Bruno GIOVANNETI, Olivier RATEL, Pierrick CHEUCLE