Patents by Inventor Sebastiao De Andrade Loureiro

Sebastiao De Andrade Loureiro 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).

  • Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition
    Patent number: 12129423
    Abstract: The present invention addresses to a wireline logging method using an aqueous based drilling fluid with xanthan gum and polyols in order to improve the quality of the acquisition of geological data from wireline logging (final logging) in open hole and reducing the risk of the tool getting stuck. It can also be applied in well control situations and used in the integral drilling of the reservoir, but with different application bias of the multifunctional fluid.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: October 29, 2024
    Assignee: Petróleo Brasileiro S.A.—Petrobras
    Inventors: Angelo Marinho Vianna, Walter Francisco Cardoso Junior, Fabio Fabri, Sebastiao De Andrade Loureiro, Kaio Augusto Gonzaga, Leonardo Silva De Almeida
  • WELL CONDITIONING METHOD FOR WIRELINE LOGGING USING DEDICATED AQUEOUS BASED DRILLING FLUID COMPOSITION
    Publication number: 20230104709
    Abstract: The present invention addresses to a wireline logging method using an aqueous based drilling fluid with xanthan gum and polyols in order to improve the quality of the acquisition of geological data from wireline logging (final logging) in open hole and reducing the risk of the tool getting stuck. It can also be applied in well control situations and used in the integral drilling of the reservoir, but with different application bias of the multifunctional fluid.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 6, 2023
    Inventors: Angelo Marinho Vianna, Walter Francisco Cardoso Junior, Fabio Fabri, Sebastiao De Andrade Loureiro, Kaio Augusto Gonzaga, Leonardo Silva De Almeida