Patents by Inventor Carlos Alberto ALVES SAO MATEUS

Carlos Alberto ALVES SAO MATEUS 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).

  • PNEUMATIC LIFTING SYSTEM FOR HYDROCARBON PRODUCTION
    Publication number: 20220268138
    Abstract: This invention is related to a pneumatic lifting system for hydrocarbon production, comprising at least one mandrel (1) and at least one gas flow control valve (11), wherein the at least one mandrel (1) is connected to a production string (3), wherein the production string is positioned inside a well casing (2), wherein it comprises a straddle (10) supported on the production string and enveloping the mandrel, wherein in the region of the gas outlet (110) of the gas flow control valve (11) a chamber (105) is formed, wherein the straddle (10) comprises a means of fluidic communication (102) adapted to feed gas inside the straddle (10).
    Type: Application
    Filed: August 8, 2019
    Publication date: August 25, 2022
    Applicant: PETRÓLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Carlos Alberto ALVES SAO MATEUS, Daniel CENTURION BARRIONUEVO, Alcino RESENDE DE ALMEIDA, Ricardo DOS SANTOS FRAGA