Patents by Inventor Rita de Cássia Comis WAGNER

Rita de Cássia Comis WAGNER 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).

  • METHOD OF REMOTE DIVERGENCE FOR WELLS EQUIPPED WITH INTELLIGENT COMPLETION
    Publication number: 20220389797
    Abstract: The present invention addresses to a remote divergence method for inhibiting or removing scaling in wells equipped with intelligent completion (IC), including sealing failures, in which a mixture of viscous gel and solid material in different granulometries is used (7) and spheres soluble in water (8) and in oil (6), aiming at maintaining the production of wells equipped with intelligent completion, as well as reducing costs in relation to operations commonly performed with rigs.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 8, 2022
    Inventors: Mario Germino Ferreira da Silva, Francisca Ferreira do Rosario, Alexandre Zacarias Ignacio Pereira, Rosane Alves Fontes, Maylton Freitas da Silva, Rita de Cassia Comis Wagner
  • Process for the production of nanoparticles and compositions
    Patent number: 10344201
    Abstract: This invention describes the development of technology for the preparation of superparamagnetic lipophilic nanofluids, as well as of drilling fluid additives based on the aforementioned nanofluids, which improve the properties which form walls or mud filter cakes and concomitantly act as contrast agents in RMN logging.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 9, 2019
    Assignees: PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Universidade de Sao Paulo—USP
    Inventors: Koiti Araki, Sergio Hiroshi Toma, Delmárcio Gomes Da Silva, Henrique Eisi Toma, Rita de Cássia Comis Wagner, Bernardo Coutinho Camilo Dos Santos, Alex Tadeu de Almeida Waldmann
  • PROCESS FOR THE PRODUCTION OF NANOPARTICLES AND COMPOSITIONS
    Publication number: 20160251561
    Abstract: This invention describes the development of technology for the preparation of superparamagnetic lipophilic nanofluids, as well as of drilling fluid additives based on the aforementioned nanofluids, which improve the properties which form walls or mud filter cakes and concomitantly act as contrast agents in RMN logging.
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Applicants: PETRÓLEO BRASILEIRO S.A. - PETROBRAS, Universidade de Sao Paulo - USP
    Inventors: Koiti ARAKI, Sergio Hiroshi TOMA, Delmárcio Gomes DA SILVA, Henrique Eisi TOMA, Rita de Cássia Comis WAGNER, Bernardo Coutinho Camilo DOS SANTOS, Alex Tadeu de Almeida WALDMANN