Patents by Inventor Cristiane Richard De Miranda

Cristiane Richard De Miranda 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).

  • Storable composition and slurries and use of same for cementing oil and gas wells
    Patent number: 6626242
    Abstract: Storable compositions and slurries for cementing oil and gas wells are described which comprise blast-furnace slag besides other additives which are usual in the cementing technique. The compositions and slurries are insufficiently activated (or are activated immediately before introducing them into the well), so that they can be stored for at least 72 hours (alternatively they may be stored indefinitely) without the setting of the composition and dispense with the addition of activation inhibitors. The use of the compositions and slurries in the cementing of oil and gas wells is also described.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: September 30, 2003
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Arnaldo Rodrigues D'Almeida, Cristiane Richard De Miranda, Gilson Campos
  • Storable compositions and slurries and use of same for cementing oil and gas wells
    Patent number: 6613142
    Abstract: Storable compositions and slurries for cementing oil and gas wells are described which comprise blast-furnace slag besides other additives which are usual in the cementing technique. The compositions and slurries are insufficiently activated (or are activated immediately before introducing them into the well), so that they can be stored for at least 72 hours (alternatively they may be stored indefinitely) without the setting of the composition and dispense with the addition of activation inhibitors. The use of the compositions and slurries in the cementing of oil and gas wells is also described.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: September 2, 2003
    Assignee: Petroleo Brasileiro S.A.- Petrobras
    Inventors: Arnaldo Rodrigues D'Almeida, Cristiane Richard De Miranda, Gilson Campos
  • Storable composition and slurries and use of same for cementing oil and gas wells
    Publication number: 20020162487
    Abstract: Storable compositions and slurries for cementing oil and gas wells are described which comprise blast-furnace slag besides other additives which are usual in the cementing technique. The compositions and slurries are insufficiently activated (or are activated immediately before introducing them into the well), so that they can be stored for at least 72 hours (alternatively they may be stored indefinitely) without the setting of the composition and dispense with the addition of activation inhibitors. The use of the compositions and slurries in the cementing of oil and gas wells is also described.
    Type: Application
    Filed: April 3, 2002
    Publication date: November 7, 2002
    Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Arnaldo Rodrigues D'Almeida, Cristiane Richard De Miranda, Gilson Campos