Patents by Inventor Vinícius R. Braga

Vinícius R. Braga 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 for installing an undersea catenary riser
    Patent number: 6685393
    Abstract: A method for launching a steel catenary riser (SCR) from the seabed to the surface comprising three stages. During the first stage, joints are continually welded to the metal pipe resting on the seabed to form the length of the steel catenary riser (SCR) in contact with the seabed. In the second stage a length of pipe previously wound onto a receiving device is welded to the free end of the last joint welded and then it is unwound and launched to form the intermediate length of the steel catenary riser (SCR). In the third stage joints are again welded to the intermediate length of the steel catenary riser (SCR) to form the top length of the said steel catenary riser (SCR).
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: February 3, 2004
    Assignee: Petroleo Brasileiro S.A.
    Inventors: Antonio C. F. Critsinelis, Renato M. C. da Silva, Vinícius R. Braga