Patents by Inventor Andre Luiz V. Freitas

Andre Luiz V. Freitas 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).

  • Satellite tree module and flow line structure for interconnection of a satellite well to a subsea production system
    Patent number: 5310006
    Abstract: A satellite tree module (STM) (10) for controlling flow between a satellite flow and a subsea production system includes at the bottom of the STM a connector (12) of an internal-latch, hydraulically operated type. A lower structure (14) consists of a central ring and projecting arms terminating in guide funnels. An upper structure (18) supports a reentry pole (20) integrated to the STM assembly (10) via an orientation key, a reentry mandrel (22) and a cap (24) for protection of the external profile of the reentry mandrel (22) and its receptacles. A flow system is arranged above the lower structure (14) and inside the upper structure (18). The flow system consists of a set of pipes and valves through which production/injection, production testing and lift-gas fluids flow. A flow line terminal (26) and a control system responsible for the activation of the STM (10) components during the operational phase are amounted to one of the upper and lower structures.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: May 10, 1994
    Assignee: Petroleo Brasileiro S.A. -Petrobras
    Inventors: Andre Luiz V. Freitas, Cezar A. S. Paulo, Jose Eduardo M. Silva