Patents by Inventor Frederico Carvalho

Frederico Carvalho 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).

  • System and method for a low drag flotation system
    Patent number: 7677322
    Abstract: A low drag flotation system for placing screens in horizontal wells is provided which includes a screen exterior to the washpipe to be placed for sand control, and hydraulically actuated valves for trapping air within the washpipe. The air in the washpipe creates a buoyancy force that decreases the drag force of the pipe string in the horizontal well, allowing it to move further down the well under its own weight. As a result, screens can be placed in longer lengths of horizontal wells to maximize oil and gas production.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: March 16, 2010
    Assignee: BJ Services Company
    Inventors: Andrew K. Jordan, Alvaro Jose Vilela, Frederico Carvalho
  • SYSTEM AND METHOD FOR A LOW DRAG FLOTATION SYSTEM
    Publication number: 20080185157
    Abstract: A low drag flotation system for placing screens in horizontal wells is provided which includes a screen exterior to the washpipe to be placed for sand control, and hydraulically actuated valves for trapping air within the washpipe. The air in the washpipe creates a buoyancy force that decreases the drag force of the pipe string in the horizontal well, allowing it to move further down the well under its own weight. As a result, screens can be placed in longer lengths of horizontal wells to maximize oil and gas production.
    Type: Application
    Filed: February 7, 2008
    Publication date: August 7, 2008
    Applicant: BJ Services Company
    Inventors: Andrew K. Jordan, Alvaro Jose Vilela, Frederico Carvalho