Patents by Inventor Rida Sabri

Rida Sabri 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).

  • Automatic control methods for positioning the lower end of a filiform structure, notably an oil pipe, at sea
    Patent number: 7066686
    Abstract: Method intended for automatic control of an underwater pipe for connecting the lower end of the pipe to a wellhead, wherein the following stages are carried out: Stage 1: determining a mathematical model expressing the position of the lower end of the pipe as a function of the position of the upper end of the pipe, Stage 2: determining a reference path leading to the wellhead, Stage 3: from the mathematical model determined in stage 1, determining control laws allowing to control the path of the lower end of the pipe, Stage 4: applying determined motions to the upper end of the pipe so that the position of the lower end is as close as possible to the reference path determined in stage 2.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: June 27, 2006
    Assignee: Institut Francais du Petrole
    Inventors: Rida Sabri, Claude Putot, Francis Biolley, Cédric Le Cunff, Yann Creff, Jean Levine
  • AUTOMATIC CONTROL METHOD FOR POSITIONING THE LOWER END OF A FILIFORM STRUCTURE, NOTABLY AN OIL PIPE, AT SEA
    Publication number: 20050265789
    Abstract: Method intended for automatic control of an underwater pipe for connecting the lower end of the pipe to a wellhead, wherein the following stages are carried out: Stage 1: determining a mathematical model expressing the position of the lower end of the pipe as a function of the position of the upper end of the pipe, Stage 2: determining a reference path leading to the wellhead, Stage 3: from the mathematical model determined in stage 1, determining control laws allowing to control the path of the lower end of the pipe, Stage 4: applying determined motions to the upper end of the pipe so that the position of the lower end is as close as possible to the reference path determined in stage 2.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 1, 2005
    Inventors: Rida Sabri, Claude Putot, Francis Biolley, Cedric Le Cunff, Yann Creff, Jean Levine