Patents by Inventor Dimitri Cadere

Dimitri Cadere 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).

  • High temperature wellbore monitoring method and apparatus
    Patent number: 7862228
    Abstract: The invention provides an apparatus for use in high temperature conditions, constituted of a downhole element and a master element connected together via a sealed connection; wherein the downhole element comprises a temperature sensor and a pressure sensor without any electronics and is embedded in a sealed housing resistant to high temperature; wherein the master element comprises electronics needed for function of the temperature sensor and the pressure sensor; and wherein the sealed connection is resistant to high temperature.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: January 4, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Constantin Popilian, Dimitri Cadere, Jacques Wiese, Jean-Claude Ostiz, Anthony Veneruso
  • Pressure measuring device and method
    Patent number: 7832276
    Abstract: A device to measure a fluid pressure comprises a pressure sensing element 10 and a pressure readout element 20. The pressure sensing element 10 comprises a cavity 11 capped by a flexible membrane 13, the cavity having a length d that varies with the fluid pressure P1 applied on the flexible membrane 13. The pressure readout element 20 comprises a light source 24 for providing an incident beam of a determined wavelength range directed towards the cavity and an optical spectral analyzer 25 for measuring a power spectrum of a return beam reflected by the cavity, and processing means 27 for determining the cavity length d and the fluid pressure P1 based on the power spectrum.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: November 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Xu Wu, Arthur Hartog, Dimitri Cadere, Tsutomu Yamate
  • PRESSURE MEASURING DEVICE AND METHOD
    Publication number: 20090151423
    Abstract: A device to measure a fluid pressure comprises a pressure sensing element 10 and a pressure readout element 20. The pressure sensing element 10 comprises a cavity 11 capped by a flexible membrane 13, the cavity having a length d that varies with the fluid pressure P1 applied on the flexible membrane 13. The pressure readout element 20 comprises a light source 24 for providing an incident beam of a determined wavelength range directed towards the cavity and an optical spectral analyzer 25 for measuring a power spectrum of a return beam reflected by the cavity, and processing means 27 for determining the cavity length d and the fluid pressure P1 based on the power spectrum.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 18, 2009
    Inventors: Xu Wu, Arthur Hartog, Dimitri Cadere, Tsutomu Yamate
  • High Temperature Wellbore Monitoring Method and Apparatus
    Publication number: 20070032957
    Abstract: The invention provides an apparatus for use in high temperature conditions, constituted of a downhole element and a master element connected together via a sealed connection; wherein the downhole element comprises a temperature sensor and a pressure sensor without any electronics and is embedded in a sealed housing resistant to high temperature; wherein the master element comprises electronics needed for function of the temperature sensor and the pressure sensor; and wherein the sealed connection is resistant to high temperature.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 8, 2007
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Constantin Popilian, Dimitri Cadere, Jacques Wiese, Jean-Claude Ostiz, Anthony Veneruso