Patents by Inventor Stephane Vannuffelen

Stephane Vannuffelen 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).

  • Patent number: 8555696
    Abstract: Methods of calibrating a fluid analyzer for use in a wellbore are described. An example method of generating calibration data for a fluid analyzer for use in a downhole tool involves lowering a downhole tool including a fluid analyzer to a location in a wellbore, measuring, via the fluid analyzer, a characteristic value of a calibration fluid or a vacuum while the fluid analyzer is at the location, obtaining an expected characteristic value for the calibration fluid or the vacuum at the location, and comparing the measured characteristic value to the expected characteristic value to generate a calibration value for the fluid.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: October 15, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Chengli Dong, Ricardo R. Vasques, Michael O'Keefe, Peter S. Hegeman, Oliver C. Mullins, Go Fujisawa, Stephane Vannuffelen, Richard Jackson, Ahmad Saputra
  • Publication number: 20120192982
    Abstract: A terminal end-attachment device (10) for a flexible pipe (12) comprising an attachment body (14) adapted to receive a terminal end of a flexible pipe (12) and to couple the said flexible pipe to a hydrocarbon production installation structure. The device (10) further comprising a strain sensor (16) coupled to a sensor carrier (18), at least part of the sensor carrier (18) and the strain sensor (16) being at least partially incorporated within the attachment body (14). A method of manufacturing a terminal end-attachment device (10) for a flexible pipe (12) is also provided.
    Type: Application
    Filed: March 9, 2009
    Publication date: August 2, 2012
    Inventors: Damon Richard Roberts, Rogerio Tadeu Ramos, Stephane Vannuffelen
  • Patent number: 8082780
    Abstract: Methods and apparatus for decreasing a density of a downhole fluid are described. An example apparatus to analyze a downhole fluid includes a chamber to decrease a density of at least a portion of a sample of a downhole fluid. Additionally, the example apparatus includes a sensor to measure a pressure of at least the portion of the sample in the chamber. Further, the example apparatus includes a fluid measurement unit to measure a characteristic of at least the portion of the sample based on a relationship between the pressure of at least the portion of the sample in the chamber and a predetermined pressure. Further yet, the example apparatus includes a control unit to determine a parameter of the downhole fluid based on the characteristic.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: December 27, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Tsutomu Yamate
  • Publication number: 20110153225
    Abstract: A method and system for monitoring a flexible pipe, including an inline sensor system coupled to the annulus of the flexible pipe to detect corrosion of the flexible pipe. Also disclosed are method and system for monitoring an amount of water being accumulated in an annulus of a flexible pipe, including locating a pressure measurement system proximate to the annulus for measuring pressure of gas inside the annulus; controlling a flow of vent gas with a vent gas valve; positioning a flow measurement system upstream or downstream of the vent gas valve for measuring the flow of the vent gas when the vent gas valve is opened; and collecting with a microprocessor pressure and flow measurement data from the pressure and the flow measurement systems for determining the amount of water accumulated in the annulus based on the collected pressure and flow measurement data.
    Type: Application
    Filed: January 26, 2009
    Publication date: June 23, 2011
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Lars Nicolas Mangal, Stephane Vannuffelen, Rogerio Tadeu Ramos, Ricardo R. Vasques, Michel V. Berard, Dominique Dion
  • Patent number: 7937223
    Abstract: A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: May 3, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Reinhart Ciglenec, Stephane Vannuffelen, Akira Kamiya, Steven G. Villareal, Tsutomu Yamate
  • Patent number: 7933018
    Abstract: The present invention contemplates implementation of transitory downhole video imaging and/or spectral imaging for the characterization of formation fluid samples in situ, as well as during flow through production tubing, including subsea flow lines, for permanent and/or long term installations. The present invention contemplates various methods and apparatus that facilitate one-time or ongoing downhole fluid characterization by video analysis in real time. The methods and systems may be particularly well suited to permanent and periodic intervention-based operations.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: April 26, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Ahmed Hammami, Toru Terabayashi, Tsutomu Yamate, Terry Sopkow, John Ratulowski, John A. Kerr, Francois Auzerais, Robert J. Schroeder, Jeffrey A. Tarvin, Andrew L. Kurkjian, Laurent Prouvost
  • Patent number: 7929812
    Abstract: Single fiber optical telemetry systems and methods are disclosed. The methods and systems facilitate input and output via a single fiber optic interface. The optical telemetry systems and methods also facilitate faster data transmission rates between surface and downhole equipment in oilfield applications.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: April 19, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Tsutomu Yamate, Bruno Gayral, Soon Seong Chee, Colin Wilson
  • Publication number: 20110061439
    Abstract: Methods of calibrating a fluid analyzer for use in a wellbore are described. An example method of generating calibration data for a fluid analyzer for use in a downhole tool involves lowering a downhole tool including a fluid analyzer to a location in a wellbore, measuring, via the fluid analyzer, a characteristic value of a calibration fluid or a vacuum while the fluid analyzer is at the location, obtaining an expected characteristic value for the calibration fluid or the vacuum at the location, and comparing the measured characteristic value to the expected characteristic value to generate a calibration value for the fluid.
    Type: Application
    Filed: July 3, 2008
    Publication date: March 17, 2011
    Inventors: Chengli Dong, Ricardo R. Vasques, Michael O'Keefe, Peter S. Hegeman, Oliver C. Mullins, Go Fujisawa, Stephane Vannuffelen, Richard Jackson, Ahmad Saputra
  • Patent number: 7832501
    Abstract: An apparatus for determining the nature of the formation at the bottom of a wellbore being drilled with a tubular drill string through which drilling fluid is pumped to return the drilling fluid to the surface via the wellbore, the apparatus comprising a tool body for installation in a drill string with a bore extending there through and an ultraviolet fluorescence detector in a passageway in the tool body, the tool body being configured to receive drilling fluid from inside the drill string and to receive drilling fluid from outside the drill string, wherein the drilling fluid can be directed past the detector so as to enable measurements to be made.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: November 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Fadhel Rezgui, St├ęphane Vannuffelen
  • Patent number: 7750302
    Abstract: A method and apparatus for determining the concentration of organic acids in formation fluids is provided including pumps for pumping fluids from a subterranean formation into the body of a downhole tool and sources for illuminating the flow with infrared radiation to obtain the infrared absorption or a related parameter at one or more wavelengths, and processors for converting the measured absorption into the concentration of the organic acids, using for example a multi-value calibration matrix which relates IR absorption spectral values to concentration measurement under downhole conditions.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: July 6, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Abul K. M. Jamaluddin, Stephane Vannuffelen, Oliver C. Mullins
  • Patent number: 7720323
    Abstract: Subterranean oilfield high-temperature devices configured or designed to facilitate downhole monitoring and high data transmission rates with laser diodes that are configured for operation downhole, within a borehole, at temperatures in excess of 115 degrees centigrade without active cooling.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: May 18, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Tsutomu Yamate, Soon Seong Chee, Stephane Vannuffelen, Colin A. Wilson, Juei Igarashi, Khalid Ouaaba, Koichi Naito
  • Patent number: 7687769
    Abstract: Some principles described herein contemplate implementation of downhole imaging for the characterization of formation fluid samples in situ, as well as during flow through production tubing, including subsea flow lines, for short term investigation, permanent, and/or long term installations. Various methods and apparatus described herein may facilitate downhole testing. For example, some embodiments facilitate multi-dimensional fluorescence spectrum measurement testing downhole and correlating the fluorescence with other oil properties.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: March 30, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Kentaro Indo, Albert Ballard Andrews, Stephane Vannuffelen, Tsutomu Yamate, Toru Terabayashi, Hideki Kinjo, Oliver C. Mullins
  • Patent number: 7687770
    Abstract: Some principles described herein contemplate implementation of downhole imaging for the characterization of formation fluid samples in situ, as well as during flow through production tubing, including subsea flow lines, for short term investigation, permanent, and/or long term installations. Various methods and apparatus described herein may facilitate downhole testing. For example, some embodiments facilitate multi-dimensional fluorescence spectrum measurement testing downhole.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: March 30, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Kentaro Indo, Albert Ballard Andrews, Stephane Vannuffelen, Tsutomu Yamate, Toru Terabayashi, Hideki Kinjo, Oliver C. Mullins
  • Publication number: 20100059221
    Abstract: Subsea apparatus and a method for sampling and analysing fluid from a subsea fluid flowline proximate a subsea well is provided, wherein the apparatus comprises at least one housing located in close proximity to said subsea fluid flowline; at least one fluid sampling device located in the housing in fluid communication with a said subsea fluid flowline for obtaining a sample of fluid from the subsea fluid flowline; at least one fluid processing apparatus located in the housing in fluid communication with said subsea fluid flowline for receiving and processing a portion of the fluid flowing through said fluid flowline or in fluid communication with the fluid sampling device, for processing the sample of fluid obtained from the subsea fluid flowline for analysis, while keeping the sample of fluid at subsea conditions; a fluid analysis device located in the housing, the fluid analysis device being in fluid communication with the fluid processing device and/or with the fluid sampling device, the fluid analysis de
    Type: Application
    Filed: June 3, 2009
    Publication date: March 11, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Stephane Vannuffelen, Ricardo Vasques, Tsutomu Yamate, Akira Kamiya, Kentaro Indo, Gary Oddie, Jonathan Machin, Julie Morgan, Morten Stenhaug, Graham Birkett, Oliver C. Mullins, Lars Mangal, Pascal Panetta
  • Publication number: 20100059669
    Abstract: A method and apparatus for determining the concentration of organic acids in formation fluids is provided including pumps for pumping fluids from a subterranean formation into the body of a downhole tool and sources for illuminating the flow with infrared radiation to obtain the infrared absorption or a related parameter at one or more wavelengths, and processors for converting the measured absorption into the concentration of the organic acids, using for example a multi-value calibration matrix which relates IR absorption spectral values to concentration measurement under downhole conditions.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 11, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Abul K.M. Jamaluddin, Stephane Vannuffelen, Oliver C. Mullins
  • Patent number: 7675030
    Abstract: A method for optically sampling characteristics of subsurface fluids within a wellhole using continuous, non-pulsed light transmitted downhole in optical fibers for both sampling and reference light channels for accurate attenuation compensation.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: March 9, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Khalid Ouaaba, Tsutomu Yamate
  • Publication number: 20100050760
    Abstract: Methods and apparatus for decreasing a density of a downhole fluid are described. An example apparatus to analyze a downhole fluid includes a chamber to decrease a density of at least a portion of a sample of a downhole fluid. Additionally, the example apparatus includes a sensor to measure a pressure of at least the portion of the sample in the chamber. Further, the example apparatus includes a fluid measurement unit to measure a characteristic of at least the portion of the sample based on a relationship between the pressure of at least the portion of the sample in the chamber and a predetermined pressure. Further yet, the example apparatus includes a control unit to determine a parameter of the downhole fluid based on the characteristic.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 4, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: STEPHANE VANNUFFELEN, Tsutomu Yamate
  • Patent number: 7644611
    Abstract: A downhole fluid analysis tool capable of fluid analysis during production logging that includes a phase separator and a plurality of sensors to perform analysis on the fluids collected at a subsurface location in a borehole.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: January 12, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Akira Kamiya, Gary Oddie, Stephane Vannuffelen, Tsutomu Yamate, Oliver C. Mullins, Bhavani Raghuraman, Albert Ballard Andrews, Andrew Carnegie, Chengli Dong, Marian Faur, Christopher Harrison, Kentaro Indo, Li Jiang, Michael O'Keefe
  • Patent number: 7609380
    Abstract: An apparatus for performing real-time analysis of a subterranean formation fluid includes a light source configured to transmit at least a sample signal through a sample of the subterranean formation fluid and a reference signal, at least one photodetector configured to continuously detect the sample and reference signals, and an electronics assembly configured to compensate for drift in the detected sample signal in real-time based on the value of the detected reference signal.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: October 27, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Takeaki Nakayama, Tsutomu Yamate, Toru Terabayashi, Akira Otsuka, Kentaro Indo
  • Publication number: 20090224936
    Abstract: Single fiber optical telemetry systems and methods are disclosed. The methods and systems facilitate input and output via a single fiber optic interface. The optical telemetry systems and methods also facilitate faster data transmission rates between surface and downhole equipment in oilfield applications.
    Type: Application
    Filed: April 2, 2009
    Publication date: September 10, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: STEPHANE VANNUFFELEN, TSUTOMU YAMATE, BRUNO GAYRAL, SOON SEONG CHEE, COLIN WILSON