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).

  • Publication number: 20090166085
    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: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: REINHART CIGLENEC, STEPHANE VANNUFFELEN, AKIRA KAMIYA, STEVEN G. VILLAREAL, TSUTOMU YAMATE
  • Patent number: 7520160
    Abstract: An electrochemical sensor for measuring contents of a fluid or gas at high pressure and/or high temperature, for use, for example, in a wellbore for hydrocarbon applications, is provided. The sensor includes: a bulkhead-like electrode assembly including a cylindrical housing and a cylindrical electrode structure. The cylindrical electrode structure includes a cylindrical conductive pin extending from a high pressure region to a low pressure region and an electrode connected to one end of the pin at the high pressure region and having an electrode surface for exposure to a flow path of the fluid or gas in the high pressure region. At least a part of the surface of the pin is protected from direct contact with the fluid or the gas by an insulating coating impermeable to the fluid or gas. The pin may include an alternating pattern of protruding and receded portions.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: April 21, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Michael M Toribio, Akira Kamiya, Stephane Vannuffelen, Noriyuki Matsumoto, Jimmy Lawrence
  • Publication number: 20090095529
    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: Application
    Filed: September 28, 2007
    Publication date: April 16, 2009
    Inventors: Fadhel Rezgui, Stephane Vannuffelen
  • Publication number: 20090090176
    Abstract: An electrochemical sensor for measuring contents of a fluid or gas at high pressure and/or high temperature, for use, for example, in a wellbore for hydrocarbon applications, is provided. The sensor includes: a bulkhead-like electrode assembly including a cylindrical housing and a cylindrical electrode structure. The cylindrical electrode structure includes a cylindrical conductive pin extending from a high pressure region to a low pressure region and an electrode connected to one end of the pin at the high pressure region and having an electrode surface for exposure to a flow path of the fluid or gas in the high pressure region. At least a part of the surface of the pin is protected from direct contact with the fluid or the gas by an insulating coating impermeable to the fluid or gas. The pin may include an alternating pattern of protruding and receded portions.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Applicant: Schlumberger Technology Corporation
    Inventors: MICHAEL M. TORIBIO, AKIRA KAMIYA, STEPHANE VANNUFFELEN, NORIYUKI MATSUMOTO, JIMMY LAWRENCE
  • Patent number: 7515774
    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: December 20, 2004
    Date of Patent: April 7, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Tsutomu Yamate, Bruno Gayral, Soon Seong Chee, Colin Wilson
  • Patent number: 7511813
    Abstract: Spectral analysis system for downhole applications is provided utilizing an inorganic replica-type grating that is configured to operate as a diffractive element that provides broad spectral coverage in high temperature downhole environments.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: March 31, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Kentaro Indo, Toru Terabayashi, Tsutomu Yamate
  • Publication number: 20090038794
    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: Application
    Filed: September 29, 2008
    Publication date: February 12, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: TSUTOMU YAMATE, SOON SEONG CHEE, STEPHANE VANNUFFELEN, COLIN A. WILSON, JUEI IGARASHI, KHALID OUAABA, KOICHI NAITO
  • Publication number: 20080173804
    Abstract: Some principles described herein comtemplate 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: Application
    Filed: January 19, 2007
    Publication date: July 24, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: KENTARO INDO, ALBERT BALLARD ANDREWS, STEPHANE VANNUFFELEN, TSUTOMU YAMATE, TORU TERABAYASHI, HIDEKI KINJO, OLIVER C. MULLINS
  • Publication number: 20080173805
    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: Application
    Filed: January 19, 2007
    Publication date: July 24, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: KENTARO INDO, ALBERT BALLARD ANDREWS, STEPHANE VANNUFFELEN, TSUTOMU YAMATE, TORU TERABAYASHI, HIDEKI KINJO, OLIVER C. MULLINS
  • Patent number: 7379180
    Abstract: A fluid analysis system for use downhole comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. An output light signal from the sample cell is then routed to one or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the light from the light sources can be routed directly to the one or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: May 27, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Akira Kamiya, Masaki Miyashita, Kentaro Indo, Reinhart Ciglenec, Tsutomu Yamate
  • Publication number: 20080087078
    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: Application
    Filed: September 13, 2007
    Publication date: April 17, 2008
    Applicant: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Khalid Ouaaba, Tsutomu Yamate
  • Publication number: 20080066538
    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: Application
    Filed: September 13, 2007
    Publication date: March 20, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: AKIRA KAMIYA, GARY ODDIE, STEPHANE VANNUFFELEN, TSUTOMU YAMATE, OLIVER MULLINS, BHAVANI RAGHURAMAN, ALBERT ANDREWS, ANDREW CARNEGIE, CHENGLI DONG, MARIAN FAUR, CHRISTOPHER HARRISON, KENTARO INDO, LI JIANG, MICHAEL O'KEEFE
  • Patent number: 7336356
    Abstract: A downhole fluid analysis system comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. A light signal output from the sample cell is then routed to two or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the input light can be routed directly to the two or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: February 26, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephane Vannuffelen, Kentaro Indo, Go Fujisawa, Toru Terabayashi, Tsutomu Yamate
  • Publication number: 20070171414
    Abstract: Spectral analysis system for downhole applications is provided utilizing an inorganic replica-type grating that is configured to operate as a diffractive element that provides broad spectral coverage in high temperature downhole environments.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 26, 2007
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Stephane Vannuffelen, Kentaro Indo, Toru Terabayashi, Tsutomu Yamate
  • Publication number: 20070171413
    Abstract: A fluid analysis system for use downhole comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. An output light signal from the sample cell is then routed to one or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the light from the light sources can be routed directly to the one or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 26, 2007
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Stephane Vannuffelen, Akira Kamiya, Masaki Miyashita, Kentaro Indo, Reinhart Ciglenec, Tsutomu Yamate
  • Publication number: 20070171412
    Abstract: A downhole fluid analysis system comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. A light signal output from the sample cell is then routed to two or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the input light can be routed directly to the two or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 26, 2007
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Stephane Vannuffelen, Kentaro Indo, Go Fujisawa, Toru Terabayashi, Tsutomu Yamate
  • Publication number: 20070109537
    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: Application
    Filed: November 14, 2005
    Publication date: May 17, 2007
    Inventors: Stephane Vannuffelen, Takeaki Nakayama, Tsutomu Yamate, Toru Terabayashi, Akira Otsuka, Kentaro Indo
  • Publication number: 20070035736
    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: Application
    Filed: August 15, 2005
    Publication date: February 15, 2007
    Inventors: Stephane Vannuffelen, Ahmed Hammami, Toru Terabayashi, Tsutomu Yamate, Terry Sopkow, John Ratulowski, John Kerr, Francois Auzerais, Robert Schroeder, Jeffrey A. Tarvin, Andrew L. Kurkjian, Laurent Prouvost
  • Publication number: 20060152383
    Abstract: Hybrid electrical-optical telemetry systems and methods are disclosed. The methods and systems facilitate faster data transmission rates between the surface and downhole tools and sensors. The methods and systems may also include a downhole electrical bus for inter-tool and intra-tool communication to facilitate limited changes to existing downhole equipment. Some embodiments of the hybrid electrical-optical telemetry system include a light source at the surface and a downhole modulator. Some embodiments also include redundant, selectable optical systems. The methods and systems may operate via a single optical input/output cable.
    Type: Application
    Filed: December 28, 2004
    Publication date: July 13, 2006
    Inventors: Tsutomu Yamate, Stephane Vannuffelen, Bruno Gayral, Soon Chee, Colin Wilson
  • Publication number: 20060133711
    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: December 20, 2004
    Publication date: June 22, 2006
    Inventors: Stephane Vannuffelen, Tsutomu Yamate, Bruno Gayral, Soon Chee, Colin Wilson