Patents by Inventor Khalid Ouaaba

Khalid Ouaaba 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).

  • Method, apparatus and system for safe mode telemetry system
    Patent number: 10087748
    Abstract: A method, apparatus and system for safe mode telemetry are provide. The method may include detecting a failure of an AC power supply, switching the AC power supply to a DC power supply, booting with a safe mode telemetry system by a control unit, and capturing downhole data for recording into a memory. The apparatus may include a telemetry cartridge, a control unit to detect a failure of an AC power supply, a DC power supply, and a switching device to change from the AC power supply to the DC power supply based on the control unit's detection of the failure in the AC power supply. The DC power supply of the apparatus may be used to power the telemetry cartridge after the detection of the failure. The system may further include a surface data acquisition unit and a downhole tool including the apparatus.
    Type: Grant
    Filed: December 14, 2014
    Date of Patent: October 2, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Nalin Weerasinghe, Khalid Ouaaba, Maduranga Liyanage
  • Method, Apparatus and System for Safe Mode Telemetry System
    Publication number: 20150167451
    Abstract: A method, apparatus and system for safe mode telemetry are provide. The method may include detecting a failure of an AC power supply, switching the AC power supply to a DC power supply, booting with a safe mode telemetry system by a control unit, and capturing downhole data for recording into a memory. The apparatus may include a telemetry cartridge, a control unit to detect a failure of an AC power supply, a DC power supply, and a switching device to change from the AC power supply to the DC power supply based on the control unit's detection of the failure in the AC power supply. The DC power supply of the apparatus may be used to power the telemetry cartridge after the detection of the failure. The system may further include a surface data acquisition unit and a downhole tool including the apparatus.
    Type: Application
    Filed: December 14, 2014
    Publication date: June 18, 2015
    Inventors: Nalin Weerasinghe, Khalid Ouaaba, Maduranga Liyanage
  • High-temperature downhole devices
    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
  • Logging system and method for in-situ fluids sensing through optical fiber with attenuation compensation
    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
  • HIGH-TEMPERATURE DOWNHOLE DEVICES
    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
  • Logging System and Method for In-Situ Fluids Sensing Through Optical Fiber With Attenuation Compensation
    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