Patents by Inventor Toru Terabayashi

Toru Terabayashi 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).

  • Methods and apparatus for downhole fluids analysis
    Patent number: 6476384
    Abstract: A method of determining GOR comprising subjecting a fluid to spectroscopic analysis at a first wavelength sensitive to gas and a second wavelength sensitive to oil, determining a response matrix for the contribution of gas at the first and second wavelengths and the contribution of oil at the first and second wavelengths, determining a signal response vector and the two wavelengths, calculating a mass fraction vector from the response matrix and the signal response vector and using the mass fraction vector to determine GOR.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 5, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Oliver C. Mullins, Toru Terabayashi, Kazuyoshi Kegasawa, Ikko Okuda
  • Method of detecting carbon dioxide in a downhole environment
    Patent number: 6465775
    Abstract: Methods of detecting carbon dioxide in downhole environments are provided. Near-infrared light is transmitted through a gas downhole. Indications of near-infrared absorptions are detected from the gas and used to determine the presence of carbon dioxide.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: October 15, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Oliver C. Mullins, Philip A. Rabbito, Lawrence E. McGowan, Toru Terabayashi, Kazuyoshi Kegasawa
  • Method of detecting carbon dioxide in a downhole environment
    Publication number: 20020074489
    Abstract: Methods of detecting carbon dioxide in downhole environments are provided. Near-infrared light is transmitted through a gas downhole. Indications of near-infrared absorptions are detected from the gas and used to determine the presence of carbon dioxide.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Inventors: Oliver C. Mullins, Philip A. Rabbito, Lawrence E. McGowan, Toru Terabayashi, Kazuyoshi Kegasawa