Patents by Inventor Michel Gouilloud

Michel Gouilloud 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: 5197038
    Abstract: Methods are provided which utilize a sonic tool for quantitatively determining parameters of a velocity profile of an altered zone in a rock formation traversed by a borehole. Synthetic amplitude information for the formation is generated by a computer model, by providing the computer with a proposed velocity profile for the formation, including values for parameters such as the radius of the altered zone and the acoustic velocities in the altered zone. The synthetic amplitude information is then compared with amplitude information (e.g. peak or total energy) of a compressional headwave as measured by the array sonic tool. If the comparison provides differences exceeding predetermined thresholds, the values for the parameters of the model are adjusted according to a least squares fit procedure until suitable values are found. The suitable values are then taken as the parameter values.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: March 23, 1993
    Assignee: Schlumberger Technology Corporation
    Inventors: Shu K. Chang, Michel Gouilloud
  • Patent number: 4692707
    Abstract: A wall engaging pad for well logging comprises a face portion of electrically conductive material within which are disposed three or more current electrodes. The survey current emitted from the current electrodes is differently focussed. A suitable current return is furnished. A plurality of individual measurements having respective graduated depths of investigation are obtained and suitably processed to yield resistivity measurements. The body of the sonde carrying the pad may be used to enhance the focussing of the survey current.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: September 8, 1987
    Assignee: Schlumberger Technology Corporation
    Inventors: Stanley Locke, Michel Gouilloud
  • Patent number: 4535632
    Abstract: Pressure sensing diaphragms comprise a cylindrical or spherical crystalline member in which an internal cylindrical or spherical chamber is provided. In the internally loaded embodiments, a fluid is introduced into the chamber and the pressure exerted by the fluid causes generally tensile stress in the region of the diaphragm generally about the chamber. In the externally loaded embodiments, the diaphragm is immersed within the fluid and the pressure exerted by the fluid causes generally compressive stress in the region of the diaphragm generally about the chamber. For each of the embodiments, the stresses arising cause certain mechanical and electrical properties of the crystalline material to change. The change in these properties is detected by observing the frequency behavior of one or more oscillators whose frequencies of operation are controlled by respective surface acoustic wave devices provided in the regions of elastic deformation.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: August 20, 1985
    Assignee: Schlumberger Technology Corporation
    Inventors: Bikash K. Sinha, Michel Gouilloud
  • Patent number: 4535631
    Abstract: Pressure sensing diaphragms comprise a cylindrical or spherical crystalline member in which an internal cylindrical or spherical chamber is provided. In the internally loaded embodiments, a fluid is introduced into the chamber and the pressure exerted by the fluid causes generally tensile stress in the region of the diaphragm generally about the chamber. In the externally loaded embodiments, the diaphragm is immersed within the fluid and the pressure exerted by the fluid causes generally compressive stress in the region of the diaphragm generally about the chamber. For each of the embodiments, the stresses arising cause certain mechanical and electrical properties of the crystalline material to change. The change in these properties is detected by observing the frequency behavior of one or more oscillators whose frequencies of operation are controlled by respective surface acoustic wave devices provided in the regions of elastic deformation.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: August 20, 1985
    Assignee: Schlumberger Technology Corporation
    Inventors: Bikash K. Sinha, Michel Gouilloud
  • Patent number: 4534223
    Abstract: Pressure sensing diaphragms comprise a cylindrical or spherical crystalline member in which an internal cylindrical or spherical chamber is provided. In the internally loaded embodiments, a fluid is introduced into the chamber and the pressure exerted by the fluid causes generally tensile stress in the region of the diaphragm generally about the chamber. In the externally loaded embodiments, the diaphragm is immersed within the fluid and the pressure exerted by the fluid causes generally compressive stress in the region of the diaphragm generally about the chamber. For each of the embodiments, the stresses arising cause certain mechanical and electrical properties of the crystalline material to change. The change in these properties is detected by observing the frequency behavior of one or more oscillators whose frequencies of operation are controlled by respective surface acoustic wave devices provided in the regions of elastic deformation.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: August 13, 1985
    Assignee: Schlumberger Technology Corporation
    Inventors: Bikash K. Sinha, Michel Gouilloud
  • Patent number: 4512198
    Abstract: Pressure sensing diaphragms comprise a cylindrical or spherical crystalline member in which an internal cylindrical or spherical chamber is provided. In the internally loaded embodiments, a fluid is introduced into the chamber and the pressure exerted by the fluid causes generally tensile stress in the region of the diaphragm generally about the chamber. In the externally loaded embodiments, the diaphragm is immersed within the fluid and the pressure exerted by the fluid causes generally compressive stress in the region of the diaphragm generally about the chamber. For each of the embodiments, the stresses arising cause certain mechanical and electrical properties of the crystalline material to change. The change in these properties is detected by observing the frequency behavior of one or more oscillators whose frequencies of operation are controlled by respective surface acoustic wave devices provided in the regions of elastic deformation.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: April 23, 1985
    Assignee: Schlumberger Technology Corporation
    Inventors: Bikash K. Sinha, Michel Gouilloud