Patents by Inventor Boris Tchakarov

Boris Tchakarov 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 and apparatus for directional resistivity measurement while drilling
    Patent number: 7414407
    Abstract: A resistivity tool has a body with at lest one pair of grooves on its exterior oriented orthogonal to the tool axis. A coil antenna is oriented orthogonal to the grooves in a hole intersecting the grooves and oriented orthogonal to the tool axis. The antenna and an antenna core define a plurality of small antenna loops.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: August 19, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Tsili Wang, Leonty Tabarovsky, Boris Tchakarov, John Signorelli, Sheng Fang
  • Method and apparatus for directional resistivity measurement while drilling
    Publication number: 20060186888
    Abstract: A measurement-while-drilling or logging while drilling method and apparatus for determining the azimuth of providing magnetic field in a remote formation layer in the vicinity of a down hole resistivity tool. A cross-component magnetic field with substantially orthogonal transmitter and receiver coils is provided. The coil planes are either substantially orthogonal (coaxial coils) or parallel (transverse coils) with respect to, the longitudinal axis of the tool body. The coils are placed on the tool body having a external surface and a plurality of grooves are cut in the external surface of the tool body and oriented substantially horizontally with respect to the longitudinal axis of the tool body for the coils and oriented vertically with respect to the longitudinal axis of the tool body for the coaxial coils. A transverse and coaxial coil are placed in the grooves for transmission or reception of a cross-component transverse magnetic field.
    Type: Application
    Filed: April 5, 2006
    Publication date: August 24, 2006
    Inventors: Tsili Wang, Leonty Tabarovsky, Boris Tchakarov, John Signorelli, Sheng Fang
  • Method and apparatus for directional resistivity measurement while drilling
    Patent number: 7057392
    Abstract: A resistivity tool has a body with at lest one pair of grooves on its exterior oriented orthogonal to the tool axis. A coil antenna is oriented orthogonal to the grooves in a hole intersecting the grooves and oriented orthogonal to the tool axis. The antenna and an antenna core define a plurality of small antenna loops.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: June 6, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Tsili Wang, Leonty Tabarovsky, Boris Tchakarov, John Signorelli, Sheng Fang
  • Method and apparatus for directional resistivity measurement while drilling
    Publication number: 20040113626
    Abstract: A measurement-while-drilling or logging while drilling method and apparatus for determining the azimuth of providing magnetic field in a remote formation layer in the vicinity of a down hole resistivity tool. A cross-component magnetic field with substantially orthogonal transmitter and receiver coils is provided. The coil planes are either substantially orthogonal (coaxial coils) or parallel (transverse coils) with respect to, the longitudinal axis of the tool body. The coils are placed on the tool body having a external surface and a plurality of grooves are cut in the external surface of the tool body and oriented substantially horizontally with respect to the longitudinal axis of the tool body for the coils and oriented vertically with respect to the longitudinal axis of the tool body for the coaxial coils. A transverse and coaxial coil are placed in the grooves for transmission or reception of a cross-component transverse magnetic field.
    Type: Application
    Filed: September 5, 2003
    Publication date: June 17, 2004
    Applicant: Baker Hughes, Inc.
    Inventors: Tsili Wang, Leonty Tabarovsky, Boris Tchakarov, John Signorelli, Sheng Fang