Patents by Inventor Sergey Egerev

Sergey Egerev 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 acoustic impedance and P-wave anisotropy measurements
    Patent number: 8576659
    Abstract: Measurements of impedance are made using a piezoelectric transducer oriented at different angles to a formation bedding plane. The impedance measurements are then used to estimate the anisotropic velocity of the formation.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: November 5, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Sergey Egerev, Victor Yushin, Oleg Ovchinnikov, Xiao Ming Tang, Douglas J. Patterson, Zarema Dubinsky
  • Method and Apparatus for Acoustic Impedance and P-Wave Anisotropy Measurements
    Publication number: 20100246325
    Abstract: Measurements of impedance are made using a piezoelectric transducer oriented at different angles to a formation bedding plane. The impedance measurements are then used to estimate the anisotropic velocity of the formation.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 30, 2010
    Applicant: Baker Hughes Incorporated
    Inventors: Sergey Egerev, Victor Yushin, Oleg Ovchinnikov, Vladimir Dubinsky, Zarema Dubinsky, Xiao Ming Tang, Douglas J. Patterson
  • Acoustic isolator for downhole applications
    Publication number: 20060260864
    Abstract: A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined frequency range. The mass irregularities may be rings secured to the inner surface of the collar by neck pieces, extending outwardly from the outer circumference of the ring. The mass irregularities may be made of steel or tungsten and are between six and ten in number. The spacing of the irregularities may lie between twelve and fourteen centimeters. A center pipe may be included to isolate the irregularities from the fluid flow associated with the drilling operation. The pipe may be of a soft material such as rubber to reduce transfer of acoustic noise along the drill string. The irregularities may be in an oil based fluid with the pipe fitting closely in the center of the rings.
    Type: Application
    Filed: April 25, 2006
    Publication date: November 23, 2006
    Applicant: Baker Hughes Incorporated
    Inventors: Sergey Egerev, Vladimir Belov, Vladimir Dubinsky, Alexei Bolshakov, Victor Tiutekin, Victor Yushin
  • Acoustic isolator downhole applications
    Patent number: 7032707
    Abstract: A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined frequency range. The mass irregularities may be rings secured to the inner surface of the collar by neck pieces, extending outwardly from the outer circumference of the ring. The mass irregularities may be made of steel or tungsten and are between six and ten in number. The spacing of the irregularities may lie between twelve and fourteen centimeters. A center pipe may be included to isolate the irregularities from the fluid flow associated with the drilling operation. The pipe may be of a soft material such as rubber to reduce transfer of acoustic noise along the drill string. The irregularities may be in an oil based fluid with the pipe fitting closely in the center of the rings.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: April 25, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Sergey Egerev, Vladimir Belov, Vladimir Dubinsky, Alexei Bolshakov, Victor Tiutekin, Victor Yushin
  • Acoustic isolator for downhole applications
    Publication number: 20040104068
    Abstract: A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined frequency range. The mass irregularities may be rings secured to the inner surface of the collar by neck pieces, extending outwardly from the outer circumference of the ring. The mass irregularities may be made of steel or tungsten and are between six and ten in number. The spacing of the irregularities may lie between twelve and fourteen centimeters. A center pipe may be included to isolate the irregularities from the fluid flow associated with the drilling operation. The pipe may be of a soft material such as rubber to reduce transfer of acoustic noise along the drill string. The irregularities may be in an oil based fluid with the pipe fitting closely in the center of the rings.
    Type: Application
    Filed: July 1, 2003
    Publication date: June 3, 2004
    Applicant: Baker Hughes Incorporated
    Inventors: Sergey Egerev, Vladimir Belov, Vladimir Dubinsky, Alexei Bolshakov, Victor Tiutekin, Victor Yushin
  • Acoustic isolator for downhole applications
    Patent number: 6615949
    Abstract: A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined frequency range. The mass irregularities may be rings secured to the inner surface of the collar by neck pieces, extending outwardly from the outer circumference of the ring. The mass irregularities may be made of steel or tungsten and are between six and ten in number. The spacing of the irregularities may lie between twelve and fourteen centimeters. A center pipe may be included to isolate the irregularities from the fluid flow associated with the drilling operation. The pipe may be of a soft material such as rubber to reduce transfer of acoustic noise along the drill string. The irregularities may be in an oil based fluid with the pipe fitting closely in the center of the rings.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: September 9, 2003
    Assignee: Baker Hughes Incorporated
    Inventors: Sergey Egerev, Vladimir Belov, Vladimir Dubinsky, Alexei Bolshakov, Victor Tiutekin, Victor Yushin