Patents by Inventor Sergey V. Efremov

Sergey V. Efremov 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).

  • Measurement-while-drilling assembly using real-time toolface oriented measurements
    Patent number: 7195062
    Abstract: This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes directional formation evaluation devices on a rotating assembly in conjunction with toolface orientation sensors. The data from the toolface orientation sensors are analyzed by a processor and toolface angle measurements are determined at defined intervals. Formation evaluation sensors operate substantially independently of the toolface orientation sensors and measurements of the formation evaluation sensors are analyzed in combination with the determined toolface angle to obtain formation parameters.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: March 27, 2007
    Assignee: Baker Hughes Incorporated
    Inventors: Paul G. Cairns, Sergey V. Efremov, David M. Schneider, Sassan Dehlavi, Robert A. Estes, Samuel R. Bell
  • Method of processing data from a dual detector LWD density logging instrument coupled with an acoustic standoff measurement
    Patent number: 7129477
    Abstract: A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An acoustic caliper is used for making standoff measurements of the NaI detectors. Measurements made by the detectors are partitioned into standoff bins. An adaptive spine and rib method uses the standoff measurements to obtain density estimates. The method of the invention may also be used with neutron porosity logging devices.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: October 31, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: David M. Schneider, Sergey V. Efremov, Matthew J. Sale
  • Measurement-while-drilling assembly using real-time toolface oriented measurements
    Patent number: 7000700
    Abstract: This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes directional formation evaluation devices on a rotating assembly in conjunction with toolface orientation sensors. The data from the toolface orientation sensors are analyzed by a processor and toolface angle measurements are determined at defined intervals. Formation evaluation sensors operate substantially independently of the toolface orientation sensors and measurements of the formation evaluation sensors are analyzed in combination with the determined toolface angle to obtain formation parameters.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: February 21, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Paul G. Cairns, Sergey V. Efremov, David M. Schneider, Sassan Dehlavi, Robert A. Estes, Samuel R. Bell
  • Measurement-while-drilling assembly using real-time toolface oriented measurements
    Publication number: 20040079526
    Abstract: This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes directional formation evaluation devices on a rotating assembly in conjunction with toolface orientation sensors. The data from the toolface orientation sensors are analyzed by a processor and toolface angle measurements are determined at defined intervals. Formation evaluation sensors operate substantially independently of the toolface orientation sensors and measurements of the formation evaluation sensors are analyzed in combination with the determined toolface angle to obtain formation parameters.
    Type: Application
    Filed: July 29, 2003
    Publication date: April 29, 2004
    Applicant: Baker Hughes Incorporated
    Inventors: Paul G. Cairns, Sergey V. Efremov, David M. Schneider, Sassan Dehlavi, Robert A. Estes, Samuel R. Bell
  • Method of processing data from a dual detector LWD density logging instrument coupled with an acoustic standoff measurement
    Publication number: 20040021066
    Abstract: A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An acoustic caliper is used for making standoff measurements of the NaI detectors. Measurements made by the detectors are partitioned into standoff bins. An adaptive spine and rib method uses the standoff measurements to obtain density estimates. The method of the invention may also be used with neutron porosity logging devices.
    Type: Application
    Filed: March 27, 2003
    Publication date: February 5, 2004
    Applicant: Baker Hughes Incorporated
    Inventors: David M. Schneider, Sergey V. Efremov, Matthew J. Sale