| Patent | Date |
|---|
Universal bottomhole assembly node (UBHAN) providing communications to and from rotary steerable systems (RSS) and real time azimuthal resistivity imaging for geosteering and pressure while drilling (FWD) for well control
Grant 11,326,437 - Tchakarov , et al. May 10, 2 | 2022-05-10 |
Modular Resistivity Sensor For Downhole Measurement While Drilling
App 20210262344 - Wang; Tsili ; et al. | 2021-08-26 |
Boundary tracking control module for rotary steerable systems
Grant 11,098,572 - Tchakarov , et al. August 24, 2 | 2021-08-24 |
Autonomous Logging-while-drilling Assembly
App 20210079782 - Tchakarov; Borislav J. | 2021-03-18 |
Universal Bottomhole Assembly Node (ubhan) Providing Communications To And From Rotary Steerable Systems (rss) And Real Time Azimuthal Resistivity Imaging For Geosteering And Pressure While Drilling (pwd) For Well Control
App 20210032971 - Tchakarov; Borislav J. ; et al. | 2021-02-04 |
Boundary Tracking Control Module For Rotary Steerable Systems
App 20200182037 - Tchakarov; Borislav J. ; et al. | 2020-06-11 |
Boundary tracking control module for rotary steerable systems
Grant 10,648,319 - Tchakarov | 2020-05-12 |
Modular Resistivity Sensor For Downhole Measurement While Drilling
App 20190277136 - Wang; Tsili ; et al. | 2019-09-12 |
Modular resistivity sensor for downhole measurement while drilling
Grant 10,337,322 - Wang , et al. | 2019-07-02 |
Boundary Tracking Control Module For Rotary Steerable Systems
App 20190010798 - Tchakarov; Borislav J. | 2019-01-10 |
Boundary Tracking Control Module For Rotary Steerable Systems
App 20180258751 - Tchakarov; Borislav J. ; et al. | 2018-09-13 |
Boundary tracking control module for rotary steerable systems
Grant 10,072,490 - Tchakarov , et al. September 11, 2 | 2018-09-11 |
Modular Resistivity Sensor for Downhole Measurement While Drilling
App 20180024266 - Wang; Tsili ; et al. | 2018-01-25 |
Apparatus and methods for communicating downhole data
Grant 9,851,465 - Wang , et al. December 26, 2 | 2017-12-26 |
Modular Resistivity Sensor for Downhole Measurement While Drilling
App 20170191364 - Wang; Tsili ; et al. | 2017-07-06 |
Modular resistivity sensor for downhole measurement while drilling
Grant 9,638,819 - Wang , et al. May 2, 2 | 2017-05-02 |
Downhole closed-loop geosteering methodology
Grant 9,273,517 - Tchakarov , et al. March 1, 2 | 2016-03-01 |
Modular Resistivity Sensor For Downhole Measurement While Drilling
App 20140368200 - WANG; Tsili ; et al. | 2014-12-18 |
Apparatus And Methods For Communicating Downhole Data
App 20140368350 - WANG; Tsili ; et al. | 2014-12-18 |
Drilling system for making LWD measurements ahead of the bit
Grant 8,570,045 - Tchakarov , et al. October 29, 2 | 2013-10-29 |
In-situ formation strength testing with coring
Grant 8,171,990 - Tchakarov , et al. May 8, 2 | 2012-05-08 |
In-situ formation strength testing
Grant 8,141,419 - Tchakarov , et al. March 27, 2 | 2012-03-27 |
Downhole Closed-loop Geosteering Methodology
App 20120046868 - Tchakarov; Borislav J. ; et al. | 2012-02-23 |
Vacuum insulated dewar flask
Grant 7,921,913 - Tchakarov , et al. April 12, 2 | 2011-04-12 |
Drilling System for Making LWD Measurements Ahead of the Bit
App 20110057656 - Tchakarov; Borislav J. ; et al. | 2011-03-10 |
Formation testing and sampling tool including a coring device
Grant 7,762,328 - Tchakarov July 27, 2 | 2010-07-27 |
High resolution capacitance high conductivity fluid sensor
Grant 7,716,978 - Tchakarov , et al. May 18, 2 | 2010-05-18 |
Variable positioning deep cutting rotary coring tool with expandable bit
Grant 7,673,704 - Phan , et al. March 9, 2 | 2010-03-09 |
In-situ Formation Strength Testing With Coring
App 20100051347 - Tchakarov; Borislav J. ; et al. | 2010-03-04 |
Side entry leak protection for downhole tools
Grant 7,649,357 - Hunziker , et al. January 19, 2 | 2010-01-19 |
In-situ Formation Strength Testing With Formation Sampling
App 20090164128 - Tchakarov; Borislav J. ; et al. | 2009-06-25 |
In-situ Formation Strength Testing
App 20090133486 - Tchakarov; Borislav J. ; et al. | 2009-05-28 |
High Resolution Capacitance High Conductivity Fluid Sensor
App 20090107666 - Tchakarov; Borislav J. ; et al. | 2009-04-30 |
Self cleaning coring bit
Grant 7,373,994 - Tchakarov , et al. May 20, 2 | 2008-05-20 |
Variable positioning deep cutting rotary coring tool with expandable bit
App 20080078582 - Phan; Quan V. ; et al. | 2008-04-03 |
Formation testing and sampling tool including a coring device
App 20080078241 - Tchakarov; Borislav J. | 2008-04-03 |
Vacuum insulated dewar flask
App 20070095543 - Tchakarov; Borislav J. ; et al. | 2007-05-03 |
Side entry leak protection for downhole tools
App 20060273799 - Hunziker; James C. ; et al. | 2006-12-07 |
Self cleaning coring bit
App 20060076162 - Tchakarov; Borislav J. ; et al. | 2006-04-13 |
Method and apparatus for a quadrupole transmitter for directionally sensitive induction tool
Grant 6,937,022 - Itskovich , et al. August 30, 2 | 2005-08-30 |
Method and apparatus for a quadrupole transmitter for directionally sensitive induction tool
Grant 6,903,553 - Itskovich , et al. June 7, 2 | 2005-06-07 |
Method and apparatus for a quadrupole transmitter for directionally sensitive induction tool
App 20040046560 - Itskovich, Gregory ; et al. | 2004-03-11 |
Method and apparatus for a quadrupole transmitter for directionally sensitive induction tool
App 20040046561 - Itskovich, Gregory ; et al. | 2004-03-11 |
Down hole gas analyzer method and apparatus
Grant 6,627,873 - Tchakarov , et al. September 30, 2 | 2003-09-30 |
Down hole gas analyzer method and apparatus
App 20020043620 - Tchakarov, Borislav J. ; et al. | 2002-04-18 |
Downhole carbon dioxide gas analyzer
Grant 6,218,662 - Tchakarov , et al. April 17, 2 | 2001-04-17 |
Pulser
Grant 6,002,643 - Tchakarov , et al. December 14, 1 | 1999-12-14 |
Centralizers for a downhole tool
Grant 5,934,378 - Tchakarov August 10, 1 | 1999-08-10 |
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