Patent | Date |
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Self-calibrated method of determining borehole fluid acoustic properties Grant 11,359,488 - Han , et al. June 14, 2 | 2022-06-14 |
Encapsulated phased array segment for downhole applications Grant 10,408,053 - Breaux , et al. Sept | 2019-09-10 |
Encapsulated Phased Array Segment For Downhole Applications App 20170335685 - Breaux; Brian ;   et al. | 2017-11-23 |
Devices and methods for downhole acoustic imaging Grant 9,720,121 - Zhou , et al. August 1, 2 | 2017-08-01 |
Devices and methods for downhole acoustic imaging Grant 9,567,846 - Leggett, III , et al. February 14, 2 | 2017-02-14 |
Devices And Methods For Downhole Acoustic Imaging App 20160216393 - Zhou; Quming ;   et al. | 2016-07-28 |
Pipelined pulse-echo scheme for an acoustic image tool for use downhole Grant 9,103,196 - Zhao , et al. August 11, 2 | 2015-08-11 |
Devices And Methods For Downhole Acoustic Imaging App 20150204993 - Leggett, III; James V. ;   et al. | 2015-07-23 |
Acoustic transducers with dynamic frequency range Grant 9,063,242 - Swett , et al. June 23, 2 | 2015-06-23 |
Acoustic Transducers With Dynamic Frequency Range App 20120090837 - Swett; Dwight W. ;   et al. | 2012-04-19 |
Pipelined Pulse-Echo Scheme for an Acoustic Image Tool for Use Downhole App 20120033528 - Zhao; Jinsong ;   et al. | 2012-02-09 |
Multi-resolution borehole profiling Grant 7,966,874 - Hassan , et al. June 28, 2 | 2011-06-28 |
Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications Grant 7,652,951 - Leggett, III , et al. January 26, 2 | 2010-01-26 |
Methods And Apparatus For High-speed Telemetry While Drilling App 20090195408 - Patterson; Douglas J. ;   et al. | 2009-08-06 |
Multi-Resolution Borehole Profiling App 20080307875 - Hassan; Gamal A. ;   et al. | 2008-12-18 |
Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications Grant 7,463,551 - Leggett, III , et al. December 9, 2 | 2008-12-09 |
Method of Generating Directional Low Frequency Acoustic Signals and Reflected Signal Detection Enhancements for Seismic While Drilling Applications App 20080130409 - Leggett III; James V. ;   et al. | 2008-06-05 |
Methods of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications Grant 7,301,852 - Leggett, III , et al. November 27, 2 | 2007-11-27 |
Method and apparatus for LWD shear velocity measurement Grant 6,985,086 - Tang , et al. January 10, 2 | 2006-01-10 |
Method and apparatus for LWD shear velocity measurement Grant 6,930,616 - Tang , et al. August 16, 2 | 2005-08-16 |
Method and apparatus for generating acoustic signals for LWD shear velocity measurement Grant 6,909,666 - Dubinsky , et al. June 21, 2 | 2005-06-21 |
Method and apparatus for LWD shear velocity measurement Grant 6,850,168 - Tang , et al. February 1, 2 | 2005-02-01 |
Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications Grant 6,769,497 - Dubinsky , et al. August 3, 2 | 2004-08-03 |
Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers Grant 6,614,360 - Leggett, III , et al. September 2, 2 | 2003-09-02 |
Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries Grant 6,581,010 - Dubinsky , et al. June 17, 2 | 2003-06-17 |
Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries Grant 6,427,124 - Dubinsky , et al. July 30, 2 | 2002-07-30 |
Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto Grant 6,272,434 - Wisler , et al. August 7, 2 | 2001-08-07 |
Method of obtaining improved geophysical information about earth formations Grant 6,253,848 - Reimers , et al. July 3, 2 | 2001-07-03 |
Closed loop drilling system Grant 6,233,524 - Harrell , et al. May 15, 2 | 2001-05-15 |
Method of obtaining improved geophysical information about earth formations Grant 6,209,640 - Reimers , et al. April 3, 2 | 2001-04-03 |
Method and apparatus for communicating data in a wellbore and for detecting the influx of gas Grant 6,208,586 - Rorden , et al. March 27, 2 | 2001-03-27 |
Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction Grant 6,088,294 - Leggett, III , et al. July 11, 2 | 2000-07-11 |
Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers Grant 6,084,826 - Leggett, III July 4, 2 | 2000-07-04 |
Method of obtaining improved geophysical information about earth formations Grant 6,065,538 - Reimers , et al. May 23, 2 | 2000-05-23 |
Apparatus and method for performing imaging and downhole operations at a work site in wellbores Grant 6,041,860 - Nazzal , et al. March 28, 2 | 2000-03-28 |
Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries Grant 6,023,443 - Dubinsky , et al. February 8, 2 | 2000-02-08 |
Drilling system utilizing downhole dysfunctions for determining corrective actions and simulating drilling conditions Grant 6,021,377 - Dubinsky , et al. February 1, 2 | 2000-02-01 |
Method and apparatus for communicating data in a wellbore and for detecting the influx of gas Grant 5,850,369 - Rorden , et al. December 15, 1 | 1998-12-15 |
Closed loop drilling system Grant 5,842,149 - Harrell , et al. November 24, 1 | 1998-11-24 |
Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto Grant 5,812,068 - Wisler , et al. September 22, 1 | 1998-09-22 |
Method and apparatus for communicating data in a wellbore and for detecting the influx of gas Grant 5,592,438 - Rorden , et al. * January 7, 1 | 1997-01-07 |