Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12359564 | Self-calibrated method of determining borehole fluid acoustic properties | Wei Han, Rocco DiFoggio | 2025-07-15 |
| 11359488 | Self-calibrated method of determining borehole fluid acoustic properties | Wei Han, Rocco DiFoggio | 2022-06-14 |
| 10684384 | Systems and method for formation evaluation from borehole | Debashish Sarkar, Michael R. Wells, Stewart Blake Brazil | 2020-06-16 |
| 10408053 | Encapsulated phased array segment for downhole applications | Brian Breaux, Steffen Toscher, Roger R. Steinsiek | 2019-09-10 |
| 9784874 | Multi-beam phased array acoustic transducer operation for downhole applications | Kamalesh Chatterjee, Roger R. Steinsiek, Vaibhav Sule, Jinsong Zhao | 2017-10-10 |
| 9720121 | Devices and methods for downhole acoustic imaging | Quming Zhou | 2017-08-01 |
| 9567846 | Devices and methods for downhole acoustic imaging | Roger R. Steinsiek, Wei Han, Kamalesh Chatterjee | 2017-02-14 |
| 9103196 | Pipelined pulse-echo scheme for an acoustic image tool for use downhole | Jinsong Zhao | 2015-08-11 |
| 9063242 | Acoustic transducers with dynamic frequency range | Dwight W. Swett, Mark S. Solly | 2015-06-23 |
| 7966874 | Multi-resolution borehole profiling | Gamal A. Hassan, Gavin Lindsay, Philip L. Kurkoski | 2011-06-28 |
| 7652951 | Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications | Vladimir Dubinsky | 2010-01-26 |
| 7463551 | Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications | Vladimir Dubinsky | 2008-12-09 |
| 7301852 | Methods of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications | Vladimir Dubinsky | 2007-11-27 |
| 6985086 | Method and apparatus for LWD shear velocity measurement | Xiao Ming Tang, Douglas J. Patterson, Tsili Wang, Vladimir Dubinksy | 2006-01-10 |
| 6930616 | Method and apparatus for LWD shear velocity measurement | Xiao Ming Tang, Tsili Wang, Douglas J. Patterson, Vladimir Dubinsky | 2005-08-16 |
| 6909666 | Method and apparatus for generating acoustic signals for LWD shear velocity measurement | Vladimir Dubinsky, Douglas J. Patterson, Herbert W. Beimgraben, Julie C. Slaughter, Toby Hansen +1 more | 2005-06-21 |
| 6850168 | Method and apparatus for LWD shear velocity measurement | Xiao Ming Tang, Douglas J. Patterson, Tsili Wang, Vladimir Dubinksy | 2005-02-01 |
| 6769497 | Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications | Vladimir Dubinsky, Pushkar N. Jogi, Douglas J. Patterson, Alexei Bolshakov, Volker Krueger | 2004-08-03 |
| 6614360 | Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers | Vladimir Dubinsky, Douglas J. Patterson | 2003-09-02 |
| 6581010 | Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries | Vladimir Dubinsky, Alexi Bolshakov | 2003-06-17 |
| 6427124 | Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries | Vladimir Dubinsky, Alexi Bolshakov | 2002-07-30 |
| 6272434 | Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto | Macmillan H. Wisler, Wallace H. Meyer, Daniel C. Minette, Ronald J. Deady, Herbert W. Beimgraben +1 more | 2001-08-07 |
| 6253848 | Method of obtaining improved geophysical information about earth formations | Nils Reimers, John W. Harrell, Paulo Tubel | 2001-07-03 |
| 6233524 | Closed loop drilling system | John W. Harrell, Valdimir Dubinsky | 2001-05-15 |
| 6209640 | Method of obtaining improved geophysical information about earth formations | Nils Reimers, John W. Harrell, Paulo Tubel | 2001-04-03 |