Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9030911 | Method and system for delineating a second wellbore from a first wellbore | Douglas J. Patterson | 2015-05-12 |
| 8880348 | Radon migration of acoustic data | Alexei Bolshakov, Douglas J. Patterson, Vladimir Dubinsky, Zarema Dubinsky | 2014-11-04 |
| 8576659 | Method and apparatus for acoustic impedance and P-wave anisotropy measurements | Sergey Egerev, Victor Yushin, Oleg Ovchinnikov, Vladimir Dubinsky, Douglas J. Patterson | 2013-11-05 |
| 8456952 | Curve-fitting technique for determining dispersion characteristics of guided elastic waves | Chen Li, Douglas J. Patterson | 2013-06-04 |
| 8379483 | Method and apparatus for determining radial shear velocity variation from dipole acoustic logging | Douglas J. Patterson | 2013-02-19 |
| 8004932 | Identification of stress in formations using angles of fast and slow dipole waves in borehole acoustic logging | Yibing Zheng, Daniel Moos, Vladimir Dubinsky, Douglas J. Patterson | 2011-08-23 |
| 7970544 | Method and apparatus for characterizing and estimating permeability using LWD Stoneley-wave data | Douglas J. Patterson | 2011-06-28 |
| 7924652 | Method for determining seismic anisotropy | Vladimir Dubinsky, Yibing Zheng | 2011-04-12 |
| 7912648 | Method and apparatus for imaging bed boundaries using azimuthal propagation resistivity measurements | Tsili Wang | 2011-03-22 |
| 7911877 | Active noise cancellation through the use of magnetic coupling | Douglas J. Patterson, Alexei Bolshakov | 2011-03-22 |
| 7813219 | Electro-magnetic acoustic measurements combined with acoustic wave analysis | Vladimir Dubinsky, Vitaly N. Dorovsky | 2010-10-12 |
| 7787327 | Cement bond analysis | Alexei Bolshakov, Edward Domangue | 2010-08-31 |
| 7773454 | Method and apparatus for cement evaluation using multiple acoustic wave types | Joseph Gregory Barolak, Douglas J. Patterson, Alexei Bolshakov, Vladimir Dubinsky | 2010-08-10 |
| 7681450 | Casing resonant radial flexural modes in cement bond evaluation | Alexei Bolshakov, Vladimir Dubinsky, Douglas J. Patterson, Dimitri Donskoy, Joseph Gregory Barolak | 2010-03-23 |
| 7672784 | Using statistics of a fitting function for data-driven dispersion slowness processing | Yibing Zheng, Douglas J. Patterson | 2010-03-02 |
| 7663969 | Use of Lamb waves in cement bond logging | Alexei Bolshakov, Joseph Gregory Barolak, Douglas J. Patterson, Vladimir Dubinsky, Ron Alers +1 more | 2010-02-16 |
| 7660200 | Method for coherence-filtering of acoustic array signal | — | 2010-02-09 |
| 7639562 | Active noise cancellation through the use of magnetic coupling | Douglas J. Patterson, Alexei Bolshakov | 2009-12-29 |
| 7626886 | P-wave anisotropy determination using borehole measurements | Vladimir Dubinsky, Yibing Zheng, Douglas J. Patterson | 2009-12-01 |
| 7525872 | Method and apparatus for cement bond evaluation using transversely polarized shear waves | Alexei Bolshakov, Tsili Wang, Douglas J. Patterson | 2009-04-28 |
| 7492664 | Method for processing acoustic reflections in array data to image near-borehole geological structure | Yibing Zheng, Douglas J. Patterson | 2009-02-17 |
| 7035165 | Imaging near-borehole structure using directional acoustic-wave measurement | — | 2006-04-25 |
| 6985086 | Method and apparatus for LWD shear velocity measurement | Douglas J. Patterson, Tsili Wang, James V. Leggett, III, Vladimir Dubinksy | 2006-01-10 |
| 6930616 | Method and apparatus for LWD shear velocity measurement | Tsili Wang, Douglas J. Patterson, James V. Leggett, III, Vladimir Dubinsky | 2005-08-16 |
| 6925031 | Method of using electrical and acoustic anisotropy measurements for fracture identification | Berthold Kriegshauser, Otto N. Fanini, Richard A. Mollison, Liming Yu, Tsili Wang | 2005-08-02 |