Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6208586 | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas | Louis H. Rorden, Ashok Patel, Frank L. Gibbons, Steven C. Owens | 2001-03-27 |
| 6088294 | Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction | Vladimir Dubinsky, John W. Harrell, William Thomas Balogh, Paul Seaton, Andrew Brooks +1 more | 2000-07-11 |
| 6084826 | Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers | — | 2000-07-04 |
| 6065538 | Method of obtaining improved geophysical information about earth formations | Nils Reimers, John W. Harrell, Paulo Tubel | 2000-05-23 |
| 6041860 | Apparatus and method for performing imaging and downhole operations at a work site in wellbores | Gregory R. Nazzal, Paulo Tubel, Gerald D. Lynde, John W. Harrell | 2000-03-28 |
| 6023443 | Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries | Vladimir Dubinsky, Alexei Bolshakov | 2000-02-08 |
| 6021377 | Drilling system utilizing downhole dysfunctions for determining corrective actions and simulating drilling conditions | Vladimir Dubinsky | 2000-02-01 |
| 5850369 | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas | Louis H. Rorden, Ashok Patel, Frank L. Gibbons, Steven C. Owens | 1998-12-15 |
| 5842149 | Closed loop drilling system | John W. Harrell, Vladimir Dubinsky | 1998-11-24 |
| 5812068 | Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto | Macmillan M. Wisler, Wallace H. Meyer, Daniel C. Minette, Ronald J. Deady, Herbert W. Beimgraben +1 more | 1998-09-22 |
| 5592438 | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas | Louis H. Rorden, Ashok Patel, Frank L. Gibbons, Steven C. Owens | 1997-01-07 |