Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8365814 | Pre-verification of perforation alignment | Freeman L. Hill, Tim Sampson | 2013-02-05 |
| 8256534 | Adaptive drilling control system | Chakradhar Byreddy, Dmitriy Dashevskiy, Nimish Tambe | 2012-09-04 |
| 8248266 | Bidirectional telemetry apparatus and methods for wellbore operations | Frank W. Shepard, Ralf Zaeper, Volker Krueger | 2012-08-21 |
| 8042624 | System and method for improved depth measurement correction | Lars Quernheim, Dmitriy Dashevskiy | 2011-10-25 |
| 8042623 | Distributed sensors-controller for active vibration damping from surface | Lars Quernheim, Dmitriy Dashevskiy | 2011-10-25 |
| 7694558 | Downhole washout detection system and method | Ralf Zaeper | 2010-04-13 |
| 7650241 | Use of the dynamic downhole measurements as lithology indicators | Pushkar N. Jogi, Joachim Oppelt, Gerald Heisig, Volker Krueger | 2010-01-19 |
| 7503403 | Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements | Pushkar N. Jogi, Michael Neubert, James A. Hood, Thomas Dahl, Volker Krueger +2 more | 2009-03-17 |
| 7477161 | Bidirectional telemetry apparatus and methods for wellbore operations | Frank W. Shepard, Ralf Zaeper, Volker Krueger | 2009-01-13 |
| 7172037 | Real-time drilling optimization based on MWD dynamic measurements | Dmitriy Dashevskiy, Vladimir Dubinsky, Pat McGinley | 2007-02-06 |
| 6898967 | Azimuthal resistivity using a non-directional device | — | 2005-05-31 |
| 6847585 | Method for acoustic signal transmission in a drill string | — | 2005-01-25 |
| 6732052 | Method and apparatus for prediction control in drilling dynamics using neural networks | Robert MacDonald, Volker Krueger, Vladimir Dubinsky, Dmitriy Dashevskiy | 2004-05-04 |
| 5321981 | Methods for analysis of drillstring vibration using torsionally induced frequency modulation | — | 1994-06-21 |