Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11293283 | Synthetic formation evaluation logs based on drilling vibrations | Jianyong Pei, Thomas Dahl, John D. Macpherson, Hanno Reckmann | 2022-04-05 |
| 10352158 | Synthetic formation evaluation logs based on drilling vibrations | Jianyong Pei, Thomas Dahl, John D. Macpherson, Hanno Reckmann | 2019-07-16 |
| 8447523 | High speed data transfer for measuring lithology and monitoring drilling operations | Hanno Reckmann | 2013-05-21 |
| 7911879 | Method of detecting signals in acoustic drill string telemetry | John E. E. Kingman | 2011-03-22 |
| 7650241 | Use of the dynamic downhole measurements as lithology indicators | Joachim Oppelt, Gerald Heisig, Volker Krueger, John D. Macpherson | 2010-01-19 |
| 7503403 | Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements | Michael Neubert, John D. Macpherson, James A. Hood, Thomas Dahl, Volker Krueger +2 more | 2009-03-17 |
| 6769497 | Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications | Vladimir Dubinsky, James V. Leggett, III, Douglas J. Patterson, Alexei Bolshakov, Volker Krueger | 2004-08-03 |
| 6205851 | Method for determining drill collar whirl in a bottom hole assembly and method for determining borehole size | — | 2001-03-27 |
| 6142228 | Downhole motor speed measurement method | Thomas A. Nagelhout | 2000-11-07 |
| 5415030 | Method for evaluating formations and bit conditions | William A. Zoeller | 1995-05-16 |
| 5141060 | Method for optimizing of stabilizer positioning in a bottomhole assembly to eliminate the effects of borehole inclination | — | 1992-08-25 |