| 10408050 |
Acoustic receiver for use on a drill string |
Paul L. Camwell |
2019-09-10 |
| 9458712 |
Acoustic telemetry stacked-ring wave delay isolator system and method |
Paul L. Camwell, David D. Whalen |
2016-10-04 |
| 8982667 |
Acoustic telemetry stacked-ring wave delay isolator system and method |
Paul L. Camwell, David D. Whalen |
2015-03-17 |
| 8823543 |
Telemetry wave detection apparatus and method |
Paul L. Camwell, James M. Neff |
2014-09-02 |
| 8437220 |
Parallel-path acoustic telemetry isolation system and method |
Paul L. Camwell, David D. Whalen |
2013-05-07 |
| 8270251 |
Acoustic isolator |
Paul L. Camwell, Anthony R. Dopf, Derek W. Logan |
2012-09-18 |
| 7928861 |
Telemetry wave detection apparatus and method |
Paul L. Camwell, James M. Neff |
2011-04-19 |
| 6791470 |
Reducing injection loss in drill strings |
— |
2004-09-14 |
| 6188647 |
Extension method of drillstring component assembly |
— |
2001-02-13 |
| 6147932 |
Acoustic transducer |
— |
2000-11-14 |
| 5823261 |
Well-pump alignment system |
— |
1998-10-20 |
| 5703836 |
Acoustic transducer |
— |
1997-12-30 |
| 5477505 |
Downhole pipe selection for acoustic telemetry |
— |
1995-12-19 |
| 5274606 |
Circuit for echo and noise suppression of accoustic signals transmitted through a drill string |
Douglas D. Scott |
1993-12-28 |
| 5222049 |
Electromechanical transducer for acoustic telemetry system |
— |
1993-06-22 |
| 5128901 |
Acoustic data transmission through a drillstring |
— |
1992-07-07 |
| 5056067 |
Analog circuit for controlling acoustic transducer arrays |
— |
1991-10-08 |