| 10254432 |
Multi-electrode electric field downhole logging tool |
Nestor Cuevas, Herve Denaclara, Tomohito Yamazaki, Ryosei Aoki |
2019-04-09 |
| 10197694 |
Controlled-frequency downhole seismic source |
Robert Lanza, Ryosei Aoki, Herve Denaclara |
2019-02-05 |
| 9732609 |
Distributed clamps for a downhole seismic source |
Bruce P. Marion |
2017-08-15 |
| 9383462 |
Seismic device with sealed housing and related methods |
Robert Lanza, Bradley Bryans, Leo Dekkers, Shantonu Ray |
2016-07-05 |
| 8730762 |
Automatic programmed acquisition using downhole seismic sources |
Bruce P. Marion |
2014-05-20 |
| 8340911 |
Compensated ensemble crystal oscillator for use in a well borehole system |
Martin Sorrells |
2012-12-25 |
| 7916578 |
Seismic wave generation systems and methods for cased wells |
Martin Sorrells, Thomas E. Owen, Edgar C. Schroeder |
2011-03-29 |
| 7841403 |
Rotator for wireline conveyed wellbore instruments and method for rotating an instrument in a wellbore |
Bruce P. Marion |
2010-11-30 |
| 7721809 |
Wellbore instrument module having magnetic clamp for use in cased wellbores |
— |
2010-05-25 |
| 7441628 |
Wellbore signal generator |
— |
2008-10-28 |
| 7230543 |
Downhole clock synchronization apparatus and methods for use in a borehole drilling environment |
Martin Sorrells, Peter R. Harvey |
2007-06-12 |
| 7046584 |
Compensated ensemble crystal oscillator for use in a well borehole system |
Martin Sorrells |
2006-05-16 |
| 6196350 |
Apparatus and method for attenuating tube waves in a borehole |
— |
2001-03-06 |
| 6193010 |
System for generating a seismic signal in a borehole |
— |
2001-02-27 |
| 5555220 |
Slickline conveyed wellbore seismic receiver |
— |
1996-09-10 |
| 4258281 |
Laminated flux shunt for dynamoelectric machine stator |
Raymond M. Calfo, Arthur Mulach, Frank P. Fidei |
1981-03-24 |
