| 9915387 |
System and method for manufacturing electrically isolated connection for electromagnetic gap sub assembly |
Jeff Payne |
2018-03-13 |
| 9459371 |
Retrievable downhole cable antenna for an electromagnetic system |
Keith Runnels |
2016-10-04 |
| 9109403 |
Drill bit assembly having electrically isolated gap joint for electromagnetic telemetry |
Derek W. Logan, Tony Dopf, Aaron W. Logan, Rob Utter, Brian Clark +1 more |
2015-08-18 |
| 9022144 |
Drill bit assembly having electrically isolated gap joint for measurement of reservoir properties |
Brian Clark, Reza Taherian, Derek W. Logan, Anthony R. Dopf, Aaron W. Logan +1 more |
2015-05-05 |
| 9004196 |
Drill bit assembly having aligned features |
Kjell Haugvaldstad, Derek W. Logan, Tony Dopf, Aaron W. Logan, Rob Utter |
2015-04-14 |
| 8648733 |
Electromagnetic telemetry assembly with protected antenna |
Anthony R. Dopf, Derek W. Logan |
2014-02-11 |
