Issued Patents All Time
Showing 101–125 of 141 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840879 | Rotary locking sub for angular alignment of downhole sensors with high side in directional drilling | Patrick R. Derkacz, Justin C. Logan, David A. Switzer | 2017-12-12 |
| 9828852 | Fluid pressure pulse generator and method of using same | David A. Switzer, Justin C. Logan, Jili Liu | 2017-11-28 |
| 9828854 | Mud pulse telemetry apparatus with a pressure transducer and method of operating same | Jili Liu, David A. Switzer, Justin C. Logan | 2017-11-28 |
| 9810030 | Mud motor with integrated abrasion-resistant structure | Kevin Kalman, Vincent Gille Berube, Daniel W. Ahmoye | 2017-11-07 |
| 9771792 | Method and apparatus for multi-channel downhole electromagnetic telemetry | Mingdong Xu, Jili Liu, David A. Switzer | 2017-09-26 |
| 9765615 | Optimizing electromagnetic telemetry transmissions | Jili Liu, Mingdong Xu, David A. Switzer, Monica E. Varga, Mojtaba Kazemi Miraki | 2017-09-19 |
| 9752429 | Downhole electromagnetic and mud pulse telemetry apparatus | David A. Switzer, Jili Liu, Mingdong Xu | 2017-09-05 |
| 9732608 | Downhole telemetry | David A. Switzer, Jili Liu, Justin C. Logan | 2017-08-15 |
| 9719345 | Electromagnetic communications system and method for a drilling operation | David A. Switzer, Jili Liu, Mingdong Xu, Mojtaba Kazemi Miraki | 2017-08-01 |
| 9714569 | Mud pulse telemetry apparatus with a pressure transducer and method of operating same | Jili Liu, David A. Switzer, Justin C. Logan | 2017-07-25 |
| 9708903 | Back up directional and inclination sensors and method of operating same | David A. Switzer, Jili Liu, Mojtaba Kazemi Miraki | 2017-07-18 |
| 9670771 | Methods and apparatus for generating electromagnetic telemetry signals | Daniel W. Ahmoye, David A. Switzer, Justin C. Logan, Patrick R. Derkacz, Mojtaba Kazemi Miraki | 2017-06-06 |
| 9670774 | Fluid pressure pulse generator for a downhole telemetry tool | Gavin Gaw-Wae Lee, Justin C. Logan | 2017-06-06 |
| 9670737 | Mud motor with integrated reamer | Vincent Gille Berube, Kevin Kalman | 2017-06-06 |
| 9664038 | Method and system for transmitting a data frame of an electromagnetic telemetry signal to or from a downhole location | David A. Switzer, Jili Liu, Mingdong Xu | 2017-05-30 |
| 9664037 | Detection of downhole data telemetry signals | Daniel W. Ahmoye, David A. Switzer, Jili Liu | 2017-05-30 |
| 9644471 | Mounting and component holder apparatuses and assemblies for holding rigid components | Jili Liu, David A. Switzer, Justin C. Logan | 2017-05-09 |
| 9631487 | Fluid pressure pulse generator for a downhole telemetry tool | Gavin Gaw-Wae Lee, Justin C. Logan | 2017-04-25 |
| 9631488 | Fluid pressure pulse generator for a downhole telemetry tool | Gavin Gaw-Wae Lee, Justin C. Logan | 2017-04-25 |
| 9617849 | Fluid pressure pulse generator with low and high flow modes for wellbore telemetry and method of using same | David A. Switzer, Justin C. Logan, Jili Liu | 2017-04-11 |
| 9605535 | Integrated downhole system with plural telemetry subsystems | David A. Switzer, Jili Liu, Justin C. Logan, Mingdong Xu | 2017-03-28 |
| 9587441 | Apparatus and method for coaxially joining components to resist relative rotational and longitudinal movement | David A. Switzer, Patrick R. Derkacz, Justin C. Logan, Daniel W. Ahmoye, Darcy A. Downs +1 more | 2017-03-07 |
| 9574441 | Downhole telemetry signal modulation using pressure pulses of multiple pulse heights | Jili Liu, Mingdong Xu, David A. Switzer | 2017-02-21 |
| 9567835 | System and method for managing batteries for use in a downhole drilling application | Jili Liu, Xia PAN, David A. Switzer | 2017-02-14 |
| 9528371 | Fluid pressure pulse generating apparatus and method of using same | Jili Liu, David A. Switzer | 2016-12-27 |