Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428948 | Wellbore trajectory model calibration for directional drilling | Umut Zalluhoglu, Nazli Demirer, Julien Christian Marck | 2025-09-30 |
| 12421837 | Real-time automated geosteering interpretation using adaptive combined heatmaps | Shahin Tasoujian, Siyang Song, Eirik Hansen, Vytautas Usaitis | 2025-09-23 |
| 12385382 | Optimal probabilistic steering control of directional drilling systems | Nazli Demirer, Alexander Keller, Dongmei Chen | 2025-08-12 |
| 12359556 | Robust linear parameter varying control design for automated curvature cruise | Shahin Tasoujian, Yuanyan Chen, Khunsa Hisham, Vy Pho, Ketan C. Bhaidasna | 2025-07-15 |
| 12345148 | Systems and methods for characterizing a subterranean formation having a formation boundary surface | Tingting Zeng, Eirik Hansen, Siyang Song | 2025-07-01 |
| 12282129 | Geosteering interpretation using bayesian inference | Siyang Song, Shahin Tasoujian, Eirik Hansen, Vytautas Usaitis | 2025-04-22 |
| 12247474 | Automated vertical-curve-lateral drilling | Nazli Demirer | 2025-03-11 |
| 12247449 | Model based adaptive control scheme for pump down operation | Jian Wu, Atchyuta Ramayya Venna, Siyang Song, Sudhir Gupta | 2025-03-11 |
| 12228640 | Detection of pipe features with pressure pulses | Zhijie Sun, Yang Yu, David Bennett | 2025-02-18 |
| 12123295 | Slide-rotate ratio mode optimization for mud motor trajectory control | Jian Wu, Nazli Demirer, Vy Pho | 2024-10-22 |
| 12044117 | Methods for estimating downhole weight on bit and rate of penetration using acceleration measurements | Alexander Keller, Ketan C. Bhaidasna, Jian Wu, Julien Christian Marck, Nazli Demirer +3 more | 2024-07-23 |
| 12024995 | Perturbation based well path reconstruction | Julien Christian Marck, Umut Zalluhoglu, Nazli Demirer | 2024-07-02 |
| 12024992 | Model-based curvature cruise control design | Shahin Tasoujian, Khunsa Hisham, Yuanyan Chen, Ketan C. Bhaidasna, Vy Pho | 2024-07-02 |
| 12012840 | Techniques for calibrating borehole propagation model for direction drilling in real time | Vy Pho, Nazli Demirer, Umut Zalluhoglu | 2024-06-18 |
| 12006813 | Real-time curvature estimation for autonomous directional drilling | Khunsa Hisham, Shahin Tasoujian, Ketan C. Bhaidasna, Yuanyan Chen, Vy Pho | 2024-06-11 |
| 11739627 | Error-space feedback controller for drill bit steering | Yuanyan Chen, Nazli Demirer, Khunsa Hisham, Shahin Tasoujian | 2023-08-29 |
| 11674353 | Trajectory control for directional drilling | Umut Zalluhoglu | 2023-06-13 |
| 11613930 | Systems and methods to improve directional drilling | Yiming Zhao, Umut Zalluhoglu, Julien Christian Marck | 2023-03-28 |
| 11408268 | Autonomous directional drilling directional tendency estimation | Umut Zalluhoglu, Nazli Demirer, Peter Hornblower, Julien Christian Marck | 2022-08-09 |
| 11326441 | Sensor fusion and model calibration for bit attitude prediction | Qiuying Gu, Julien Christian Valery Marek, Umut Zalluhoglu | 2022-05-10 |
| 10883341 | Determining control inputs for drilling a wellbore trajectory in a geologic formation | Nazli Demirer, Umut Zalluhoglu, Julien Christian Valery Marek | 2021-01-05 |
| 10087357 | Cement compositions comprising particulate foamed elastomers and associated methods | Jeffery Dwane Karcher, Benjamin John Iverson, Christopher L. Gordon | 2018-10-02 |
| 10066146 | Wellbore servicing compositions and methods of making and using same | Ronnie Glen Morgan, Robert L. Browning, Marcus Duffy, Chase Russell Gamwell | 2018-09-04 |
| 9594009 | Cement testing | David L. Meadows, Keith D. Pewitt | 2017-03-14 |
| 9500573 | Cement testing | David L. Meadows, Walmy Cuello Jimenez, Robert L. Browning | 2016-11-22 |