Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12270256 | Refreshable polycrystalline diamond compact (PDC) drill bits | Guodong Zhan, Abdulwahab S. Al-Johar | 2025-04-08 |
| 12188342 | Intelligent drilling system with external stationary sensing shield | Guodong Zhan, Chinthaka Pasan Gooneratne, Abdulwahab Aljohar, Timothy E. Moellendick | 2025-01-07 |
| 12166168 | Electrolyte structure for a high-temperature, high-pressure lithium battery | Guodong Zhan, Timothy E. Moellendick, Abdulwahab Aljohar, Chinthaka Pasan Gooneratne | 2024-12-10 |
| 12146381 | Drilling stabilizers with dissolvable windows for controlled release of chemicals | Jothibasu Ramasamy, Chinthaka Pasan Gooneratne | 2024-11-19 |
| 12042868 | Producing catalyst-free PDC cutters | Guodong Zhan, Timothy E. Moellendick, Bodong Li, Chinthaka Pasan Gooneratne, Duanwei He | 2024-07-23 |
| 12024470 | Fabrication of downhole drilling tools | Guodong Zhan, Duanwei He, Abrar Alshaikh | 2024-07-02 |
| 11933136 | Dissolvable balls for activation and deactivation of a circulating sub apparatus | Jothibasu Ramasamy, Chinthaka Pasan Gooneratne | 2024-03-19 |
| 11913295 | System and method for plugging a lost-circulation zone in a subsurface formation | Jothibasu Ramasamy, Chinthaka Pasan Gooneratne | 2024-02-27 |
| 11898422 | Diamond coating on the cone for expandable tubulars | Guodong Zhan | 2024-02-13 |
| 11898436 | Method and apparatus for downhole charging, initiation, and release of drilling micro sensing systems (microchips) | Abrar Alshaikh, Bodong Li, Guodong Zhan | 2024-02-13 |
| 11898437 | Method and system for determining fluid level change using pressure monitoring of annular gas | Bodong Li, Guodong Zhan, Chinthaka Pasan Gooneratne, Timothy E. Moellendick, Graham Hitchcock | 2024-02-13 |
| 11867055 | Method and system for construction of artificial intelligence model using on-cutter sensing data for predicting well bit performance | Guodong Zhan, Arturo Magana-Mora, Timothy E. Moellendick, Chinthaka Pasan Gooneratne | 2024-01-09 |
| 11859449 | Systems for a dissolvable material based downhole tool | Bodong Li, Abrar Alshaikh, Chinthaka Pasan Gooneratne, Guodong Zhan | 2024-01-02 |
| 11851977 | Drilling stabilizers with dissolvable windows for controlled release of chemicals | Jothibasu Ramasamy, Chinthaka Pasan Gooneratne | 2023-12-26 |
| 11846151 | Repairing a cased wellbore | Guodong Zhan, Abdulwahab S. Al-Johar, Bodong Li, Timothy E. Moellendick | 2023-12-19 |
| 11828165 | In-cutter sensor LWD tool and method | Guodong Zhan, Timothy E. Moellendick, Chinthaka Pasan Gooneratne, Arturo Magana Mora | 2023-11-28 |
| 11828163 | Piston-based drilling microchips release system | Abrar Alshaikh, Bodong Li, Guodong Zhan | 2023-11-28 |
| 11821263 | Reversible polycrystalline diamond compact bit | Guodong Zhan, Timothy E. Moellendick, Amjad Shaarawi, Abdulwahab S. Al-Johar | 2023-11-21 |
| 11814933 | Actuation of downhole devices | Jothibasu Ramasamy, Chinthaka Pasan Gooneratne | 2023-11-14 |
| 11808089 | Coatings to prevent cutter loss in steel body PDC downhole tools | Guodong Zhan | 2023-11-07 |
| 11725498 | Method and apparatus for downhole charging and initiation of drilling microchips | Abrar Alshaikh, Bodong Li, Guodong Zhan | 2023-08-15 |
| 11702741 | Producing polycrystalline diamond compact cutters with coatings | Guodong Zhan, Abdulwahab S. Al-Johar | 2023-07-18 |
| 11686196 | Downhole actuation system and methods with dissolvable ball bearing | Jothibasu Ramasamy, Chinthaka Pasan Gooneratne | 2023-06-27 |
| 11680883 | Sensors to evaluate the in-situ property of cutting element during wear test | Chinthaka Pasan Gooneratne, Guodong Zhan, Bodong Li, Arturo Magana Mora | 2023-06-20 |
| 11668185 | In-cutter sensor LWD tool and method | Guodong Zhan, Timothy E. Moellendick, Chinthaka Pasan Gooneratne, Arturo Magana Mora | 2023-06-06 |