Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11656381 | Extracting shear wave slowness from hexapole waves and octupole waves | Brenda Sue Jonathan, Richard Timothy Coates | 2023-05-23 |
| 11656379 | Methods to estimate formation shear wave slowness from multi-firings of different types of acoustic sources and multi-mode dispersion estimation systems | Jiajun Zhao | 2023-05-23 |
| 11656382 | Leak induced guided wave amplitude log for downhole leakage localization | Yao Ge, Xiang Wu, Jing Jin | 2023-05-23 |
| 11592591 | Through tubing acoustic measurements to determine material discontinuities | Brenno Caetano Troca Cabella, Yao Ge, Xiang Wu | 2023-02-28 |
| 11567228 | Acoustic dispersion curve identification based on reciprocal condition number | Jiajun Zhao, Qingtao Sun, Richard Timothy Coates | 2023-01-31 |
| 11554387 | Ringdown controlled downhole transducer | Jing Jin, Yao Ge | 2023-01-17 |
| 11550073 | Enhanced-resolution rock formation body wave slowness determination from borehole guided waves | Chung Chang | 2023-01-10 |
| 11525936 | Through casing formation slowness evaluation with a sonic logging tool | Yao Ge, Xiang Wu, Jing Jin | 2022-12-13 |
| 11513248 | Imaging with both dipole and quadrupole receivers | Brian E. Hornby | 2022-11-29 |
| 11466558 | Inversion-based array processing for cement-bond evaluation with an LWD tool | Wei-Bin Ewe | 2022-10-11 |
| 11435493 | Enhanced waveform analysis for target modes of borehole waves | Chung Chang | 2022-09-06 |
| 11385374 | Borehole dispersive wave processing with automatic dispersion matching for compressional and shear slowness | Chung Chang, Gary Kainer, Joonshik Kim | 2022-07-12 |
| 11365625 | Determining broadband mud properties | Wei-Bin Ewe, Baris Guner | 2022-06-21 |
| 11360232 | Mapping wave slowness using multi-mode semblance processing techniques | Wei-Bin Ewe, Jiajun Zhao | 2022-06-14 |
| 11353616 | Methods and systems for processing slowness values from borehole sonic data | Richard Timothy Coates, Kristoffer Thomas Walker | 2022-06-07 |
| 11237288 | Verifying measurements of elastic anisotropy parameters in an anisotropic wellbore environment | Brian E. Hornby, Kristoffer Thomas Walker, Mark Vincent Collins, Joonshik Kim, Baichun Sun | 2022-02-01 |
| 11209565 | High precision acoustic logging processing for compressional and shear slowness | Chung Chang, Kristoffer Thomas Walker, Baichun Sun | 2021-12-28 |
| 11112519 | Automatic slowness-frequency range determination for advanced borehole sonic data processing | Chung Chang, John Philip Granville, Baichun Sun | 2021-09-07 |
| 11112526 | Waveform processing utilizing an amplitude adaptive data mask | — | 2021-09-07 |
| 10989832 | Pad alignment with a multi-frequency-band and multi-window semblance processing | Wei-Bin Ewe | 2021-04-27 |
| 10775525 | Identifying and visually presenting formation slowness based on low-frequency dispersion asymptotes | Chung Chang, John Philip Granville, Gary Kainer | 2020-09-15 |
| 10670761 | Quasi-static Stoneley slowness estimation | Chung Chang, Baichun Sun | 2020-06-02 |
| 10663612 | Real-time determination of mud slowness, formation type, and monopole slowness picks in downhole applications | Chung Chang, Baichun Sun | 2020-05-26 |
| 10317555 | Method of minimizing tool response for downhole logging operations | Wei Li, Arthur Cheng, Glenn Andrew Wilson, Chung Chang | 2019-06-11 |