Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12022736 | Acoustic sensor self-induced interference control | Chung Chang, Jing Jin | 2024-06-25 |
| 11927712 | Downhole ultrasound image correction in oil based mud | Yu Weng, Peng Li, Chung Chang, Rodney Allen Marlow, Xiang Wu +2 more | 2024-03-12 |
| 11770975 | Acoustic sensor self-induced interference control | Chung Chang, Jing Jin | 2023-09-26 |
| 11719840 | Subsurface wave slowness prediction system | Ruijia Wang | 2023-08-08 |
| 11656381 | Extracting shear wave slowness from hexapole waves and octupole waves | Ruijia Wang, Brenda Sue Jonathan | 2023-05-23 |
| 11567228 | Acoustic dispersion curve identification based on reciprocal condition number | Jiajun Zhao, Ruijia Wang, Qingtao Sun | 2023-01-31 |
| 11512586 | Logging while drilling tool | Qingtao Sun, Chung Chang | 2022-11-29 |
| 11415720 | Downhole ultrasound image correction in oil based mud | Yu Weng, Peng Li, Chung Chang, Rodney Allen Marlow, Xiang Wu +2 more | 2022-08-16 |
| 11353616 | Methods and systems for processing slowness values from borehole sonic data | Ruijia Wang, Kristoffer Thomas Walker | 2022-06-07 |
| 11078784 | Dynamic transducer normalization | — | 2021-08-03 |
| 10927669 | Transducer ringing | Peng Li | 2021-02-23 |
| 10871584 | Seismic data processing | Kun Jiao, Wei Huang, Alan Schiemenz, Denes Vigh | 2020-12-22 |
| 10739478 | Seismic data processing | Darrell Coles, Wei Dai, Kun Jiao | 2020-08-11 |
| 10514475 | Post-critical reflection muting in seismic migration | Cintia Lapilli, Hannah Flath, Dmitry Kulakov | 2019-12-24 |
| 10324210 | Method and apparatus for determining rough sea topography during a seismic survey | Craig J. Beasley, Hannah Flath, Clara Castellanos Lopez | 2019-06-18 |
| 10113902 | Detection of seismic signals using fiber optic distributed sensors | Douglas E. Miller, Arthur H. Hartog, Colin Wilson, Dominic Joseph Brady, Henry Menkiti +2 more | 2018-10-30 |
| 9891335 | Wireless logging of fluid filled boreholes | Douglas E. Miller, Tarek M. Habashy, Francois M. Auzerais, Phil F. Sullivan, Dominique Guillot +1 more | 2018-02-13 |
| 9784867 | Seismic data processing | Kun Jiao, Zhen Xu, Alan Schiemenz | 2017-10-10 |
| 9529109 | Methods and apparatus for determining slowness of wavefronts | Nicholas N. Bennett, Jakob Haldorsen, Douglas E. Miller | 2016-12-27 |
| 9470807 | Detection of seismic signals using fiber optic distributed sensors | Douglas E. Miller, Arthur H. Hartog, Colin Wilson, Dominic Joseph Brady, Henry Menkiti +2 more | 2016-10-18 |
| 9453404 | Mechanical tube wave sources and methods of use for liquid filled boreholes | Rod Shampine, Philip F. Sullivan, Douglas E. Miller, Dominque Guillot, Francois M. Auzerais | 2016-09-27 |
| 9354341 | Deghosting measured survey data | Craig J. Beasley | 2016-05-31 |
| 9103203 | Wireless logging of fluid filled boreholes | Douglas E. Miller, Philip F. Sullivan, Francois M. Auzerais, Tarek M. Habashy, Dominique Guillot +1 more | 2015-08-11 |
| 8813869 | Analysis refracted acoustic waves measured in a borehole | Nicholas Bennett, Jakob Haldorsen, Hiroaki Yamamoto, Nobuyasu Hirabayasbi, Takeshi Endo | 2014-08-26 |
| 8689904 | Detection of gas influx into a wellbore | Benoit Froelich, Eric Lavruit | 2014-04-08 |