| 12360266 |
Acoustic transducer with piezoelectric elements having different polarities |
Jiajun Zhao, Jing Jin, Ruijia Wang |
2025-07-15 |
|
| 12196908 |
Through tubing cement evaluation based on casing extensional waves |
Ruijia Wang, Yao Ge, Brenno Caetano Troca Cabella, Jing Jin, Ho Yin Ma +1 more |
2025-01-14 |
|
| 12078052 |
Tubing eccentricity evaluation using acoustic signals |
Brenno Caetano Troca Cabella, Xiang Wu, Marco Aurelio Luzio, Pablo Vieira Rego, Federico Combis Lucas +3 more |
2024-09-03 |
$19,802,000 |
| 12022736 |
Acoustic sensor self-induced interference control |
Jing Jin, Richard Timothy Coates |
2024-06-25 |
$20,034,000 |
| 11994642 |
Method and apparatus for geophysical formation evaluation measurements behind casing |
Kristoffer Thomas Walker, John Philip Granville |
2024-05-28 |
$14,863,000 |
| 11927712 |
Downhole ultrasound image correction in oil based mud |
Yu Weng, Peng Li, Richard Timothy Coates, Rodney Allen Marlow, Xiang Wu +2 more |
2024-03-12 |
$15,846,000 |
| 11840924 |
Short and wideband isolator for acoustic tools |
Jing Jin, Gary Kainer |
2023-12-12 |
$51,983,000 |
| 11808136 |
Through-tubing, cased-hole sealed material evaluation using acoustic measurements |
Pablo Vieira Rego, Randolph S. Coles, Jeffrey James Crawford |
2023-11-07 |
$20,271,000 |
| 11770975 |
Acoustic sensor self-induced interference control |
Jing Jin, Richard Timothy Coates |
2023-09-26 |
$21,082,000 |
| 11662495 |
Sonic through tubing cement evaluation |
Qingtao Sun, Randolph S. Coles, Federico Combis Lucas |
2023-05-30 |
$21,194,000 |
| 11662496 |
Through tubing acoustic measurements |
Brenno Caetano Troca Cabella, Ruijia Wang, Qingtao Sun, Yao Ge, Xiang Wu +3 more |
2023-05-30 |
$21,194,000 |
| 11650346 |
Downhole acoustic measurement |
Qingtao Sun, Andrew Clair Colbert |
2023-05-16 |
$24,807,000 |
| 11578592 |
Robust logging-while-drilling sonic transmitters with improved strength and bandwidth |
Michael Shaun Spencer, Peng Li, Jing Jin, Jose Sanchez, Haoshi Song |
2023-02-14 |
$18,475,000 |
| 11550073 |
Enhanced-resolution rock formation body wave slowness determination from borehole guided waves |
Ruijia Wang |
2023-01-10 |
$23,324,000 |
| 11519255 |
Downhole tool dynamic and motion measurement with multiple ultrasound transducer |
Peng Li, Yu Weng, Rodney Allen Marlow, Boguslaw Wiecek |
2022-12-06 |
$18,619,000 |
| 11512586 |
Logging while drilling tool |
Qingtao Sun, Richard Timothy Coates |
2022-11-29 |
$16,100,000 |
| 11435493 |
Enhanced waveform analysis for target modes of borehole waves |
Ruijia Wang |
2022-09-06 |
$11,222,000 |
| 11415720 |
Downhole ultrasound image correction in oil based mud |
Yu Weng, Peng Li, Richard Timothy Coates, Rodney Allen Marlow, Xiang Wu +2 more |
2022-08-16 |
$17,082,000 |
| 11385374 |
Borehole dispersive wave processing with automatic dispersion matching for compressional and shear slowness |
Ruijia Wang, Gary Kainer, Joonshik Kim |
2022-07-12 |
$20,054,000 |
| 11293904 |
Acoustic receivers with cylindrical crystals |
Minh Dang Nguyen, Clinton Keith Bates |
2022-04-05 |
$18,334,000 |
| 11280926 |
Hydrophone having no internal leads |
Yee Siang Teh, Ife Ogbunuju |
2022-03-22 |
$14,402,000 |
| 11243326 |
Borehole imaging using amplitudes of refracted acoustic waves |
Yao Ge, Wei Li, Jing Jin |
2022-02-08 |
$38,716,000 |
| 11209565 |
High precision acoustic logging processing for compressional and shear slowness |
Ruijia Wang, Kristoffer Thomas Walker, Baichun Sun |
2021-12-28 |
$19,581,000 |
| 11143777 |
Quadruple transmitter and methods to determine wave velocities of a downhole formation |
Jing Jin |
2021-10-12 |
$8,311,000 |
| 11112519 |
Automatic slowness-frequency range determination for advanced borehole sonic data processing |
Ruijia Wang, John Philip Granville, Baichun Sun |
2021-09-07 |
$10,537,000 |