Issued Patents All Time
Showing 1–25 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416232 | Real-time tool mode waveform removal | Jiajun Zhao, Brenda Sue Jonathan | 2025-09-16 |
| 12386091 | Single-well reflected horizontal shear wave imaging with mixed types of transmitters and receivers | Brian E. Hornby | 2025-08-12 |
| 12360266 | Acoustic transducer with piezoelectric elements having different polarities | Jiajun Zhao, Jing Jin, Chung Chang | 2025-07-15 |
| 12345845 | Fluid phase discrimination and acoustic velocity estimation by measuring guided-wave speed | Yadong Wang, Jichun Sun, Xiang Wu | 2025-07-01 |
| 12297733 | Azimuthal scanning of a wellbore for determination of a cement-bond condition and for detecting/locating a leak source | Yao Ge, Jing Jin, Xiang Wu | 2025-05-13 |
| 12265062 | Through tubing cement evaluation using converted multipole resonance mode | Yao Ge, Ho Yin Ma | 2025-04-01 |
| 12234716 | Multi-pole resonance based through tubing cement evaluation | Yao Ge, Ho Yin Ma, Xiang Wu | 2025-02-25 |
| 12196908 | Through tubing cement evaluation based on casing extensional waves | Yao Ge, Brenno Caetano Troca Cabella, Chung Chang, 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, Chung Chang +3 more | 2024-09-03 |
| 12037887 | Real-time cement bond logging based on correlation | Jiajun Zhao, Jonathan Brenda Sue | 2024-07-16 |
| 12038546 | Methods to estimate formation slowness from multi-borehole modes and of a multi-mode dispersion wave and multi-mode dispersion estimation systems | Jiajun Zhao | 2024-07-16 |
| 12032113 | Through tubing cement evaluation based on rotatable transmitter and computational rotated responses | Yao Ge, Xiang Wu, Ho Yin Ma | 2024-07-09 |
| 12019199 | Interpolation method and system to obtain azimuthal borehole sonic measurements | Denis P. Schmitt, Xiang Wu | 2024-06-25 |
| 11992860 | Air layer for improved performance of transducer at low frequencies | Jing Jin, Xiang Wu | 2024-05-28 |
| 11970931 | Through tubing cement evaluation using borehole resonance mode | Yao Ge, Ho Yin Ma, Jing Jin, Brenno Caetano Troca Cabella, Xiang Wu | 2024-04-30 |
| 11946364 | Removing guided wave noise from recorded acoustic signals | Yao Ge, Philip William Tracadas, Yi Yang Ang, Xiang Wu | 2024-04-02 |
| 11927711 | Enhanced-resolution sonic data processing for formation body wave slowness with full offset waveform data | Baichun Sun | 2024-03-12 |
| 11815643 | Selection and removal of acoustic baseline signal for enhanced cement bond evaluation | Yao Ge, Xiang Wu | 2023-11-14 |
| 11774619 | Reduction of a tool wave excited by a transmitter of a well logging tool | Jing Jin, Yao Ge | 2023-10-03 |
| 11768306 | Enhanced anisotropy analysis with multicomponent dipole sonic data | Baichun Sun | 2023-09-26 |
| 11746644 | Measuring low-frequency casing guided waves to evaluate cement bond condition behind casing in the presence of a tubing | Yao Ge | 2023-09-05 |
| 11719840 | Subsurface wave slowness prediction system | Richard Timothy Coates | 2023-08-08 |
| 11693141 | Methods and systems for processing borehole dispersive waves with a physics-based machine learning analysis | John Philip Granville | 2023-07-04 |
| 11661837 | Cement bonding evaluation with a sonic-logging-while-drilling tool | — | 2023-05-30 |
| 11662496 | Through tubing acoustic measurements | Brenno Caetano Troca Cabella, Chung Chang, Qingtao Sun, Yao Ge, Xiang Wu +3 more | 2023-05-30 |