| 12281552 |
Strain decomposition method |
Timothy James Ulrich, II, James A. Ten Cate, Harvey Edwin Goodman |
2025-04-22 |
| 11079505 |
Time-reversed nonlinear acoustics for downhole pressure measurements |
Paul A. Johnson, Timothy James Ulrich, II, Pierre-Yves Le Bas, Harvey Edwin Goodman, Marcel Remillieux |
2021-08-03 |
| 11067711 |
Time-reversed nonlinear acoustic downhole pore pressure measurements |
Harvey Edwin Goodman, Timothy James Ulrich, II, Paul A. Johnson, Marcel Remillieux, Pierre-Yves Le Bas |
2021-07-20 |
| 11029435 |
Downhole nonlinear acoustics measurements in rock formations using dynamic acoustic elasticity and time reversal |
Harvey Edwin Goodman, Timothy James Ulrich, II, Peter Roberts, Marcel Remillieux, Paul A. Johnson +1 more |
2021-06-08 |
| 9453926 |
System and method for investigating sub-surface features of a rock formation using compressional acoustic sources |
Cung Vu, Christopher Skelt, Kurt Nihei, Paul A. Johnson, James A. Ten Cate +2 more |
2016-09-27 |
| 9360573 |
System and method for generating 3D images of non-linear properties of rock formation using surface seismic or surface to borehole seismic or both |
Cung Vu, Kurt Nihei, Paul A. Johnson, James A. Ten Cate, Pierre-Yves Le Bas +1 more |
2016-06-07 |
| 9223039 |
System and method for generating micro-seismic events and characterizing properties of a medium with non-linear acoustic interactions |
Cung Vu, Kurt Nihei, Paul A. Johnson, James A. Ten Cate, Pierre-Yves Le Bas +1 more |
2015-12-29 |
| 9110178 |
System and method for investigating sub-surface features of a rock formation with acoustic sources generating conical broadcast signals |
Cung Vu, Christopher Skelt, Kurt Nihei, Paul A. Johnson, James A. Ten Cate +2 more |
2015-08-18 |
| 9110179 |
Integrated system for investigating sub-surface features of a rock formation |
Cung Vu, Christopher Skelt, Kurt Nihei, Paul A. Johnson, James A. Ten Cate +2 more |
2015-08-18 |
| 9046620 |
System and method for investigating sub-surface features and 3D imaging of non-linear property, compressional velocity VP, shear velocity VS and velocity ratio VP/VS of a rock formation |
Cung Vu, Christopher Skelt, Kurt Nihei, Paul A. Johnson, James A. Ten Cate +2 more |
2015-06-02 |
| 8942063 |
Data acquisition and processing system and method for investigating sub-surface features of a rock formation |
Cung Vu, Kurt Nihei, Paul A. Johnson, James A. Ten Cate, Pierre-Yves Le Bas +1 more |
2015-01-27 |
| 8923092 |
System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals |
Cung Vu, Kurt Nihei, Paul A. Johnson, James A. Ten Cate, Pierre-Yves Le Bas +1 more |
2014-12-30 |
| 8576661 |
Device and method for imaging of non-linear and linear properties of formations surrounding a borehole |
Paul A. Johnson, James A. TenCate, Pierre-Yves Le Bas, Cung Vu, Christopher Skelt |
2013-11-05 |
| 8553495 |
Device and method for imaging of non-linear and linear properties of formations surrounding a borehole |
Paul A. Johnson, James A. TenCate, Pierre-Yves Le Bas, Cung Vu, Christopher Skelt |
2013-10-08 |
| 8345509 |
System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole |
Cung Vu, Kurt Nihei, Denis P. Schmitt, Christopher Skelt, Paul A. Johnson +2 more |
2013-01-01 |
| 8289808 |
System and method to estimate compressional to shear velocity (VP/VS) ratio in a region remote from a borehole |
Cung Vu, Kurt Nihei, Denis P. Schmitt, Christopher Skelt, Paul A. Johnson +2 more |
2012-10-16 |
| 8116167 |
Method and system for generating a beam of acoustic energy from a borehole, and applications thereof |
Paul A. Johnson, James A. Ten Cate, Pierre-Yves Le Bas, Cung Vu, Kurt Nihei +2 more |
2012-02-14 |
| 6330827 |
Resonant nonlinear ultrasound spectroscopy |
Paul A. Johnson, James A. TenCate, Koen Van Den Abeele |
2001-12-18 |
