Correcting eccentering effect in pulse-echo imaging

Acoustic system and method for characterizing granular media

System and method for generating 3D images of non-linear properties of rock formation using surface seismic or surface to borehole seismic or both

Method for acoustic imaging of the earth's subsurface using non-linear signal generation and detection

System and method for generating micro-seismic events and characterizing properties of a medium with non-linear acoustic interactions

Data acquisition and processing system and method for investigating sub-surface features of a rock formation

System and method for investigating sub-surface features of a rock formation using compressional acoustic sources

System and method for investigating sub-surface features of a rock formation with acoustic sources generating conical broadcast signals

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

System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals

Integrated system for investigating sub-surface features of a rock formation

System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole

System and method to estimate compressional to shear velocity (VP/VS) ratio in a region remote from a borehole

Superheterodyne seismic vibrator and method

System and method for signals transmission in complex scattering environments using interaction of the waves with a nonlinear object