Seismic wave generation systems and methods for cased wells

Source tunable array for ground roll reduction

Suppression of air-coupled noise produced by seismic vibrators

Sweep frequency vibrator

System and method for determining an azimuth of a seismic...

Three axis seismic vibrator

Ultrasonic cleaning apparatus

Ultrasonic transmission member

Vibration generator for seismic applications

Vibrator array, manufacturing method thereof, and ultrasonic...

Vibrator response linearization circuit

Vibrator seismic source having adaptive distortion limiting cont

Vibrator seismic source having distortion limiting control syste

Vibrator thermal-stress differential compensator

Vibroseis calibration technique and system