Patent ID: 9170342
Filing Date: 2015-10-27
Classification: G01V

Abstract:
1. A vibratory seismic source for delivering acoustic energy into the ground for seismic prospecting, the source comprising: a) a chassis; b) a generator for creating electric power mounted to the chassis; c) about 100 to 5,000 linear motors arranged in a grid, carried by a frame, and positioned to depend from the chassis and wherein each linear motor includes a rod that is arranged to move generally vertically to contact the ground with a lower end of the rod; d) a control system for controlling movement of the rods such that the rods vibrate the ground and deliver acoustic energy into the ground; and e) an active isolation system arranged between the grid of linear motors and the chassis for absorbing at least a portion of the acoustic energy that is created by the linear motors and preventing the acoustic energy from conveying excessive vibration to the chassis and other portions of the seismic source.