Source for marine seismic acquisition and method

摘要

Method, source and seismic vibro-acoustic source element configured to generate acoustic waves under water. The seismic vibro-acoustic source element includes an enclosure having first and second openings; first and second pistons configured to close the first and second openings; an actuator system provided inside the enclosure and configured to actuate the first and second pistons to generate a wave having first frequency; and a pressure mechanism attached to the enclosure and configured to control a pressure of a fluid inside the enclosure such that a pressure of the fluid is substantially equal to an ambient pressure of the enclosure.

主权项

1. A seismic vibro-acoustic source element configured to generate acoustic waves, the seismic vibro-acoustic source element comprising:
an enclosure having first and second openings; first and second pistons configured to close the first and second openings; first and second actuator systems provided inside the enclosure, in first and second chambers, respectively, the first and second chambers being separated from each other, the first and second actuator systems having first and second shafts connected to the first and second pistons, respectively, and being configured to translate the first and second shafts so that the first and second pistons generate a wave having a first frequency; and a pressure mechanism attached to the enclosure and configured to control a pressure of a fluid inside the enclosure such that a pressure of the fluid is substantially equal to an ambient pressure of the enclosure.