Source for marine seismic acquisition and method
AssigneeCgg Services SAS
InventorsLaurent Ruet, Robert Dowle, Benoit Teyssandier
Life of this patent
Estimating the term…
Abstract
A method for generating acoustic waves under water includes actuating first and second pistons with an actuator system provided inside an enclosure of a source element, to generate a wave having a first frequency, and actuating the first and second pistons with a pressure mechanism attached to the enclosure, 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. The enclosure has first and second openings and the first and second pistons are configured to close the first and second openings.
Claims19
A method for generating acoustic waves under water, the method comprising:
- actuating a single piston with an actuator system provided inside an enclosure of a source element, to generate a wave having a first frequency,
- wherein the actuator system provided inside the enclosure is configured to translate a single shaft connected to the single piston, to generate the wave having the first frequency, and
- wherein the enclosure has a single opening and the single piston is configured to close the single opening, the piston separating a fluid inside the enclosure from ambient water.
A seismic vibro-acoustic source element configured to generate acoustic waves, the seismic vibro-acoustic source element comprising:
- an enclosure having a single opening;
- a single piston configured to close the single opening thereby separating a fluid inside the enclosure from ambient water;
- an actuator system provided inside the enclosure and configured to actuate the single piston to 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.
A seismic vibro-acoustic source element configured to generate acoustic waves, the seismic vibro-acoustic source element comprising:
- an enclosure having a single opening to the ambient;
- a single piston configured to close the single opening thereby separating a fluid inside the enclosure from ambient water;
- and
- an actuator system provided inside the enclosure and configured to linearly move the single piston back and forth, to generate the acoustic waves having a first frequency.
Dependencies are inferred from the claim text.