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US 2015/0085605 A1Published application
Low Frequency Marine Acoustic Vibrator
AssigneePGS Geophysical AS
InventorStig Rune Lennart Tenghamn
Life of this patent
Estimating the term…
Abstract
Embodiments relate to marine acoustic vibrators that incorporate one or more piston plates that act on the surrounding water to produce acoustic energy. An example marine acoustic vibratory may comprise: a containment housing; a piston plate; a fixture coupled to the containment housing; a spring element coupled to the piston plate and the fixture; and a driver coupled to the piston plate and the fixture and configured to move the piston plate back and forth.
Claims25
A marine acoustic vibrator comprising:
- a containment housing;
- a piston plate;
- a fixture coupled to the containment housing;
- a spring element coupled to the piston plate and the fixture;
- and
- a driver coupled to the piston plate and the fixture, wherein the driver is configured to move the piston plate back and forth.
3 more elements
A marine acoustic vibrator comprising:
- a containment housing;
- a fixture coupled to the containment housing;
- a first piston plate coupled to the containment housing;
- a first driver disposed at least partially within the marine acoustic vibrator, the first driver being coupled to the fixture and the first piston plate, wherein the first driver is configured to move the first piston plate back and forth;
- a first pair of spring elements coupled to the first piston plate and the fixture, wherein the first pair of spring elements are positioned on opposite sides of the first driver from one another;
- a second piston plate coupled to the containment housing opposite the first piston plate;
- a second driver disposed at least partially within the marine acoustic vibrator, the second driver being coupled to the fixture and the second piston plate, wherein the second driver is configured to move the second piston plate back and forth;
- and
- a second pair of spring elements coupled to the second piston plate and the fixture, wherein the second pair of spring elements are positioned on opposite sides of the second driver from one another.
6 more elements
A method comprising:
- towing a marine acoustic vibrator in a body of water in conjunction with a marine seismic survey;
- and
- triggering the marine acoustic vibrator to cause one or more piston plates in the marine acoustic vibrator to move back and forth wherein one or more spring elements exert a biasing force against the one or more piston plates, the spring elements being coupled to the one or more piston plates and a fixture in the marine acoustic vibrator.
Dependencies are inferred from the claim text.