Gas spring compensation marine acoustic vibrator
First Claim
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1. A marine acoustic vibrator, comprising:
- an outer shell; and
a variable gas flow restrictor disposed within the outer shell;
wherein the variable gas flow restrictor comprises a first plate comprising holes, and a second plate comprising holes, the second plate being moveable to at least partially cover the holes in the first plate;
wherein the marine acoustic vibrator has a resonance frequency selectable based at least in part on the variable gas flow restrictor.
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Abstract
Embodiments related to restriction of gas flow in a marine acoustic vibrator to compensate for gas spring effects. An embodiment provides a marine acoustic vibrator, comprising: an outer shell; and a variable gas flow restrictor disposed within the outer shell; wherein the marine acoustic vibrator has a resonance frequency selectable based at least in part on the variable gas flow restrictor.
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Citations
17 Claims
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1. A marine acoustic vibrator, comprising:
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an outer shell; and a variable gas flow restrictor disposed within the outer shell;
wherein the variable gas flow restrictor comprises a first plate comprising holes, and a second plate comprising holes, the second plate being moveable to at least partially cover the holes in the first plate;wherein the marine acoustic vibrator has a resonance frequency selectable based at least in part on the variable gas flow restrictor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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towing an acoustic vibrator in a body of water; triggering the acoustic vibrator to generate acoustic energy in the body of water; restricting gas flow in the acoustic vibrator to control a first resonance frequency of the acoustic vibrator, wherein restricting gas flow in the acoustic vibrator comprises moving a plate to at least partially obstruct holes in another plate; and detecting the acoustic energy originating from the acoustic vibrator. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification