Air-spring compensation in a piston-type marine vibrator
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United States of America Patent
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Nov 26, 2019
Grant Date -
Sep 8, 2016
app pub date -
May 12, 2016
filing date -
Sep 20, 2013
priority date (Note) -
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Abstract
Embodiments relate to the restriction of gas flow in a piston-type marine vibrator to compensate for air-spring effects. An embodiment provides marine vibrator comprising: a containment housing; a piston plate; a fixture coupled to the containment housing; a mechanical spring element coupled to the piston plate and to the fixture; a driver coupled to the piston plate and to the fixture; and a variable gas flow restrictor disposed in an interior volume of the marine vibrator, wherein the marine vibrator has a resonance frequency selectable based at least in part on the variable gas flow restrictor.
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