Controlling the buoyancy of a mass of buoyant spheres
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United States of America Patent
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Mar 2, 2021
Grant Date -
Jun 13, 2019
app pub date -
Jun 8, 2017
filing date -
Jun 10, 2016
priority date (Note) -
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Abstract
A buoyant element for conferring buoyancy on a subsea structure or apparatus has a floodable envelope that contains a mass of buoyant spheres and a void extending between the spheres. Openings penetrate the envelope, in fluid communication with the void. One or more one destruction devices are arranged to destroy at least one of the spheres within the envelope in use. After the envelope has been submerged and flooded to fill the void between the spheres with water, the destruction devices are imploded to create shockwaves that expand the void by sympathetic implosion of the spheres. Additional water is admitted into the envelope through the openings to fill the expanding void, thereby ballasting the buoyant element.
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