RISER FLOW CONTROL
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United States of America Patent
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Issued Date -
Jun 2, 2016
app pub date -
Jul 9, 2014
filing date -
Jul 9, 2014
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Abstract
A deep sea mining method includes: excavating matter at a bottom of a body of water; operating a riser system for transporting a slurry of matter and water; transporting the slurry from the bottom of a body of water upwards to a slurry processing base; and maintaining a controlled riser system pressure higher than the environmental pressure inside the riser system for avoiding forming of gas and expanding of gas contained in the slurry during transporting the slurry.
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