RISER FLOW CONTROL

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 press...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VAN DOESBURG, JOHANNES BARTHOLOMEUS, LUCIEER, PIETER ABRAHAM
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DREDGING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING MINING MINING OR QUARRYING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SOIL SHIFTING
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Beschreibung
Zusammenfassung:	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.