Subsea chemical storage system and method

A method for storing and injecting chemicals subsea, comprising providing a subsea storage tank 2, providing a liquid chemical 4 in the tank, such as a hydrate inhibitor, a scale inhibitor, a demulsifier, a corrosion inhibitor, a wax inhibitor or biocide, and providing a compressed gas such as nitro...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Audun Faanes, Knut Sveberg
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR BLASTING CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED CONSTRUCTIONS FIXED-CAPACITY GAS-HOLDERS HANDLING THIN OR FILAMENTARY MATERIAL HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PIPE-LINE SYSTEMS PIPE-LINES STORING STORING OF DISTRIBUTING GASES OR LIQUIDS TRANSPORTING VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	A method for storing and injecting chemicals subsea, comprising providing a subsea storage tank 2, providing a liquid chemical 4 in the tank, such as a hydrate inhibitor, a scale inhibitor, a demulsifier, a corrosion inhibitor, a wax inhibitor or biocide, and providing a compressed gas such as nitrogen in the tank, and subsequently discharging the liquid chemical from the tank and injecting it into a subsea pipeline, wherein the compressed gas maintains the liquid at or above a threshold pressure within the storage tank when the liquid is being stored and whilst it is being discharged.