A VALVE AND A METHOD FOR CLOSING FLUID COMMUNICATION BETWEEN A WELL AND A PRODUCTION STRING, AND A SYSTEM COMPRISING THE VALVE

A VALVE AND A METHOD FOR CLOSING FLUID COMMUNICATION BETWEEN A WELL AND A PRODUCTION STRING, AND A SYSTEM COMPRISING THE VALVE

A valve, a system and a method are for closing fluid communication between a well and a production string when a content of an undesired fluid in the fluid flow exceeds a predetermined level. The valve has a primary flow channel having a primary inlet through a flow barrier, and a low pressure porti...

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Hauptverfasser: KILLIE, Rune, BRATTLI, Anders Beyer
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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BRATTLI, Anders Beyer
description A valve, a system and a method are for closing fluid communication between a well and a production string when a content of an undesired fluid in the fluid flow exceeds a predetermined level. The valve has a primary flow channel having a primary inlet through a flow barrier, and a low pressure portion; a secondary flow channel having a secondary inlet through the flow barrier and provided with a flow restrictor; a chamber connected to the secondary flow channel; a piston for opening and closing the primary flow channel; and an inflow control element movable in response to a density of a fluid. The inflow control element is exposed to the fluid flow upstream of the flow barrier and moves to close the secondary inlet when the content of the undesired fluid exceeds the predetermined level, activating the piston and closing the valve.
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title A VALVE AND A METHOD FOR CLOSING FLUID COMMUNICATION BETWEEN A WELL AND A PRODUCTION STRING, AND A SYSTEM COMPRISING THE VALVE
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