SYSTEM CONTAINING EXPENDIBLE ISOLATION VALVE WITH FRANGIBLE SEALING MEMBER, SEAT ARRANGEMENT AND METHOD FOR USE

SYSTEM CONTAINING EXPENDIBLE ISOLATION VALVE WITH FRANGIBLE SEALING MEMBER, SEAT ARRANGEMENT AND METHOD FOR USE

An isolation valve for a downhole well completion system having a one piece frangible, ceramic sealing element and an extrusion resistant resiliently faced valve seat and a method for the use thereof is presented. Said sealing element is biased to the closed position and rotatable within a sealing e...

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Hauptverfasser: PEARCE, JOSEPH L, ECHOLS, III, RALPH H, PATTERSON, DANIEL L
Format: Patent
Sprache:eng
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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creator PEARCE
JOSEPH L
ECHOLS, III
RALPH H
PATTERSON
DANIEL L
description An isolation valve for a downhole well completion system having a one piece frangible, ceramic sealing element and an extrusion resistant resiliently faced valve seat and a method for the use thereof is presented. Said sealing element is biased to the closed position and rotatable within a sealing element chamber from an open position during run in to a closed position as a result of the withdrawal of a wash pipe and a protector tube from the valve bore. Said frangible sealing element cooperates with said extrusion resistant valve seat to provide a reliable pressure resistant seal. After recovery of completion fluids from the well bore and pressure testing of the production string, the frangible sealing element is shattered by impacting with a tooth-faced blind box hammer.
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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 SYSTEM CONTAINING EXPENDIBLE ISOLATION VALVE WITH FRANGIBLE SEALING MEMBER, SEAT ARRANGEMENT AND METHOD FOR USE
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