METHOD OF CREATING A ZONAL ISOLATION IN AN UNDERGROUND WELLBORE

METHOD OF CREATING A ZONAL ISOLATION IN AN UNDERGROUND WELLBORE

A method of creating a zonal isolation above a target zone (4) in an underground wellbore (1) comprises: inserting a slurry injection tubing (3) into the wellbore; arranging within an annular space surrounding said tubing an particle accumulation means (5), such as an expandable screen or an area wh...

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Hauptverfasser: CORNELISSEN, ERIK KERST, WORRALL, ROBERT NICHOLAS, BLOESS, ANDREAS, BOSMA, MARTIN GERARD RENE, KENTER, CORNELIS JAN, GUNNINGHAM, MICHAEL CASPAR
Format: Patent
Sprache:eng ; fre
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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 CORNELISSEN, ERIK KERST
WORRALL, ROBERT NICHOLAS
BLOESS, ANDREAS
BOSMA, MARTIN GERARD RENE
KENTER, CORNELIS JAN
GUNNINGHAM, MICHAEL CASPAR
description A method of creating a zonal isolation above a target zone (4) in an underground wellbore (1) comprises: inserting a slurry injection tubing (3) into the wellbore; arranging within an annular space surrounding said tubing an particle accumulation means (5), such as an expandable screen or an area where the slurry velocity is reduced; and pumping a slurry comprising a carrier fluid and granular material down via the slurry injection tubing (3) and the target zone (4) and then up into the annular space, such that at lea st some granular material accumulates and forms an elongate zonal isolation (10 ) in the annular space between the target zone and the particle accumulation means, which zonal isolation is removable and exerts a limited radial force to the surrounding formation, thereby reducing the risk of formation damage.
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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 METHOD OF CREATING A ZONAL ISOLATION IN AN UNDERGROUND WELLBORE
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