Forhindring av stromming gjennom undergrunnsomrader

Compositions useful for preventing the flow of water or gas, or both, through a subterranean zone having a high temperature and a depth such that a long pumping time is required to place a sealing composition therein, comprise water, a cross-linking agent which comprises chitosan and a selected wate...

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Hauptverfasser: EOFF LARRY S, BAIREDDY REDDY R
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Sprache:nor
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creator EOFF LARRY S
BAIREDDY REDDY R
description Compositions useful for preventing the flow of water or gas, or both, through a subterranean zone having a high temperature and a depth such that a long pumping time is required to place a sealing composition therein, comprise water, a cross-linking agent which comprises chitosan and a selected water-soluble polymer which reacts with the cross-linking agent and forms a sealing gel which is stable for a desired period of time at the temperature of the zone and has a pumping time before gelation in the presence of the cross-linking agent whereby the composition can be pumped to the depth of the zone and placed therein.
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subjects ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
title Forhindring av stromming gjennom undergrunnsomrader
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