HOCHTEMPERATURPROFILMODIFIZIERUNGSMITTEL UND VERFAHREN ZU DEREN VERWENDUNG

A new and improved composition and method for profile modification of subterranean formations characterized by high reservoir temperatures and/or harsh brine conditions are disclosed. The new and improved profile modification agents comprise a gelable composition comprising: (a) water; (b) a water-t...

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Hauptverfasser:	CICCHIELLO, JAMES V, ROBUSTELLI, ALBERT G, RYLES, RODERICK GLYN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES
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creator	CICCHIELLO, JAMES V ROBUSTELLI, ALBERT G RYLES, RODERICK GLYN
description	A new and improved composition and method for profile modification of subterranean formations characterized by high reservoir temperatures and/or harsh brine conditions are disclosed. The new and improved profile modification agents comprise a gelable composition comprising: (a) water; (b) a water-thickening and crosslinkable amount of a water-dispersible copolymer comprising from about 30 to about 99 mol % of units derived from at least one N-sulfohydrocarbon substituted acrylamide monomer copolymerized with from about 1 to about 70 mol % of units derived from at least one other monomer bearing a carboxyl group or a carboxyl precursor group; and (c) an amount of a polyvalent metal sufficient to crosslink the polymer to form a stable gel. The profile modification agents are effective to alter the permeability of preselected portions of an underground formation by forming strong gels which are stable in harsh brine at temperatures of up to about 120 DEG C. The composition and method are particularly adapted for use in enhanced oil recovery operations.
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subjects	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES
title	HOCHTEMPERATURPROFILMODIFIZIERUNGSMITTEL UND VERFAHREN ZU DEREN VERWENDUNG
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