FORMATION WATER INFLOW SHUTOFF COMPOSITION

FIELD: oil and gas production. ^ SUBSTANCE: object of invention is to limit water inflow in injection well to increase oil recovery of formations. Composition according to invention containing clay (0.1-0.6%), biopolymer (0.1-0.25%), and water further contains 0.2-0.5% of polyacrylamide modified by...

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Bibliographische Detailangaben
Hauptverfasser:	ROMANTSEV MIKHAIL FEDOROVICH, MEJNTSER VALERIJ OTTOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ADHESIVES CHEMISTRY DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	FIELD: oil and gas production. ^ SUBSTANCE: object of invention is to limit water inflow in injection well to increase oil recovery of formations. Composition according to invention containing clay (0.1-0.6%), biopolymer (0.1-0.25%), and water further contains 0.2-0.5% of polyacrylamide modified by a radiation-chemical method, said biopolymer being xanthan gum produced by bacterium strains Xanthomo and Campestrin in a hydrocarbon medium. ^ EFFECT: improved quality of grouting composition and achieved high grouting characteristics. ^ 1 tbl