METHOD OF BOTTOM WATER SHUTOFF IN POROUS-FRACTURED RESERVOIR

FIELD: oil-gas producing industry; applicable in restriction of formation water inflow to well, and some other operations involved in well construction and operation. SUBSTANCE: method includes injection of composition based on hydrocarbon fluid with addition of surfactant. Said addition is injected...

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Bibliographische Detailangaben
Hauptverfasser:	TOKUNOV V.I, FILIPPOV A.G, BULDAKOV S.V, POLJAKOV G.A, PROKOPENKO V.A, POLJAKOV I.G, TSKHAJ V.A
Format:	Patent
Sprache:	eng ; rus
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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Beschreibung
Zusammenfassung:	FIELD: oil-gas producing industry; applicable in restriction of formation water inflow to well, and some other operations involved in well construction and operation. SUBSTANCE: method includes injection of composition based on hydrocarbon fluid with addition of surfactant. Said addition is injected together with the first portion of hydrocarbon fluid, and injected with the last portion of hydrocarbon fluid is rubber crumb. In this case, formation pressure gradient is periodically increased and well is allowed to stand for at least 72 h. Surfactant is added in excessive concentration to ensure composition surface tension on hydrocarbon-formation water interface not more 2.103 N/m. EFFECT: higher efficiency of operations involved in bottom water shutoff to porous-fractured reservoir. 3 cl, 1 tbl