Method to improve use of polymers for injectivity profile control in enhanced oil recovery

A method for minimizing blockage in a zone of lesser permeability when injecting gels into a formation during profile control. A solidifiable gel containing a gel breaker is injected into the formation where it enters a zone of lesser and a zone of greater permeability. Said gel blocks pores in the...

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Bibliographische Detailangaben
Hauptverfasser:	HOEFNER, MARK L, JENNINGS, JR., ALFRED R
Format:	Patent
Sprache:	eng
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:	A method for minimizing blockage in a zone of lesser permeability when injecting gels into a formation during profile control. A solidifiable gel containing a gel breaker is injected into the formation where it enters a zone of lesser and a zone of greater permeability. Said gel blocks pores in the zone of lesser permeability. Another solidifiable gel lacking a gel breaker is injected into the zone of greater permeability where it subsequently solidifies. Said gel contained in the zone of lesser permeability liquefies thereby unblocking this zone. Afterwards, a water-flooding enhanced oil recovery method is directed into the zone of lesser permeability.