AQUEOUS DISPLACEMENT FLUID INJECTION FOR ENHANCING OIL RECOVERY FROM A LIMESTONE OR DOLOMITE FORMATION - Patent 2396383

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EP 2 396 383 A1

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(43)	Date of publication:
	21.12.2011 Bulletin 2011/51

(21)	Application number: 10703469.6

(22)	Date of filing: 11.02.2010

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International Patent Classification (IPC):

C09K 8/58^(2006.01)

(86)	International application number:
	PCT/EP2010/051676

(87)	International publication number:
	WO 2010/092095 (19.08.2010 Gazette 2010/33)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

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Priority:

13.02.2009 EP 09152834
18.06.2009 EP 09163147

(71)	Applicant: Shell Internationale Research Maatschappij B.V.
	2596 HR The Hague (NL)

(72)	Inventor:
	LIGTHELM, Dirk, Jacob NL-2288 GD Rijswijk (NL)

(74)	Representative: Matthezing, Robert Maarten
	Shell International B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)

(54)	AQUEOUS DISPLACEMENT FLUID INJECTION FOR ENHANCING OIL RECOVERY FROM A LIMESTONE OR DOLOMITE FORMATION