VISCOELASTIC SURFACTANT FLUIDS AND ASSOCIATED ACIDIZING METHODS - Patent 1863889

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EP 1 863 889 A1

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(43)	Date of publication:
	12.12.2007 Bulletin 2007/50

(21)	Application number: 06709731.1

(22)	Date of filing: 14.02.2006

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International Patent Classification (IPC):

C09K 5/00^(2006.01)

(86)	International application number:
	PCT/GB2006/000494

(87)	International publication number:
	WO 2006/087525 (24.08.2006 Gazette 2006/34)

(84)	Designated Contracting States:
	DE DK FR GB IT NL

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Priority:

15.02.2005 US 58475
15.02.2005 US 58611
15.02.2005 US 58612
15.02.2005 US 58660

(71)	Applicant: HALLIBURTON ENERGY SERVICES, INC.
	Duncan, OK 73533 (US)

(72)	Inventors:
	WELTON, Thomas D. Duncan, OK 73533 (US) LEWIS, Samuel J. Duncan, OK 73533 (US) FUNKHOUSER, Gary P. Duncan, OK 73533 (US)

(74)	Representative: Curtis, Philip Anthony et al
	A.A. Thornton & Co., 235 High Holborn London WC1V 7LE London WC1V 7LE (GB)

(54)	VISCOELASTIC SURFACTANT FLUIDS AND ASSOCIATED ACIDIZING METHODS