FILTER CAKE DEGRADATION COMPOSITIONS AND ASSOCIATED METHODS - Patent 1749142

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EP 1 749 142 A2

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(88)	Date of publication A3:
	27.04.2006

(43)	Date of publication:
	07.02.2007 Bulletin 2007/06

(21)	Application number: 05744933.2

(22)	Date of filing: 17.05.2005

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International Patent Classification (IPC):

E21B 37/04^(2006.01)

(86)	International application number:
	PCT/GB2005/001908

(87)	International publication number:
	WO 2005/113933 (01.12.2005 Gazette 2005/48)

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

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Priority:

19.05.2004 US 850422

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

(72)	Inventors:
	DAVIDSON, Eric, A. Cults Aberdeen AB15 9NQ (GB) LAIRD, Anuszka, M. Bridge of Don Aberdeen AB22 8AY (GB)

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

(54)	FILTER CAKE DEGRADATION COMPOSITIONS AND ASSOCIATED METHODS