DOWNHOLE SAFETY VALVE FOR CENTRAL CIRCULATION COMPLETION SYSTEM - Patent 1570153

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EP 1 570 153 A1

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(43)	Date of publication:
	07.09.2005 Bulletin 2005/36

(21)	Application number: 02793981.8

(22)	Date of filing: 21.11.2002

(51)	International Patent Classification (IPC)⁷: E21B 33/035, E21B 33/04, E21B 34/02, E21B 43/00

(86)	International application number:
	PCT/US2002/037395

(87)	International publication number:
	WO 2004/048748 (10.06.2004 Gazette 2004/24)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
	Designated Extension States:
	AL LT LV MK RO SI

(71)	Applicant: FMC Technologies, Inc.
	Chicago, IL 60601 (US)

(72)	Inventor:
	SKEELS, Harold, B. Kingwood, TX 77345 (US)

(74)	Representative: Hammler, Martin Franz et al
	Phillips & Leigh 5 Pemberton Row London EC4A 3BA London EC4A 3BA (GB)

(54)	DOWNHOLE SAFETY VALVE FOR CENTRAL CIRCULATION COMPLETION SYSTEM