DRILL PIPE TORQUE-REDUCTION AND PROTECTION APPARATUS - Patent 1254299

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EP 1 254 299 A2

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(88)	Date of publication A3:
	31.01.2002

(43)	Date of publication:
	06.11.2002 Bulletin 2002/45

(21)	Application number: 01904095.5

(22)	Date of filing: 08.02.2001

(51)	International Patent Classification (IPC)⁷: E21B 17/00

(86)	International application number:
	PCT/GB0100/486

(87)	International publication number:
	WO 0105/9249 (16.08.2001 Gazette 2001/33)

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

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Priority:

10.02.2000 GB 0002916

(71)	Applicant: Stable Services Limited
	Aberdeen, AB23 8BQ (GB)

(72)	Inventors:
	STEWART, Arthur Deacey Potterton,Aberdeenshire AB23 8UG (GB) CRAIG, Mark William Aberdeen AB15 6YJ (GB)

(74)	Representative: Purdy, Hugh Barry et al
	Murgitroyd & Company165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)

(54)	DRILL PIPE TORQUE-REDUCTION AND PROTECTION APPARATUS