METHOD AND APPARATUS FOR DETERMINING THE HIGH SIDE OF A DRILL STRING DURING GAMMA MWD OPERATIONS AND CORRELATING GAMMA EVENTS THEREWITH - Patent 1373938

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EP 1 373 938 A1

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(43)	Date of publication:
	02.01.2004 Bulletin 2004/01

(21)	Application number: 02733787.2

(22)	Date of filing: 30.01.2002

(51)	International Patent Classification (IPC)⁷: G01V 3/30, G01V 3/38

(86)	International application number:
	PCT/US2002/002634

(87)	International publication number:
	WO 2002/082124 (17.10.2002 Gazette 2002/42)

(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:

06.04.2001 US 828397

(71)	Applicant: Halliburton Energy Services, Inc.
	Carrollton, TX 75006 (US)

(72)	Inventors:
	BARTEL, Roger, P. Houston, TX 77060 (US) LARRONDE, Michael Houston, TX 77062 (US)

(74)	Representative: Jenkins, Richard Gavin
	Loven and Co,Quantum House,30 Tentercroft Street Lincoln LN5 7DB Lincoln LN5 7DB (GB)

(54)	METHOD AND APPARATUS FOR DETERMINING THE HIGH SIDE OF A DRILL STRING DURING GAMMA MWD OPERATIONS AND CORRELATING GAMMA EVENTS THEREWITH