METHODS FOR MINIMIZING FLUID LOSS TO AND DETERMINING THE LOCATIONS OF LOST CIRCULATION ZONES - Patent 2358973

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EP 2 358 973 A2

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(88)	Date of publication A3:
	15.07.2010

(43)	Date of publication:
	24.08.2011 Bulletin 2011/34

(21)	Application number: 09828052.2

(22)	Date of filing: 13.11.2009

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International Patent Classification (IPC):

E21B 33/13^(2006.01)

E21B 33/138^(2006.01)

(86)	International application number:
	PCT/US2009/064327

(87)	International publication number:
	WO 2010/059511 (27.05.2010 Gazette 2010/21)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

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Priority:

19.11.2008 US 116167 P

(71)	Applicant: M-I L.L.C.
	Houston, TX 77072 (US)

(72)	Inventor:
	DAKIN, Eugene Langdon, Alberta TO J 1X3 (CA)

(74)	Representative: Giovannini, Francesca et al
	Osha Liang 32, avenue de l'Opéra 75002 Paris 75002 Paris (FR)

(54)	METHODS FOR MINIMIZING FLUID LOSS TO AND DETERMINING THE LOCATIONS OF LOST CIRCULATION ZONES