COMPRESSIBLE OBJECTS HAVING A PREDETERMINED INTERNAL PRESSURE COMBINED WITH A DRILLING TO FORM A VARIABLE DENSITY DRILLING MUD - Patent 2032796

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EP 2 032 796 A1

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(43)	Date of publication:
	11.03.2009 Bulletin 2009/11

(21)	Application number: 07776780.4

(22)	Date of filing: 04.05.2007

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International Patent Classification (IPC):

E21B 23/02^(2006.01)

E21B 43/10^(2006.01)

(86)	International application number:
	PCT/US2007/010905

(87)	International publication number:
	WO 2007/145733 (21.12.2007 Gazette 2007/51)

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

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Priority:

07.06.2006 US 811620 P

(71)	Applicant: ExxonMobil Upstream Research Company
	Houston TX 77252-2189 (US)

(72)	Inventors:
	POLIZZOTTI, Richard, S. Milford, NJ 08848-2153 (US) PEIFFER, Dennis, G. Annandale, NJ 08801 (US) GUPTA, Ramesh Berkeley Heights, NJ 07922 (US) POKUTYLOWICZ, Norman, M. Houston, TX 77057 (US) CARSTENSEN, Barbara Annandale, NJ 08801 (US) LUTON, Michael, J. Bedminster, NJ 07921 (US) SPIECKER, P., Matthew Manvel, TX 77578 (US)

(74)	Representative: Pols, Ronald Maarten
	ExxonMobil Chemical Europe Inc. IP Law Shared Services P.O. Box 105 Hermeslaan 2 1831 Machelen 1831 Machelen (BE)

(54)	COMPRESSIBLE OBJECTS HAVING A PREDETERMINED INTERNAL PRESSURE COMBINED WITH A DRILLING TO FORM A VARIABLE DENSITY DRILLING MUD