Apparatus and method for obtaining core samples

(19)

(11)

EP 1 251 240 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.03.2003 Bulletin 2003/10

(43)	Date of publication A2:
	23.10.2002 Bulletin 2002/43

(21)	Application number: 02251828.6

(22)	Date of filing: 14.03.2002

(51)	International Patent Classification (IPC)⁷: E21B 25/08

(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

(30)

Priority:

14.03.2001 GB 0106195

(71)	Applicant: CORPRO SYSTEMS LIMITED
	Aberdeenshire AB23 8UP (GB)

(72)	Inventor:
	Cravatte, Philippe Louis Aberdeen AB15 6YS (GB)

(74)	Representative: Allan, James Stewart et al
	Murgitroyd & Company 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)

(54)	Apparatus and method for obtaining core samples

(57) An apparatus and method for obtaining core samples from a wellbore includes bringing a substance (3) into contact with the core sample. The substance (3) is adapted to retain at least a portion of fluids recovered with the core sample. A receptacle (2) such as a core barrel (2) contains the substance and is inserted into the wellbore and receiving the core sample in the receptacle (2). The substance may be sealed in the receptacle by a dissolvable plug mechanism (10). The substance (3) is transformable between a highly viscous state and a substantially solid matrix.

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