(19)

(11)

EP 1 700 071 A1

(12)

(43) Date of publication: 13.09.2006 Bulletin 2006/37 (21) Application number: 04798684.9 (22) Date of filing: 25.11.2004

(51) International Patent Classification (IPC):  F25J 3/02(2006.01) F17C 9/04(2006.01) (86) International application number: PCT/GB2004/004988 (87) International publication number: WO 2005/059459 (30.06.2005 Gazette 2005/26)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 18.12.2003 GB 0329343 (71) Applicant: BP EXPLORATION OPERATING COMPANY LIMITED Sunbury-on-Thames TW16 7BP (GB)	(72) Inventors: HARWOOD, David Andrew Hemel Hempstead, Herts HP3 0AB (GB) WINSTANLEY, Michael John Amersham, Bucks HP6 6EE (GB) (74) Representative: Hymers, Ronald Robson  BP INTERNATIONAL LIMITED Patents Division Chertsey Road Sunbury-on-Thames Middlesex, TW16 7LN Sunbury-on-Thames Middlesex, TW16 7LN (GB)