(19)

(11)

EP 1 848 946 A1

(12)

(43) Date of publication: 31.10.2007 Bulletin 2007/44 (21) Application number: 06709671.9 (22) Date of filing: 07.02.2006

(51) International Patent Classification (IPC):  F25J 3/02(2006.01) F17C 9/02(2006.01) (86) International application number: PCT/GB2006/000429 (87) International publication number: WO 2006/087520 (24.08.2006 Gazette 2006/34)

(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 NL PL PT RO SE SI SK TR (30) Priority: 16.02.2005 GB 0503213 (71) Applicant: BP EXPLORATION OPERATING COMPANY LIMITED Sunbury-on-Thames, Middlesex TW16 7BP (GB)	(72) Inventors: Phillips, Lee Alan Cheadle Cheshire SK8 3JF (GB) Scott, Lee Cheshire SK12 1QE (GB) (74) Representative: Collins, Frances Mary  BP International Limited Global Patents & Technology Law (Central) Chertsey Road Sunbury-on-Thames Middlesex TW16 7LN Middlesex TW16 7LN (GB)