(19)

(11)

EP 2 171 382 A2

(12)

(88) Date of publication A3: 12.11.2009 (43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 08775363.8 (22) Date of filing: 28.07.2008

(51) International Patent Classification (IPC):  F25J 1/02(2006.01) E21B 36/00(2006.01) E21B 43/12(2006.01) E21B 43/01(2006.01) (86) International application number: PCT/EP2008/059845 (87) International publication number: WO 2009/016140 (05.02.2009 Gazette 2009/06)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 30.07.2007 EP 07113440 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)	(72) Inventors: PAULUS, Peter, Marie 1031 CM Amsterdam (NL) RUNBALK, David, Bertil 2596 HR The Hague (NL) (74) Representative: Matthezing, Robert Maarten et al Shell International Reseach Maatschappij B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)