(19)

(11)

EP 2 931 830 A1

(12)

(43) Date of publication: 21.10.2015 Bulletin 2015/43 (21) Application number: 13803080.4 (22) Date of filing: 13.12.2013

(51) International Patent Classification (IPC):  C09K 8/594(2006.01) F25J 3/04(2006.01) F23C 10/01(2006.01) E21B 43/16(2006.01) C01B 3/36(2006.01) (86) International application number: PCT/EP2013/076626 (87) International publication number: WO 2014/091024 (19.06.2014 Gazette 2014/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 13.12.2012 EP 12196893 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)	(72) Inventors: POORTE, Raimo Edwin Gregor NL-2288 GS Rijswijk (NL) SPRACHMANN, Gerald NL-1031 HW Amsterdam (NL) (74) Representative: Matthezing, Robert Maarten et al Shell International B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)