(19)

(11)

EP 2 358 992 A1

(12)

(43) Date of publication: 24.08.2011 Bulletin 2011/34 (21) Application number: 09728376.6 (22) Date of filing: 26.03.2009

(51) International Patent Classification (IPC):  F03B 13/06(2006.01) F03B 13/10(2006.01) F03B 13/08(2006.01) (86) International application number: PCT/NO2009/000111 (87) International publication number: WO 2009/123465 (08.10.2009 Gazette 2009/41)

(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 MK MT NL NO PL PT RO SE SI SK TR (30) Priority: 02.04.2008 NO 20081642 (71) Applicant: Statoil ASA 4035 Stavanger (NO)	(72) Inventor: BEKKEN, Bjørn NO-4013 Stavanger (NO) (74) Representative: Roman Ekstedt, Måns  Zacco Norway AS P.O. Box 2003 Vika 0125 Oslo 0125 Oslo (NO)