(19)

(11)

EP 2 867 452 A1

(12)

(43) Date of publication: 06.05.2015 Bulletin 2015/19 (21) Application number: 13809897.5 (22) Date of filing: 20.06.2013

(51) International Patent Classification (IPC):  E21B 41/10(2006.01) E21B 41/00(2006.01) E21B 41/08(2006.01) (86) International application number: PCT/NO2013/050114 (87) International publication number: WO 2014/003572 (03.01.2014 Gazette 2014/01)

(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: 29.06.2012 NO 20120758 (71) Applicant: Aker Subsea AS 1325 Lysaker (NO)	(72) Inventor: KEKARAINEN, Jarmo N-SE-81832 Valbo (NO) (74) Representative: Protector IP Consultants AS  Oscarsgate 20 0352 Oslo 0352 Oslo (NO)