(19)

(11)

EP 2 948 617 A2

(12)

(88) Date of publication A3: 04.12.2014 (43) Date of publication: 02.12.2015 Bulletin 2015/49 (21) Application number: 14700367.7 (22) Date of filing: 13.01.2014

(51) International Patent Classification (IPC):  E21B 43/12(2006.01) E21B 43/26(2006.01) E21B 34/10(2006.01) E21B 43/14(2006.01) E21B 34/08(2006.01) E21B 43/00(2006.01) (86) International application number: PCT/EP2014/050448 (87) International publication number: WO 2014/114510 (31.07.2014 Gazette 2014/31)

(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: 25.01.2013 GB 201301346 (71) Applicant: Maersk Olie & Gas A/S 1263 Copenhagen K (DK)	(72) Inventors: LUMBYE, Peter DK-2760 Malov (DK) LAURITZEN, Jon Eric Sugarland, Texas 77479 (US) (74) Representative: Docherty, Andrew John  Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)