(19)

(11)

EP 3 052 744 A2

(12)

(88) Date of publication A3: 28.05.2015 (43) Date of publication: 10.08.2016 Bulletin 2016/32 (21) Application number: 14746997.7 (22) Date of filing: 29.07.2014

(51) International Patent Classification (IPC):  E21B 23/03(2006.01) E21B 43/12(2006.01) (86) International application number: PCT/EP2014/066294 (87) International publication number: WO 2015/043801 (02.04.2015 Gazette 2015/13)

(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: 30.09.2013 GB 201317280 (71) Applicant: Swellfix B.V. 2288 GK Rijswijk (NL)	(72) Inventors: ANDERSON, Neil Altens Aberdeen AB12 3HT (GB) MACKIE, Colin Kingswells Aberdeen AB15 8GF (GB) (74) Representative: Docherty, Andrew John  Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)