(19)

(11)

EP 3 242 992 A1

(12)

(43) Date of publication: 15.11.2017 Bulletin 2017/46 (21) Application number: 15841119.9 (22) Date of filing: 30.12.2015

(51) International Patent Classification (IPC):  E21B 21/06(2006.01) (86) International application number: PCT/NL2015/050919 (87) International publication number: WO 2016/111616 (14.07.2016 Gazette 2016/28)

(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 Designated Validation States: MA MD (30) Priority: 05.01.2015 NL 2014082 (71) Applicant: Meto Beheer B.V. 9531 JR Borger (NL)	(72) Inventor: MEIJERS, Alain-Raymond Jean-Paul Richard 9531 JR Borger (NL) (74) Representative: EP&C  P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)