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(11)

EP 3 548 694 A1

(12)

(43) Date of publication: 09.10.2019 Bulletin 2019/41 (21) Application number: 17804199.2 (22) Date of filing: 27.11.2017

(51) International Patent Classification (IPC):  E21B 41/00(2006.01) B63G 8/00(2006.01) B63C 11/52(2006.01) E21B 41/04(2006.01) (86) International application number: PCT/EP2017/080554 (87) International publication number: WO 2018/099869 (07.06.2018 Gazette 2018/23)

(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: 30.11.2016 GB 201620261 (71) Applicant: GE Oil & Gas UK Limited Nailsea Bristol BS48 1BS (GB)	(72) Inventor: MYKURA, Alistair Aberdeen Aberdeenshire AB23 8GD (GB) (74) Representative: Illingworth-Law, William Illingworth  Baker Hughes, A GE Company The Ark 201 Talgarth Road Hammersmith London W6 8BJ London W6 8BJ (GB)