(19)

(11)

EP 3 580 425 A1

(12)

(43) Date of publication: 18.12.2019 Bulletin 2019/51 (21) Application number: 18700131.8 (22) Date of filing: 09.01.2018

(51) International Patent Classification (IPC):  E21B 43/267(2006.01) (86) International application number: PCT/EP2018/050480 (87) International publication number: WO 2018/145842 (16.08.2018 Gazette 2018/33)

(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 TN (30) Priority: 08.02.2017 GB 201702025 (71) Applicant: Total E&P Danmark A/S 2100 Copenhagen (DK)	(72) Inventor: BUSK, Carsten 3250 Gilleleje (DK) (74) Representative: Docherty, Andrew John  Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)