(19)

(11)

EP 3 532 697 A2

(12)

(88) Date of publication A3: 31.05.2018 (43) Date of publication: 04.09.2019 Bulletin 2019/36 (21) Application number: 17808619.5 (22) Date of filing: 31.10.2017

(51) International Patent Classification (IPC):  E21B 33/03(2006.01) E21B 43/34(2006.01) E21B 33/068(2006.01) (86) International application number: PCT/NO2017/050279 (87) International publication number: WO 2018/080323 (03.05.2018 Gazette 2018/18)

(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: 31.10.2016 NO 20161719 (71) Applicant: BRI Cleanup AS 4313 Sandnes (NO)	(72) Inventor: MACLEOD, Alistair Iain 4070 Randaberg (NO) (74) Representative: Håmsø Patentbyrå AS  P.O. Box 171 4301 Sandnes 4301 Sandnes (NO)