(19)

(11)

EP 3 167 145 A1

(12)

(43) Date of publication: 17.05.2017 Bulletin 2017/20 (21) Application number: 15819749.1 (22) Date of filing: 07.07.2015

(51) International Patent Classification (IPC):  E21B 10/32(2006.01) E21B 7/28(2006.01) (86) International application number: PCT/DK2015/050205 (87) International publication number: WO 2016/004954 (14.01.2016 Gazette 2016/02)

(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 (30) Priority: 07.07.2014 DK 201470422 (71) Applicant: Advancetech ApS 6771 Gredstedbro (DK)	(72) Inventor: SOLEM, Sigurd DK-6771 Gredstedbro (DK) (74) Representative: Olesen, Birthe Bjerregaard et al Patrade A/S Fredens Torv 3A 8000 Aarhus C 8000 Aarhus C (DK)