(19)

(11)

EP 3 510 233 A2

(12)

(88) Date of publication A3: 19.04.2018 (43) Date of publication: 17.07.2019 Bulletin 2019/29 (21) Application number: 17780629.6 (22) Date of filing: 12.09.2017

(51) International Patent Classification (IPC):  E21B 7/04(2006.01) (86) International application number: PCT/EP2017/072883 (87) International publication number: WO 2018/046757 (15.03.2018 Gazette 2018/11)

(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: 12.09.2016 DE 102016217313 (71) Applicant: MTS PERFORATOR GMBH 37445 Walkenried (DE)	(72) Inventor: KÖGLER, Rüdiger 226670 Uplengen (DE) (74) Representative: Eisenführ Speiser  Patentanwälte Rechtsanwälte PartGmbB Postfach 10 60 78 28060 Bremen 28060 Bremen (DE)