(19)

(11)

EP 3 338 049 A1

(12)

(43) Date of publication: 27.06.2018 Bulletin 2018/26 (21) Application number: 16756650.4 (22) Date of filing: 12.08.2016

(51) International Patent Classification (IPC):  F42B 1/028(2006.01) E21B 43/117(2006.01) F42B 3/08(2006.01) (86) International application number: PCT/EP2016/069293 (87) International publication number: WO 2017/029240 (23.02.2017 Gazette 2017/08)

(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: 18.08.2015 US 201562206496 P (71) Applicant: DynaEnergetics GmbH & Co. KG 53840 Troisdorf (DE)	(72) Inventors: MCNELIS, Liam 53227 Bonn (DE) SHAHINPOUR, Arash 53840 Troisdorf (DE) MÜLLER, Jörg 53127 Bonn-Lengsdorf (DE) (74) Representative: Sanger, Phillip Simon  Vault IP Limited Cavendish House 39 Waterloo Street Birmingham B2 5PP Birmingham B2 5PP (GB)