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(11)

EP 3 294 980 A1

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(43) Date of publication: 21.03.2018 Bulletin 2018/12 (21) Application number: 16791866.3 (22) Date of filing: 11.05.2016

(51) International Patent Classification (IPC):  E21B 25/00(2006.01) E21B 25/02(2006.01) E21B 10/02(2006.01) (86) International application number: PCT/CA2016/050538 (87) International publication number: WO 2016/179701 (17.11.2016 Gazette 2016/46)

(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: 11.05.2015 US 201562159601 P (71) Applicant: Dynamik Equipment Inc. Rouyn-Noranda, Québec J9X 6T3 (CA)	(72) Inventors: OUELLET, François Rouyn-Noranda, Québec J6Y 0E5 (CA) GUILLEMETTE, Maxime Rouyn-Noranda, Québec J9X 5L8 (CA) (74) Representative: Modiano, Micaela Nadia  Modiano & Partners Thierschstrasse 11 80538 München 80538 München (DE)