(19)

(11)

EP 2 997 217 A2

(12)

(88) Date of publication A3: 17.09.2015 (43) Date of publication: 23.03.2016 Bulletin 2016/12 (21) Application number: 13886530.8 (22) Date of filing: 17.11.2013

(51) International Patent Classification (IPC):  E21B 10/60(2006.01) E21B 34/06(2006.01) E21B 10/61(2006.01) (86) International application number: PCT/IB2013/003233 (87) International publication number: WO 2014/195760 (11.12.2014 Gazette 2014/50)

(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 (30) Priority: 17.05.2013 US 201313897348 (71) Applicant: Tahoun, Ahmed Moustafa Agawam, MA 01001 (US)	(72) Inventors: KAFAFY, Raed Kuala Lumpur 57000 (MY) JAWAMIR, Karam Kuala Lumpur 57000 (MY) ALDHEEB, Mohammed Kuala Lumpur 57000 (MY) KHALIL, Abdul Mushawwir Kuala Lumpur 57000 (MY) (74) Representative: Lemcke, Brommer & Partner Patentanwälte Partnerschaft mbB  Bismarckstraße 16 76133 Karlsruhe 76133 Karlsruhe (DE)