(19)

(11)

EP 2 732 120 A2

(12)

(88) Date of publication A3: 07.11.2013 (43) Date of publication: 21.05.2014 Bulletin 2014/21 (21) Application number: 12740887.0 (22) Date of filing: 15.07.2012

(51) International Patent Classification (IPC):  E21B 7/06(2006.01) (86) International application number: PCT/EG2012/000026 (87) International publication number: WO 2013/007269 (17.01.2013 Gazette 2013/03)

(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 (30) Priority: 14.07.2011 GB 201112104 (71) Applicant: Tercel IP Ltd. Tortola (VG)	(72) Inventors: ZAKI, Magdy Cairo (EG) IBRAHIM, Waleed Cairo (EG) AGUIB, Karim Cairo (EG) (74) Representative: Ostyn, Frans et al KOB NV Patents President Kennedypark 31C 8500 Kortrijk 8500 Kortrijk (BE)