(19)

(11)

EP 2 240 667 A2

(12)

(88) Date of publication A3: 11.03.2010 (43) Date of publication: 20.10.2010 Bulletin 2010/42 (21) Application number: 09700072.3 (22) Date of filing: 01.01.2009

(51) International Patent Classification (IPC):  E21B 43/16(2006.01) (86) International application number: PCT/IL2009/000004 (87) International publication number: WO 2009/083986 (09.07.2009 Gazette 2009/28)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 03.01.2008 IL 18858508 (71) Applicant: C.Cogen 148 Menahem Begin Street 64921 Tel Aviv (IL)	(72) Inventor: RAM, Yossi 47224 Ramat Ha Sharon (IL) (74) Representative: Coyle, Philip Aidan  FRKelly 27 Clyde Road Ballsbridge Dublin 4 Dublin 4 (IE)