(19)

(11)

EP 1 442 196 A2

(12)

(88) Date of publication A3: 30.10.2003 (43) Date of publication: 04.08.2004 Bulletin 2004/32 (21) Application number: 02770321.4 (22) Date of filing: 29.10.2002

(51) International Patent Classification (IPC)7: E21B 7/02 (86) International application number: PCT/NL2002/000685 (87) International publication number: WO 2003/038231 (08.05.2003 Gazette 2003/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 29.10.2001 NL 1019248 14.06.2002 NL 1020870 (71) Applicant: Costa Dorada Investment N.V. Curacao (AN)	(72) Inventor: VOS, Iljan, David NL-7425 EA Deventer (NL) (74) Representative: Hoorweg, Petrus Nicolaas et al Arnold & Siedsma,Advocaten en Octrooigemachtigden,Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)