(19)

(11)

EP 1 625 258 A1

(12)

(43) Date of publication: 15.02.2006 Bulletin 2006/07 (21) Application number: 04732669.9 (22) Date of filing: 13.05.2004

(51) International Patent Classification (IPC):  E02D 5/36(1968.09) E21B 10/44(1980.01) E02D 7/22(1968.09) (86) International application number: PCT/IB2004/001541 (87) International publication number: WO 2004/101897 (25.11.2004 Gazette 2004/48)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 15.05.2003 ZA 200303782 (71) Applicants: Wilson, Clive 4001 Durban (ZA) Pass, Jonathan, Charles 3630 Westville (ZA)	(72) Inventor: WILSON, Clive, 14 Palm Springs 400 1 Durban (ZA) (74) Representative: Groenendaal, Antonius W. M.  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)