(19)

(11)

EP 2 315 881 A1

(12)

(43) Date of publication: 04.05.2011 Bulletin 2011/18 (21) Application number: 09768612.5 (22) Date of filing: 22.06.2009

(51) International Patent Classification (IPC):  E02B 17/00(2006.01) E21B 15/00(2006.01) (86) International application number: PCT/AU2009/000792 (87) International publication number: WO 2009/155639 (30.12.2009 Gazette 2009/53)

(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 MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 23.06.2008 AU 2008903188 (71) Applicant: Pluton Resources Ltd Melbourne, Victoria 3004 (AU)	(72) Inventor: REED, Alistair Ross Bellerive Tasmania 7018 (AU) (74) Representative: Moore, Barry et al Hanna Moore & Curley 13 Lower Lad Lane Dublin 2 Dublin 2 (IE)