(19)

(11)

EP 2 038 514 A1

(12)

(43) Date of publication: 25.03.2009 Bulletin 2009/13 (21) Application number: 07768933.9 (22) Date of filing: 18.06.2007

(51) International Patent Classification (IPC):  E21B 49/08(2006.01) E21B 33/124(2006.01) (86) International application number: PCT/NO2007/000213 (87) International publication number: WO 2007/148979 (27.12.2007 Gazette 2007/52)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 19.06.2006 NO 20062844 (71) Applicants: Løken, Helge 5178 Loddefjord (NO) Inwell Technology AS 5178 Loddefjord Norway (NO)	(72) Inventor: LOKEN, Helge 5178 Loddefjord (NO) (74) Representative: Langan, Hans  Onsagers Ltd C/o Innovation Norway 5 Lower Regent Street London SW1Y 4LR London SW1Y 4LR (GB)