(19)

(11)

EP 2 047 063 A1

(12)

(43) Date of publication: 15.04.2009 Bulletin 2009/16 (21) Application number: 07793925.4 (22) Date of filing: 19.07.2007

(51) International Patent Classification (IPC):  E21B 43/017(2006.01) E21B 43/01(2006.01) (86) International application number: PCT/NO2007/000273 (87) International publication number: WO 2008/010726 (24.01.2008 Gazette 2008/04)

(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: 19.07.2006 NO 20063352 (71) Applicant: Framo Engineering AS 5862 Sandsli, Bergen (NO)	(72) Inventors: INGEBRIGTSEN, Atle 5232 Paradis (NO) STEINE, Ole Gams 5231 Paradis (NO) (74) Representative: Onsagers Ltd  c/o Innovation Norway 5 Lower Regent Street London SW1Y 4LR London SW1Y 4LR (GB)