(19)

(11)

EP 2 356 310 A1

(12)

(43) Date of publication: 17.08.2011 Bulletin 2011/33 (21) Application number: 09825052.5 (22) Date of filing: 18.06.2009

(51) International Patent Classification (IPC):  E21B 33/10(2006.01) F24J 3/08(2006.01) (86) International application number: PCT/SE2009/050774 (87) International publication number: WO 2010/053424 (14.05.2010 Gazette 2010/19)

(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 (30) Priority: 10.11.2008 SE 0802373 (71) Applicant: Pemtec AB 515 61 Svaneholm (SE)	(72) Inventor: ALEXANDERSSON, Hans S-513 35 Fristad (SE) (74) Representative: Östergren, Markus  AWAPATENT AB P.O. Box 11394 404 28 Göteborg 404 28 Göteborg (SE)