(19)

(11)

EP 2 179 125 A2

(12)

(88) Date of publication A3: 11.03.2010 (43) Date of publication: 28.04.2010 Bulletin 2010/17 (21) Application number: 08793895.7 (22) Date of filing: 06.08.2008

(51) International Patent Classification (IPC):  E21B 23/04(2006.01) E21B 23/00(2006.01) (86) International application number: PCT/NO2008/000283 (87) International publication number: WO 2009/020395 (12.02.2009 Gazette 2009/07)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 09.08.2007 NO 20074140 (71) Applicant: Pipetech International AS 4048 Hafrsfjord (NO)	(72) Inventor: WOLLUM, Vidar N-4100 Jørpeland (NO) (74) Representative: Håmsø Patentbyrå ANS  Postboks 171 4302 Sandnes 4302 Sandnes (NO)