(19)

(11)

EP 2 890 629 A2

(12)

(88) Date of publication A3: 19.03.2015 (43) Date of publication: 08.07.2015 Bulletin 2015/28 (21) Application number: 13777350.3 (22) Date of filing: 28.08.2013

(51) International Patent Classification (IPC):  B66D 3/00(2006.01) E21B 19/22(2006.01) (86) International application number: PCT/NO2013/050138 (87) International publication number: WO 2014/035253 (06.03.2014 Gazette 2014/10)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 28.08.2012 NO 20120967 28.08.2012 US 201261694066 P (71) Applicants: C6 Technologies AS 4066 Stavanger (NO) Stimline AS 4623 Kristiansand S (NO)	(72) Inventor: BJØRNENAK, Mads N-4628 Kristiansand (NO) (74) Representative: Fluge, Per Roald  c/o Fluges patent as Postboks 27 1629 Gamle Fredrikstad 1629 Gamle Fredrikstad (NO)