(19)

(11)

EP 2 984 278 A1

(12)

(43) Date of publication: 17.02.2016 Bulletin 2016/07 (21) Application number: 14782848.7 (22) Date of filing: 07.04.2014

(51) International Patent Classification (IPC):  E21B 33/12(2006.01) E21B 37/00(2006.01) (86) International application number: PCT/NO2014/050050 (87) International publication number: WO 2014/168485 (16.10.2014 Gazette 2014/42)

(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: 09.04.2013 NO 20130472 (71) Applicant: WTW Solutions AS 4017 Stavanger (NO)	(72) Inventor: TINNEN, Bård, Martin N-4017 Stavanger (NO) (74) Representative: Håmsø Patentbyrå ANS  Postboks 171 4302 Sandnes 4302 Sandnes (NO)