(19)

(11)

EP 3 180 496 A1

(12)

(43) Date of publication: 21.06.2017 Bulletin 2017/25 (21) Application number: 15832382.4 (22) Date of filing: 14.08.2015

(51) International Patent Classification (IPC):  E21B 47/024(2006.01) G01C 21/16(2006.01) E21B 47/022(2012.01) (86) International application number: PCT/NO2015/050134 (87) International publication number: WO 2016/024867 (18.02.2016 Gazette 2016/07)

(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 Designated Validation States: MA (30) Priority: 14.08.2014 NO 20140989 (71) Applicant: Aziwell AS 7224 Melhus (NO)	(72) Inventor: BORG, Eirik N-7015 Trondheim (NO) (74) Representative: Acapo AS  P.O. Box 1880 Nordnes 5817 Bergen 5817 Bergen (NO)