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(11)

EP 3 240 916 A1

(12)

(43) Date of publication: 08.11.2017 Bulletin 2017/45 (21) Application number: 15822955.9 (22) Date of filing: 28.12.2015

(51) International Patent Classification (IPC):  C22C 29/02(2006.01) E21B 34/00(2006.01) E21B 21/00(2006.01) C22C 29/08(2006.01) E21B 17/00(2006.01) (86) International application number: PCT/EP2015/081284 (87) International publication number: WO 2016/107843 (07.07.2016 Gazette 2016/27)

(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 MD (30) Priority: 30.12.2014 US 201462098229 P (71) Applicant: Sandvik Intellectual Property AB 811 81 Sandviken (SE)

(72) Inventors: DORVLO, Selassie Olton Solihull B92 8RF (GB) KEOWN, Eugene Bourton on Dunsmore CV23 9 RA (GB) SMITH, Jane Coventry West Midlands CV6 IEL (GB) NORDENSTRÖM, Henrik 136 66 Vendelsö (SE) MECH, Milena Royal Leamington Spa CV32 4TR (GB) CARPENTER, Michael Nuneaton Warwickshire CV10 0PF (GB) (74) Representative: Neilson, Martin Mark et al Urquhart-Dykes & Lord LLP Arena Point Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)