(19)

(11)

EP 2 954 082 A2

(12)

(88) Date of publication A3: 09.04.2015 (43) Date of publication: 16.12.2015 Bulletin 2015/51 (21) Application number: 14703394.8 (22) Date of filing: 10.02.2014

(51) International Patent Classification (IPC):  C22C 26/00(2006.01) C22C 29/08(2006.01) C22C 29/06(2006.01) E21B 10/42(2006.01) (86) International application number: PCT/EP2014/052549 (87) International publication number: WO 2014/122306 (14.08.2014 Gazette 2014/33)

(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: 11.02.2013 GB 201302345 11.02.2013 US 201361763343 P (71) Applicant: Element Six GmbH 36151 Burghaun (DE)	(72) Inventors: KONYASHIN, Igor Yurievich 36151 Burghaun (DE) RIES, Bernd Heinrich 36151 Burghaun (DE) LACHMANN, Frank Friedrich 36151 Burghaun (DE) (74) Representative: Reeve, Anna Elizabeth et al Element Six Limited Group Intellectual Property Fermi Avenue Harwell Campus Didcot Oxfordshire OX11 0QR Didcot Oxfordshire OX11 0QR (GB)