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(11)

EP 3 570 958 A1

(12)

(43) Date of publication: 27.11.2019 Bulletin 2019/48 (21) Application number: 18741127.7 (22) Date of filing: 17.01.2018

(51) International Patent Classification (IPC):  B01D 45/04(2006.01) B01D 43/00(2006.01) E21B 43/34(2006.01) (86) International application number: PCT/US2018/014106 (87) International publication number: WO 2018/136557 (26.07.2018 Gazette 2018/30)

(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 TN (30) Priority: 18.01.2017 US 201762447749 P (71) Applicants: Denton, Chris Mason, Texas 76856 (US) Resio, Federico Carlos 1989 Buenos Aires (AR) Calandra Resources, Inc, Vancouver, British Columbia V6H 4A7 (CA)

(72) Inventors: DENTON, Chris Vancouver British Columbia V6H 4A7 (US) RESIO, Federico Carlos Vancouver British Columbia V6H 4A7 (AR) (74) Representative: HGF Limited  1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)