SG11201903146UA - A mixture for obtaining a drilling fluid for drilling plants for wells and excavations for civil and industrial engineering works and drilling fluids so obtained - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 19 July 2018 (19.07.2018) WIP0 1 PCT omit VIII °nolo o111111oin ioo Imo oimIE (10) International Publication Number WO 2018/130957 Al (51) International Patent Classification: CO9K 8/14 (2006.01) (21) International Application Number: PCT/IB2018/050167 (22) International Filing Date: 11 January 2018 (11.01.2018) (25) Filing Language: Italian (26) Publication Language: English (30) Priority Data: 102017000003218 13 January 2017 (13.01.2017) IT (71) Applicant: LAVIOSA CHIMICA MINERARIA SPA [IT/IT]; VIA LEONARDO DA VINCI 21, 57123 LIVORNO (IT). (72) Inventors: UMBERTO, Laviosa; c/o LAVIOSA CHIMI- CA MINERARIA SPA, VIA LEONARDO DA VINCI 21, 57123 LIVORNO (IT). CLAUDIO, Traversi; c/o LAVIOSA CHIMICA MINERARIA SPA, VIA LEONAR- DO DA VINCI 21, 57123 LIVORNO (IT). (74) Agent: CELESTINO, Marco et al.; ABM Agenzia Brevet- ti & Marchi, Viale Giovanni Pisano 31, 56123 Pisa (IT). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: A MIXTURE FOR OBTAINING A DRILLING FLUID FOR DRILLING PLANTS FOR WELLS AND EXCAVATIONS FOR CIVIL AND INDUSTRIAL ENGINEERING WORKS AND DRILLING FLUIDS SO OBTAINED Fig. 8 100 N O (57) : Composition of a mixture for obtaining of a water-based drilling fluid comprising a predetermined amount of acid C montmorillonite smectite clay, and a predetermined amount of partially hydrolyzed polyacrylamide. [Continued on next page] WO 2018/130957 Al MIDEDIMOMMIONER130111100110HMEHMEHOIMIE Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))