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1. (WO2019048990) CURING A LOST CIRCULATION ZONE IN A WELLBORE
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Pub. No.: WO/2019/048990 International Application No.: PCT/IB2018/056589
Publication Date: 14.03.2019 International Filing Date: 29.08.2018
IPC:
C09K 8/40 (2006.01) ,C09K 8/42 (2006.01) ,C09K 8/50 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
40
Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
42
Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
50
Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
Applicants:
SAUDI ARABIAN OIL COMPANY [SA/SA]; 1 Eastern Avenue Dhahran, 31311, SA
Inventors:
KOZODEEV, Sergei; SA
GOLIKOV, Pavel; SA
Priority Data:
15/700,70411.09.2017US
Title (EN) CURING A LOST CIRCULATION ZONE IN A WELLBORE
(FR) DURCISSEMENT D’UNE ZONE DE CIRCULATION PERDUE DANS UN PUITS DE FORAGE
Abstract:
(EN) An example method includes pumping fluid into a wellbore to fill, at least partly, a region in a lost circulation zone, with the fluid having a first density; and after pumping the fluid, pumping cement slurry into the wellbore. The cement slurry has a second density. The first density is greater than, or equal to, the second density, which causes the fluid to prevent, at least partly, the cement slurry from mixing with other fluid in the lost circulation zone for at least a period of time.
(FR) La présente invention concerne un procédé indicatif comprenant le pompage d'un liquide dans un trou de forage à remplir, au moins partiellement, une région dans une zone de circulation perdue, le liquide ayant une première densité ; et après le pompage du liquide, le pompage d’une suspension de ciment dans le puits de forage. La suspension de ciment présente une seconde densité. La première densité est supérieure, ou égale, à la seconde densité, qui amène le liquide à empêcher, au moins partiellement, la suspension de ciment de se mélanger avec un autre liquide dans la zone de circulation perdue durant au moins une période de temps.
Designated States: 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)