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1. (WO2014187566) METHODS FOR MAINTAINING ZONAL ISOLATION IN A SUBTERRANEAN WELL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/187566    International Application No.:    PCT/EP2014/001381
Publication Date: 27.11.2014 International Filing Date: 22.05.2014
IPC:
C09K 8/467 (2006.01), C04B 24/24 (2006.01), C04B 28/02 (2006.01), C04B 26/02 (2006.01), C04B 28/00 (2006.01), C04B 28/04 (2006.01), C04B 28/06 (2006.01), C04B 28/08 (2006.01), C04B 28/18 (2006.01), C04B 28/32 (2006.01), C04B 28/34 (2006.01)
Applicants: SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42, rue Saint Dominique F-75001 Paris (FR) (FR only).
SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89 NL-2514 JG The Hague (NL) (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BN, BR, BW, BY, BZ, CA, CF, CH, CI, CL, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GD, GE, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IR, IS, IT, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, MC, MD, ME, MG, MK, ML, MN, MT, MW, MX, MY, NE, NI, NO, NZ, OM, PA, PE, PG, PL, PT, QA, RO, RS, RU, RW, SA, SC, SE, SG, SI, SK, SL, SM, ST, SV, SY, SZ, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, ZA, ZM, ZW only).
SCHLUMBERGER HOLDINGS LIMITED; P.O. Box 71 Craigmuir Chambers Road Town-Tortola British Virgin Islands (VG) (GB, JP, NL only).
SCHLUMBERGER CANADA LIMITED [CA/CA]; 525 - 3rd Avenue S.W. Calgary, Alberta Canada T2P 0G4 (CA) (CA only).
PRAD RESEARCH AND DEVELOPMENT LIMITED; P.O. Box 71 Craigmuir Chambers Road Town-Tortola British Virgin Islands (VG) (AO, BJ, CG, CM, CN, GA, GH, GM, IN, LY, MA, MR, MZ, NA, NG, PH, SD, SN, SY, TD, TG, VN only).
SCHLUMBERGER TECHNOLOGY CORPORATION [US/US]; 300 Schlumberger Drive, Sugar Land Texas 77478 (US) (US only)
Inventors: BULTE-LOYER, Helene; (FR).
REGNAULT DE LA MOTHE, Loic; (FR)
Agent: RZANIAK, Martin; Etudes et Productions Schlumberger 1, rue Henri Becquerel BP 202 F-92142 Clamart Cedex (FR)
Priority Data:
13305674.7 24.05.2013 EP
Title (EN) METHODS FOR MAINTAINING ZONAL ISOLATION IN A SUBTERRANEAN WELL
(FR) PROCÉDÉS DE MAINTIEN D'UN ISOLEMENT ZONAL DANS UN PUITS SOUTERRAIN
Abstract: front page image
(EN)A cement for use in wells in which hydrogen sulfide is present, comprises polymer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the polymer particles swell when contacted by hydrogen sulfide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.
(FR)Un ciment destiné à être utilisé dans des puits dans lesquels du sulfure d'hydrogène est présent, comprend des particules de polymère. En cas de rupture de la matrice de ciment ou de rupture de liaison entre l'interface tubage/ciment ou paroi de puits/ciment, les particules de polymère gonflent lorsqu'elles entrent en contact avec le sulfure d'hydrogène. Le gonflement obture les vides présents dans la matrice de ciment ou le long des interfaces de liaison, ce qui restaure de cette manière l'isolement de la zone.
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)