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1. (WO2007095367) CROSS-LINKING COMPOSITION AND METHOD OF USE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/095367    International Application No.:    PCT/US2007/004140
Publication Date: 23.08.2007 International Filing Date: 13.02.2007
IPC:
C09K 8/512 (2006.01), C09K 8/588 (2006.01), C09K 8/60 (2006.01), C09K 8/68 (2006.01)
Applicants: E. I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street, Wilmington, Delaware 19898 (US) (For All Designated States Except US).
PUTZIG, Donald, Edward [US/US]; (US) (For US Only)
Inventors: PUTZIG, Donald, Edward; (US)
Agent: SANCHEZ, Kathryn, M.; E. I. du Pont de Nemours and Company, Legal Patent Records Center, 4417 Lancaster Pike, Wilmington, Delaware 19805 (US)
Priority Data:
11/354,061 14.02.2006 US
Title (EN) CROSS-LINKING COMPOSITION AND METHOD OF USE
(FR) COMPOSITION DE RETICULATION ET PROCEDE D'UTILISATION
Abstract: front page image
(EN)A cross-linking composition comprises (a) an aqueous liquid, (b) a pH buffer, (c) a cross-linkable organic polymer, (d) a cross-linking agent which comprises an organic titanate, an organic zirconate, or combinations thereof, and (e) a delay agent which is a hydroxyalkylaminocarboxylic acid. The composition provides flexibility in rate of cross-linking and can be used over a wide range of pH. The composition is used in oil field applications for hydraulic fracturing and plugging of permeable zones and leaks in subterranean formations.
(FR)La présente invention concerne une composition de réticulation comprenant (a) un liquide aqueux, (b) un tampon de pH, (c) un polymère organique réticulable, (d) un agent de réticulation comprenant un titanate organique, un zirconate organique ou des combinaisons de ceux-ci, et (e) un agent de retardement qui est un acide hydroxyalkylaminocarboxylique. La composition confère de la flexibilité à la vitesse de réticulation et peut être utilisée sur une large plage de pH. La composition est utilisée dans des applications relatives au pétrole pour la fracturation hydraulique et le colmatage de zones perméables et de fuites dans des formations souterraines.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)