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Machine translation
1. (WO2001023703) A METHOD OF IMPROVING THE PERMEABILITY OF AN UNDERGROUND PETROLEUM-CONTAINING FORMATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/023703    International Application No.:    PCT/US2000/025483
Publication Date: 05.04.2001 International Filing Date: 15.09.2000
Chapter 2 Demand Filed:    05.04.2001    
IPC:
C09K 8/524 (2006.01), C09K 8/86 (2006.01)
Applicants: AKZO NOBEL N.V. [NL/NL]; Velperweg 76, NL-6824 BM Arnhem (NL) (For All Designated States Except US).
SLIKTA, Alberto [BR/US]; (US) (For US Only).
GADBERRY, James, F. [US/US]; (US) (For US Only).
JOHNSON, Andress, K. [GB/US]; (US) (For US Only)
Inventors: SLIKTA, Alberto; (US).
GADBERRY, James, F.; (US).
JOHNSON, Andress, K.; (US)
Agent: MANCINI, Ralph, J.; Akzo Nobel Inc., Intellectual Property Dept., 7 Livingstone Avenue, Dobbs Ferry, NY 10522-3408 (US)
Priority Data:
60/155,593 24.09.1999 US
Title (EN) A METHOD OF IMPROVING THE PERMEABILITY OF AN UNDERGROUND PETROLEUM-CONTAINING FORMATION
(FR) PROCEDE D'AMELIORATION DE LA PERMEABILITE D'UNE FORMATION SOUTERRAINE RENFERMANT DU PETROLE
Abstract: front page image
(EN)The present invention generally relates to a method and a composition useful in restoring the permeability of a porous underground petroleum-containing formation. Restoring permeability to the formation enhances the injectivity thereby accelerating petroleum recovery. The method of the invention comprises treating said formation with a composition which comprises a combination of at least one nonionic compound, preferably an alkoxylated alcohol, with at least one cationic compound, preferably a quaternary ammonium compound, in an amount effective to improve the permeability of the formation. The composition may also optionally contain an alkyl glycoside.
(FR)La présente invention concerne un procédé et une composition permettant de rétablir la perméabilité d'une formation souterraine poreuse renfermant du pétrole. Le rétablissement de cette perméabilité se traduit par une amélioration de la capacité d'injection, ce qui améliore le rendement. Le procédé selon l'invention consiste à traiter cette formation à l'aide d'une composition comprenant une combinaison d'au moins un composé non ionique, de préférence, un alcool alcoxylaté, avec au moins un composé cationique, de préférence, un composé d'ammonium quaternaire, selon une quantité efficace pour améliorer la perméabilité de la formation. Cette composition peut éventuellement contenir un alkyl glycoside.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)