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1. (WO2007000398) METHOD FOR AVOIDING THE BUILD UP OF BA-/SR-SCALE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/000398 International Application No.: PCT/EP2006/063340
Publication Date: 04.01.2007 International Filing Date: 20.06.2006
IPC:
C02F 5/10 (2006.01) ,E21B 43/22 (2006.01) ,C09K 8/528 (2006.01)
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
5
Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
08
Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
10
using organic substances
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
16
Enhanced recovery methods for obtaining hydrocarbons
22
Use of chemicals or bacterial activity
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
52
Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
528
inorganic depositions, e.g. sulfates or carbonates
Applicants:
BASF AKTIENGESELLSCHAFT [DE/DE]; . 67056 Ludwigshafen, DE (AllExceptUS)
GUZMANN, Marcus [DE/DE]; DE (UsOnly)
RIEGER, Jens [DE/DE]; DE (UsOnly)
HERRERA TABODA, Lidcay [CU/DE]; DE (UsOnly)
BÜCHNER, Karl-Heinz [DE/DE]; DE (UsOnly)
Inventors:
GUZMANN, Marcus; DE
RIEGER, Jens; DE
HERRERA TABODA, Lidcay; DE
BÜCHNER, Karl-Heinz; DE
Agent:
HÖRSCHLER, Wolfram; Isenbruck Bösl Hörschler Wichmann Huhn Theodor-Heuss-Anlage 12 68165 Mannheim, DE
Priority Data:
10 2005 030 283.129.06.2005DE
Title (DE) VERFAHREN ZUR VERMEIDUNG VON BA-/SR-KESSELSTEIN
(EN) METHOD FOR AVOIDING THE BUILD UP OF BA-/SR-SCALE
(FR) PROCEDE POUR EMPECHER LA FORMATION DE TARTRE BA/SR
Abstract:
(DE) Die vorliegende Erfindung betrifft Verfahren zur Vermeidung von Ba-/Sr-Kesselstein den Schritt enthaltend Zuführen eines Polymers zu einer Flüssigkeit, die geeignet ist, Kesselstein abzuscheiden, in einer Flüssigkeitsumgebung, wobei das Polymer erhältlich ist aus der Copolymerisation von zumindest (a) monoethylenisch ungesättigten Dicarbonsäureanhydriden mit 4 bis 6 C-Atomen mit (b) Olefinen der Formel CH2=C(R1)R2, wobei R1H oder CH3 und R2H, CH3, C2H5 oder Phenyl ist und zumindest teilweise, vorzugsweise vollständige, Ringöffnung der Anhydridgruppen.
(EN) The invention relates to a method for avoiding the build up of Ba-/Sr-scale. Said method comprises the following steps; a polymer is introduced into a liquid which can be used to remove scale in a liquid environment. Said polymer can be obtained by copolymerising at least (a) monoethylenically unsaturated dicarboxylic acid anhydrides having 4 - 6 C-atoms and, (b) olefins of formula CH2=C(R1)R2, wherein R1 represents H or CH3 and R2 is H, CH3, C2H5 or phenyl and at least partially, preferably, completely, decyclisation of the anhydride groups.
(FR) L'invention concerne un procédé pour empêcher la formation de tartre Ba/Sr. Ce procédé comprend l'étape qui consiste à introduire un polymère dans un liquide destiné à déposer du tartre, dans un environnement liquide. Ledit polymère est productible par copolymérisation au moins des composants suivants : (a) des anhydrides d'acide dicarboxylique monoéthyléniquement insaturés comportant entre 4 et 6 atomes de C, et ; b) des oléfines de formule CH2=C(R1)R2 dans laquelle R1 représente H ou CH3, et R2 désigne H, CH3, C2H5 ou phényle, et par décyclisation au moins partielle, de préférence complète, des groupes anhydrides.
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, 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, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, 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: German (DE)
Filing Language: German (DE)