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1. (WO1991006511) POLYVINYL SULFONATE SCALE INHIBITOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006511 International Application No.: PCT/US1990/004824
Publication Date: 16.05.1991 International Filing Date: 24.08.1990
Chapter 2 Demand Filed: 03.04.1991
IPC:
C02F 5/10 (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
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:
MARATHON OIL COMPANY [US/US]; 539 South Main Street Findlay, OH 45840, US
Inventors:
FALK, David, O.; US
BEAZLEY, Phillip, M.; US
DORMISH, Frank, L.; US
THOMPSON, Ronald, G.; US
Agent:
HUMMEL, Jack, L. ; Marathon Oil Company Post Office Box 269 Littleton, CO 80160-0269, US
Priority Data:
431,26201.11.1989US
Title (EN) POLYVINYL SULFONATE SCALE INHIBITOR
(FR) INHIBITEUR DE TARTRE AU SULFONATE DE POLYVINYLE
Abstract:
(EN) A relatively high molecular weight polyvinyl sulfonate and a process for inhibiting scale deposition, particularly inorganic sulfate such as barium sulfate, wherein an aqueous fluid present in or produced from a subterranean formation is contacted with an aqueous solution having a relatively high molecular weight polyvinyl sulfonate dissolved therein. The aqueous fluid has a pH equal to or less than 6.0 and the polyvinyl sulfonate has a molecular weight of from about 9,000 to about 30,000.
(FR) Sulfonate de polyvinyle à masse molaire relativement forte et procédé pour inhiber le dépôt de tartre, avec un sulfonate particulièrement inorganique comme du sulfonate de barium. Dans ce procédé, un liquide aqueux présent dans une formation souterraine ou produit à partir de celle-ci est mis en contact avec une solution aqueuse contenant un sulfonate de polyvinyle à masse molaire relativement forte dissous dans celle-ci. Le liquide aqueux a un pH égal ou inférieur à 6,0 et le sulfonate de polyvinyle a une masse molaire allant d'environ 9.000 à environ 30.000.
Designated States: AT, AU, BB, BG, BR, CA, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, RO, SD, SE, SU
European Patent Office (BE, CH, FR, IT)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19921642AU1990064018