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1. (WO2001005727) LOW DENSITY WELL CEMENT COMPOSITIONS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/005727 International Application No.: PCT/US2000/040369
Publication Date: 25.01.2001 International Filing Date: 12.07.2000
Chapter 2 Demand Filed: 05.02.2001
IPC:
C04B 22/00 (2006.01) ,C04B 24/38 (2006.01) ,C04B 28/02 (2006.01) ,C09K 8/46 (2006.01)
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
22
Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
24
Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
24
Macromolecular compounds
38
Polysaccharides or derivatives thereof
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28
Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
02
containing hydraulic cements other than calcium sulfates
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
42
Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
46
containing inorganic binders, e.g. Portland cement
Applicants: STEPHENS, Michael[US/US]; US (UsOnly)
PEREIRA, Burton[US/US]; US (UsOnly)
PHILLIPS PETROLEUM COMPANY[US/US]; 4th and Keeler Bartlesville, OK 74004, US (AllExceptUS)
Inventors: STEPHENS, Michael; US
PEREIRA, Burton; US
Agent: RICHARDS, John; Ladas & Parry 26 West 61st Street New York, NY 10023 , US
Priority Data:
09/353,84115.07.1999US
Title (EN) LOW DENSITY WELL CEMENT COMPOSITIONS
(FR) COMPOSITIONS DE CIMENT DE FAIBLE DENSITE POUR PUITS
Abstract:
(EN) Improved low density well cement slurry compositions are formed by the addition of a free-fluid inhibitor additive to a mixture comprising a hydraulic cement and water. Suitable free-fluid inhibitors are hydroxy ethyl cellulose polymers having a cps value in the range of from about 5000 to about 50,000.
(FR) L'invention concerne des compositions améliorées de suspension épaisse de ciment pour puits, qu'on obtient par addition d'un additif inhibant les fluides libres sur un mélange contenant un ciment hydraulique et de l'eau. Des inhibiteurs de fluides libres appropriés sont par exemple des polymères d'hydroxyéthylcellulose présentant une valeur cps se situant entre environ 5000 et environ 50000.
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 (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (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)