E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/13 (2006.01) C04B 24/26 (2006.01) C04B 24/32 (2006.01) C04B 28/04 (2006.01) C09K 8/467 (2006.01) E21B 33/14 (2006.01)
Patent
CA 2416562
The invention concerns a cementing composition for cold zones cementing operations in an oil well or analogous, said composition comprising a aqueous fluid base, solid particles including cement particles, and a dispersing agent in solution in the aqueous fluid base, said dispersing agent having a comb- like structure composed of a graft copolymer, said graft copolymer being constituted by a backbone carrying grafted chains.
Composition de cimentation destinée aux opérations de cimentation d'un puits de pétrole ou analogue dans des zones froides, qui contient une base fluide aqueuse, des particules solides, y compris des particules de ciment, et un agent dispersant se trouvant en solution dans la base fluide aqueuse. Ledit agent dispersant possède une structure de type peigne composée d'un copolymère greffé, ce copolymère étant constitué d'un squelette portant des chaînes greffées.
Volpert Edgar
Smart & Biggar
Sofitech N.v.
LandOfFree
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