Cementing compositions and application of such compositions...

Details Cementing compositions and application of such compositions... Cementing compositions and application of such compositions...

C - Chemistry, Metallurgy

04

B

C04B 28/02 (2006.01) C04B 16/04 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2353726

The present invention provides cementing compositions for oil wells or the like comprising a hydraulic binder and reinforcing particles constituted by a flexible material of low compressibility, and with an average grain size of less than 500 µm. The compositions of the invention are of particular advantage when cementing zones which are subjected to extreme dynamic stresses, such as perforation zones and the junctions of a multi-branch lateral well. They are also highly suitable for producing plugs.

L'invention porte sur des compositions servant à la cimentation de puits de pétrole et autres comprenant un liant hydraulique et des particules de renforcement d'un matériau souple faiblement compressible et d'une taille moyenne de grain inférieure à 500 µm. Lesdites compositions, qui présentent un avantage particulier pour la cimentation de zones soumises à des contraintes dynamiques extrêmes telles que les zones de perforation ou les jonctions de puits latéraux à plusieurs branches, conviennent également parfaitement pour la réalisation de bouchons.

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