| 摘要 |
<p>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 νm. 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.</p> |
