| 摘要 |
The invention relates to a cementing composition and to the use of said composition in cementing wells for oil, gas, water, geothermal purposes, and the like. The composition comprises a liquid phase containing a binder which, after polymerization, is suitable for maintaining cohesion between solid particles, and a solid phase that is constituted by particulate additives that are insoluble in said liquid phase. There are at least two such additives, and relative to one another they present grain size distributions that are disjoint, with the choice of proportions for the solid materials relative to the liquid and relative to one another being such that the resulting mixture is put into conditions of hindered settling and has a PVF close to the maximum possible PVF. The composition may comprise monomers and cross-linking agents. The polymerisation may be initiated by irradiation.
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