The influence mechanism of nano clay on the high temperature performance of cementing slurry
The decline in mechanical properties of cementing cement at high temperatures is one of the main factors causing the integrity failure of the cementing cement sheath.In or-der to suppress the degradation of cementing slurry performance under high temperature and improve the mechanical properties of cement paste,this article uses nano clay as a modified material to explore the influence and mechanism of nano clay on the performance of cement-ing slurry under high temperature.The research results indicate that the addition of nano clay improves the rheological and mechanical properties of the cement slurry,delays the thickening time of the cement slurry,improves the mechanical properties of the cement paste,and makes the microstructure of the cement paste more dense.The research conclu-sions of this article contribute to the construction of a new type of cement slurry for deep and ultra-deep wells,ensuring the safe extraction of oil and gas resources in deep and ultra-deep wells.
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