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随着石油勘探开发的不断发展,无论生产井还是探井都在向深井方向发展。因此,保证深井高温条件下水泥石的性能尤其是强度,满足封固井质量是固井过程必须要解决的问题。硅酸盐油井水泥主要矿物C_3S和C_2S,两者约占矿物总量的80%,在一般温度下矿物水化产物主要是C_2SH_2凝胶和Ca(OH)_2晶体,在较低温度(110℃以内)环境下,这些水化产物具有较好的力学性能。随着温度的升高,当超过130℃时,水泥石都有不同程
With the continuous development of oil exploration and development, both production wells and exploration wells are developing towards deep wells. Therefore, to ensure the performance of deep-well cement under high temperature, especially the strength of cement to meet the quality of cementing well cementing process must be addressed. The main mineral of portland cement C_3S and C_2S, both of which account for about 80% of the total amount of mineral, are mainly C_2SH_2 gel and Ca (OH) _2 crystal at normal temperature. At lower temperature (110 ℃ ) Within the environment, these hydration products have better mechanical properties. As the temperature increases, when more than 130 ℃, cement has a different range