注汽开采中高温高压蒸汽的频繁注入又加剧了地层出砂，这些状况极大地限制了稠油的有效开采。

In steam injection production, the steam with HTHP can stimulate formation sand production. These statuses restrict the output of heavy oil.

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试验结果表明，与不掺掺合料的基准胶砂相比，矿物掺合料的使用可以提高胶砂的流动度，但同时极大地降低了胶砂的早期强度；

As is shown by the results, compared with the blank cement mortar, the fluidity of cement mortar can be improved by using mineral admixture, but the early strength reduced dramatically;

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