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全部科目 > 石油石化技能考试 > 海上油气生产监督考试

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翻译：An acidizing treatment for a sandstone formation normally will consist of sequentially injecting three fluids---a preflush, the hydrofluoric acid hydrochloric acid mixture, and an after flush. These fluids serve definite purposes.

【参考答案】

砂岩地层的酸化通常包括依次注入三种流体：预处理液，HF-HCL混合液，后置液，这些液体起到不通的作用。

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