During the primary cementing process, usually we pump some fluid with special technical performance between mud and cement slurries. It is called ahead fluid.

在油气井注水泥作业中，常常需要在水泥浆与泥浆之间注入一段具有特殊技术性能流体，这段流体就称为前置液。

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A small gap that can form between the casing or liner and the surrounding cement sheath, most commonly formed by variations in temperature or pressure during or after the cementing process.

在套管或衬管与周围的水泥环之间所形成的小间隙，这些间隙是由于在固井期间或固井之后温度或压力的变化所致。

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Then there is the cementing of the wellhead, a process which is necessarily tricky.

接着是油井井口的水泥灌浆，这是一项相当棘手的任务。

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Through 1997, Adams and his team amassed animal data on PS-341, in the process cementing relationships with more than a dozen academic researchers.

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