Rotating casing is helpful to improve effectively mud displacement efficiency and thus improve cementing quality.

旋转套管可以有效提高水泥浆顶替效率，从而提高固井质量。

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In this paper, on the basis of rheological theory, we have discussed the effect of the slurry properties on the mud displacement efficiency in eccentric annulus.

本文利用流变学原理，讨论了流体的流变性能对偏心环空注水泥顶替效率的影响。

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This ramp, coated with mud and water, eased the displacement of the blocks which were pushed (or pulled) into place.

这个斜坡覆盖着一层泥和水，然后缓缓地移动推(或拉)到上面的石块。

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During the pumping and displacement of the heavyweight spacer used to displace the mud, a breach in pressure integrity resulted in the undetected loss of drilling mud into the probably uncemented well-bore.

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