建议在井下条件允许的情况下，增加环空与套管内的压差值来提高固井质量。

So it is recommended that the pressure differential between the casing and the annulus be increased to improve the cementing quality if the downhole conditions permit.

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提供了一种既能保证套管居中，又能产生水泥浆环空螺旋流的套管弹性旋流扶正器。

A kind of device which can keep the casing at the center of borehole and can also generate helical flow of cement slurry, which is the Spring Whirlflow casing Centralizer, is presented in this paper.

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在位于挪威油田的许多油井中，9-5/8”与13-3/8”套管柱之间的环空突然出现了地面压力升高的情况。

The annulus between the 9-5/8" and the 13-3/8" casing strings within a Norwegian field development had historically exhibited pressure buildup at surface on many wells.

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