... helical Bourdon tube ==> 螺旋弹簧管 helical casing ==> 螺旋套 helical cast ==> 螺旋排绕,反盘 ...
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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.
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。
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