A specially profiled probe, known as a stinger, is attached to the bottom of the tubing string to engage in the retainer during operation.

  • 一个定型的探管,即注水泥插入管,被固定在油管柱的底部,以便在作业期间与水泥限位器接合。

  • 互联网摘选 2025-01-19 22:44:34

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