The tool then draws the expanded anchoring member towards to the head to securely connect the seal plug to the pipeline and liner.

该工具然后绘制朝头部成员扩大锚安全的连接密封堵塞的管道和衬垫。

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Positive mechanical thrust drives plug into body seats to ensure tight bi-directional line seal.

积极的机械推力驱动阀塞进入阀体阀座馁，确保紧密双向管路密封。

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The tapered plug is precision ground from hardened high alloy material or an overlaid stainless to assure a tight seal and easy operation.

锥形阀塞经过精密研磨，采用硬化高合金材料或一种镀层不锈钢，确保紧密密封和操作容易。

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It aims only to drill down to 1, 400 feet beneath the seafloor, then plug and seal the hole for reentry next year.

FORBES: After Mishaps, Shell Dials Back Arctic Oil-Drilling Plans

Given the two red flags that had been thrown up previously, one would have expected that as a precaution a cement plug would have been placed somewhere in the wellbore as a secondary pressure seal before this primary pressure control system (heavy mud) was evacuated from the wellbore.

WSJ: The Oil Disaster Is About Human, Not System, Failure