This pressure must be under control, and we control it by means of the mud which we circulate down the drill pipe.

这种压力必须加以控制，我们让泥桨顺着钻杆向下循环，用这种方法来控制压力。

youdao

The control pod will open the valves that allow the drilling mud to be forced into the well.

控制板打开真空管，将钻井泥浆泵入油井。

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This pressure must be under control, and we control it by means of the mud which wecirculate down the drill pipe.

这种压力必须加以控制，我们让泥桨顺着钻杆向下循环，用这种方法来控制压力。 。

youdao

The friction caused by the gas bubble pushing up the pipe and displacing the drilling mud used to control the pressure could have created a static charge that ignited the gas into a fireball.

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Transocean engineers wanted to keep the pressure in the borehole under control with heavy mud while Halliburton set the cement plugs.

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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.

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