The quality of mud fluid is key to the drilling in complex strata.

复杂地层钻进，泥浆质量是关键。

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The semi-monthly changes of the mud fluid are controlled by the amount of fine sediments supply.

半月周期的变化受潮流半月周期变化引起的泥沙供给量的变化控制；

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Liquid media: water, acid, alkali, mud fluid, paper pulp, dyestuff, oil, milk, alcohol, drinking. etc.

液体介质：水、酸、碱、泥浆、纸浆、染料、油类、牛奶、酒类、饮料等。

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Drilling engineers use tons of a thick fluid called drilling mud to lubricate drill bits as they chew through rock.

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Halliburton said that the report "accurately places responsibility on BP as the well owner for its operational decisions, " which included using a heavy fluid designed to keep gas from entering the well, called drilling mud, that was "too light" and probably mixed with the cement at the bottom of the well, and drilling too narrow a well.

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