Bentonite swells considerably when exposed to water, making it ideal for protecting formations from invasion by drilling fluids.

膨土岩遇水会明显膨胀，此性质可理想地保护地层免受钻井泥浆侵害。

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It mainly has two parts as follows: theory research of foamed drilling fluids, and practice achievements in foam and foamed drilling technology.

论文主要包括两大部分：一是泡沫流体理论研究，二是泡沫和泡沫钻进技术的实践成果。

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The major factor influencing the rheological properties of oil-based drilling fluids is temperature instead of pressure in the deep sections of oil Wells.

在深部井段，影响油包水乳化泥浆流变性的主要因素是温度而不是压力。

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The BP company pumped heavy drilling fluids,known as mud, into the top of its damaged well in the Gulf of Mexico.

VOA: special.2010.08.07

One such stock is Newpark Resources ( NR), a Texas-based provider of drilling fluids, temporary worksites and access roads for oil and gas drillers.

FORBES: Gulf Oil Spill Boosts Onshore Driller

Faulty blowout preventers, errors in the management of drilling fluids, a sub-par cementing job, questionable well design, haste it was a confluence of these factors that led to the blowout.

FORBES: Offshore Oil Czar Bromwich Falls Flat With Op-Ed Defending Permit Delays

What is required is to make sure that the drilling fluids and frack wastewater do not come in contact with the fresh water aquifers when the wells are being drilled, completed, or produced.

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