On May 26th BP, the company responsible for the well that Deepwater Horizon had drilled, started to pump heavy drilling mud into the well's blowout preventer, a set of valves on the sea floor.

应当为“深水地平线”钻井台石油泄漏事件负责的BP（英国石油公司）在5月26日开始用泵将重型钻井泥浆打入海底的阀门组（防喷器）中。

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Engineers had spent days pumping heavy drilling fluid into the leaking well head on the ocean floor in a high-pressure bid to smother the gushing crude and ultimately seal the well with cement.

工程师们数日来一直向海底的泄漏油井泵入大量的钻探泥浆，希望用高压堵住喷涌的原油，最后用水泥封死油井。

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There are very strict codes on removing, drilling or notching load bearing walls and floor joist.

有非常严格的代码去除，或缺口钻进墙壁和地板承载桁架。

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From a platform of sea-ice, a team of researchers from Germany, Italy, New Zealand and the United States has been drilling down into the sea floor beneath the McMurdo Sound.

ECONOMIST: The South Pole as location and metaphor

That was beyond the reach of conventional drilling platforms, which stand on steel legs anchored to the ocean floor.

FORBES: Going deep

Chevron miscalculated its drilling of its Frade field last November, an oil well just under the ocean floor in the Santos Basin in Brazil, about 70 kilometers off coastal Rio de Janeiro.

FORBES: For Brazil Oil Spill, Chevron Gets A Discount