More than one-quarter of the world's oil and almost one-fifth of the world's natural gas come from offshore, even though offshore drilling is six to seven times more expensive than drilling on land.

全球超过四分之一的石油和近五分之一的天然气来自近海，尽管近海钻探的成本是陆地钻探的六到七倍。

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For years the natural gas drilling industry has decried the lack of data that could prove-or disprove-that drilling can cause drinking water contamination.

多年来，天然气钻探行业公开反对“钻探导致水质恶化”的谴责，认为没有什么数据能够证明或否认这个结论。

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Unlike drilling to reach oil and natural gas fields, drilling for geothermal power doesn't produce immediate dividends.

不同于钻井取石油和天然气，利用地热并不能产生即刻的红利。

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The Deepwater Horizon, an oil and gas drilling rig, exploded on April twentieth.

VOA: special.2010.06.04

Switzer says that the industrial nature of gas drilling, with heavy truck traffic and noise, and occasional wastewater and chemical spills,has transformed their peaceful country life.

VOA: standard.2010.01.02

State investigators found Cabot's drilling had caused gas to migrate into her well.

VOA: standard.2010.01.02

The company offers deepwater and harsh environment drilling, oil and gas drilling management, and drilling engineering and project management services, as well as explores, develops, and produces oil and gas resources.

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The natural gas glut has caused natural gas drilling to be curtailed, making drilling equipment and workers available to shift to going after the oil.

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The oil and gas commission oversees oil and gas drilling in Wyoming.

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