In 1971 geologists discovered a large underground cave filled with natural gas while drilling in the Turkmenistan village of Derweze.

1971年，地质学家在土库曼斯坦达尔·瓦扎村庄进行钻井工作时，发现了一个巨大的充满天然气的地下坑洞。

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TULLOW oil, an Anglo-Irish exploration firm, announced on August 4th that it had struck oil while drilling in Uganda near the shores of Lake Albert.

英国—爱尔兰石油勘探公司Tullow Oil于8月4日宣布，该公司日前在乌干达境内的艾尔伯特湖畔钻探的过程中钻到了石油。

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Measurement while drilling is one of key technologies for monitoring and controlling well trajectory.

随钻测量是井眼轨迹监测与控制中的一项关键技术。

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Now the White House says there will be no additional drilling while the spill in the Gulf of Mexico is investigated.

VOA: special.2010.05.01

Mr. Chakra suggested that the company devise a simple foot-pedal spray device the worker could use while drilling.

WSJ: IBM Creates Volunteer Teams

Lapindo Brantas disavows any responsibility, despite claims that it had failed to use appropriate safety equipment while drilling.

ECONOMIST: Face value

The ship must stay perfectly still while drilling and does so using six thrusters with 15-foot-diameter propellers that can rotate 360 degrees.

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