Referring to the condition that occurs when the kelly is all the way down, so drilling progress cannot continue.

方入是指发生了这样的情况，即方钻杆全部进入到补心内，导致钻井进程不能够继续下去。

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Remarkable progress had been made in the technique of drilling Wells long before the earliest oil-wells.

远在最早的油井之前，钻井技术就已经取得了显著的进步。

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To use different core drilling method in different geological environments can ensure the smooth progress of geological exploration work.

在不同的地质环境中，使用不同的岩心钻进方式，可以保证地质勘探工作的顺利进行。

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Prosecutors assert the employees may have provided false information to regulators about the risks associated with the well while drilling was in progress, the Journal noted.

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Progress in horizontal drilling, which allows more oil to be produced from fewer wells, is another boon for the Arctic.

ECONOMIST: Resources: Hidden treasure | The

"The drilling is going very well so far and we're making great progress with the early steps, " said Curiosity project scientist Prof John Grotzinger.

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