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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Some drilling rig cannot drill Wells over the jacket and the jacket cap for drilling is a good solution for such problem.

利用钻井用导管架帽(简称钻井帽)进行钻井作业是解决某些钻井船不能悬跨导管架钻井问题的好方案。

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It further proves that the traditional Darcy formulae cannot be used to calculate the liquid influx during gas drilling of low-permeability formations.

进一步说明不能用传统的达西公式计算气体钻井中低渗透地层液体侵入量。

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Shutting down offshore drilling cannot be restarted instantaneously.

FORBES: Drilling Moratorium Will Further Burden Economy

"Ultimately, what this spill shows is that offshore oil drilling simply cannot be done safely, " Sen.

WSJ: Oil Industry Recommends Offshore Safety Measures After Gulf Spill

State Mineral Resources Director Lynn Helms is a hearing examiner and cannot comment on the drilling permit application.

WSJ: Oil company eyes ND site near Roosevelt ranch