During the drilling leakage treatment, the bridging material cannot pass through the drilling pump and drill bit due to its larger size.

为了解决钻井漏失在处理过程中遇到的架桥材料较大而无法通过钻井泵滤网和钻头的问题，设计了一种旁通式堵漏材料送入工具。

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Through the drilling of thicker conglomerate in large borehole, the new requirement for the manufacture of drilling tools has been put forward.

通过该井大井眼巨厚砾石层的钻进，对钻井工具的制造也提出了新的要求。

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The expedition's other research tasks include drilling through the ice by hand, on average four times a day.

BBC: Arctic team: 'London, we have a problem'

The loss of the hi-tech equipment has focused attention on the data gathered by the tried-and-tested method of drilling through the ice by hand.

BBC: Arctic team gives up on ice radar

Through November, the company began drilling and production at different projects in South Texas.

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