Often, hydraulic jacks are required to remove the fitted bolts and sometimes they need to be drilled out.
对它们进行拆卸时经常要用到液压千斤顶，有时甚至还必须采用钻孔拆卸的办法。
Allows for the upper portion of the barrier to be drilled out, permitting pressure equalization across the tool before drilling out the upper slips.
—允许将工具的上部钻除，可以在钻除上卡瓦之前实现工具上下的压力平衡。
Five wells drilled in the 1970s turned out to be dry, as was a sixth in 2000.
上世纪70年代他们钻探了五口深井，结果都是干涸井，2000年钻探的第六口井亦是如此。
She said she hoped the latest plan would work but admitted it would be a temporary measure and that a relief well currently being drilled might turn out to be the permanent solution.
她表示希望最新方案能有所帮助，但也承认这只不过是权宜之计，并且认为正在开展的减压井钻探工作或许会是一个永久的解决方案。
The inside (including the taper) is usually made of cement or thermoplastic, since this material must be drilled out if the well is to be deepened beyond the casing point.
浮鞋的内部（包括锥型段部分）通常由水泥或热塑性材料组成，如果在套管鞋处井眼还需要继续加深的话这种材料必须被钻掉。
The inside (including the taper) is usually made of cement or thermoplastic, since this material must be drilled out if the well is to be deepened beyond the casing point.
浮鞋的内部（包括锥型段部分）通常由水泥或热塑性材料组成，如果在套管鞋处井眼还需要继续加深的话这种材料必须被钻掉。
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