In deep drilling process, casing wear is the problem that cannot be ignored.
在深井、超深井钻井过程中，套管磨损有可能导致套管封隔失效和油气井的早期报废。
They asked a drilling team to dig a deep well.
他们让一个钻井队挖一口深井。
When drilling deep holes, the feed movement should be released from time to time.
在钻深孔的时候，有时必须放松进给运动。
The decay is very deep, so I will use a local anesthetic before drilling.
龋洞很深，在钻牙前我将给您打一针麻药。
Drilling more takes time as the water table here is deep.
由于地下水位很深，开凿更多水井需要一定的时间。
A type of offshore drilling and production platform used in very deep water.
一种在非常深的水域中使用的海上钻采平台。
This new model of drilling machine can bore through solid rock ten metres deep.
这台新型钻机能钻透十米厚的坚固岩石。
Men are now also drilling the cold, deep North Sea.
现在人们在寒冷的深海上也在进行钻探。
Men are now also drilling the cold, deep North Sea.
现在人们在寒冷的深海上也在进行钻探。
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