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。
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。
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。
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。
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。
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。
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