The bottom hole flow physical model of a kind of PDC coring bits is established considering the effect of junk slot and teeth layout in this paper.
以一种现场常用的PDC取心钻头为原型，充分考虑排屑槽和切削齿对于井底流动的影响，建立了与实际相接近的PDC取心钻头井底流场的物理模型。
It is used to treat well bottom accident and used to be on -the -way test in drilling and coring operation.
它适用于井下事故处理，也适用于钻井和取芯的中途测试。
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