The film hole flow coefficient is increased with momentum ratio, especially when momentum ratio is small.
气膜孔流量系数随动量比的增大而增加，在小动量比下，影响尤为明显；
The separated layer polymer injection pipe string consists of well-flushing packer, down-hole flow distributor and bottom ball.
分层注聚管柱主要由可洗井封隔器、配注器及底球组成。
The geometry shapes and arrangements of the nozzle are the key factors to determine that the bottom?hole flow field is reasonable or not.
而喷嘴几何形状、喷嘴布置方式是决定井底漫流场是否合理的关键因素。
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。
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。
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