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文章介绍了一种新型小尺寸钻头 ,它主要由一个偏置的多锥形牙轮和一个圆柱形滚轮及两个牙掌组成。其工作原理不同于球形单牙轮钻头 ,但是与三牙轮钻头的工作原理相同 ,主要依靠钻头牙轮牙齿的冲击和压入来破碎岩石 ,并且由圆柱形滚轮来修整井壁 ,还有两个靠近井底的喷嘴。与相同钻头尺寸的三牙轮钻头相比 ,该新型钻头的牙轮尺寸和轴承尺寸要大得多 ,因此 ,它可以承受较大的钻压 ,从而可以提高轴承和牙轮的使用寿命 ,进而提高机械钻速和钻头的使用寿命。文中介绍了在试验台上的试验情况和数据 ,并与三牙轮钻头进行了比较 ,得出了应用该钻头的重要结论。
The article introduces a new type of small-sized drill that consists mainly of a biased conical cone with a cylindrical roller and two claws. Its working principle is different from the spherical single-cone bit, but the working principle of the same with the three-roller bit, mainly rely on the impact and press-in of the bit cone teeth to crush the rock, and the cylindrical roller to trim the wall, there are two Near the bottom of the nozzle. Compared to a tricone bit of the same bit size, the new bit has a much larger cone and bearing size so it can withstand a greater weight-on-bit, thereby increasing bearing and cone lifetimes and thus Improve ROP and bit life. In this paper, the test conditions and data on the test bench are introduced and compared with the tricone bit, and the important conclusions of the application of the bit are obtained.