Two types of defense inclination BHA which has the third or the fourth stabilizers are designed and applied in drilling engineer,field tests shown that the effect of defens...

• 经现场试验表明：用该理论方法所设计组配的三稳定器和四稳定器防斜钻具组合起到了良好的防斜效果，机械钻速得到明显提高，为小井眼钻具设计提供了一种实用的计算方法。