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给出了沿钻头轴向力方向和侧向力方向，考虑岩石破碎方式和破岂门限力对相应方向钻速的影响而建立的三维钻速方程，及井眼曲率等预测计算模式，对实际应用时，钻头机械力和钻头偏转角、测斜参数、地层倾角和倾向角、岩石破碎方式指致、地层各向异性参数、钻头各向异性参数和地层法向钻进效率等参数的确定方法进行了说明。在实际轨道预测中，计算用参数的准确性及计算程序的可靠性对预测结果准确程度显得尤为重要。理论成果和计算软件在辽河油田冷平１井、冷平３井和齐４０－平１、齐４０－平２水平井井眼轨道控制中进行了试验性应用，预测井段井眼曲率平均误差控制在０．５°／３０ｍ，达到水平井井眼轨道控制施工的要求。
The 3D drilling rate equation and the prediction model of wellbore curvature are established considering the influence of rock breaking mode and breakout force on the corresponding drilling speed in the direction of axial force and lateral force of drill bit. Application, the determination of parameters such as drill bit mechanical force and bit deflection angle, inclinometer parameters, formation dip angle and dip angle, rock fragmentation mode, anisotropy parameters of formation, anisotropy parameters of drill bit and formation normal drilling efficiency Explained. In the actual orbit prediction, the accuracy of the calculation parameters and the reliability of the calculation program are particularly important for the accuracy of the prediction results. The theoretical results and calculation software are applied tentatively in borehole orbit control of Lengping-1, Lengping-3 and Qi-40-Ping 1 and Qi-40-Ping 2 horizontal wells in Liaohe Oilfield, and the average error of wellbore curvature Control at 0.5 ° / 30m, to achieve horizontal well hole orbit control construction requirements.