The result here can be used quantitatively to analyze the affection of the formation on the well trajectory, and has significant importance for the further study of the bit-rock interaction relation.

结果可用来定量地分析地层因素对井眼轨迹的影响，对于深入研究钻头-地层相互作用关系具有重要意义。

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Completing control method of well path due to the rock characters and the interaction between bit and formation.

根据地层岩石特性及钻头与地层的相互作用关系，完成井眼轨迹控制方法。

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It still is a difficult subject for most drilling engineers to predict and control well path by applying the mechanical analysis of bottom hole assembly and the rock-bit interaction model.

利用下部钻具力学分析和钻头与地层相互作用模型来预测和控制井眼轨道对于大多数钻井作业来说仍是一个难题。

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