利用本文结果，并结合钻柱力学分析，便可对井眼轨迹进行预测和控制，又可反求地层因素等。
Combined with a BHA analysis program, the results of the present study can be used to predict and control the drilling trajectory and to generate the formation factors as well.
利用该模式并结合钻柱力学三维分析，可以预测定向井井眼轨迹，还可以利用定向井井史资料，反求有关系数。
Combined with the BHA analysis, the models are used to realize the prediction of drilling trajectory and to back-calculate the related coefficients from the well history information.
以大位移井钻柱的部分或整体为研究对象，提出了钻井各种动态问题，建立了钻柱的各种动态行为的力学模型。
The drill string of ERW is taken as research object, the dynamic problem is brought forward during making hole, and the mechanics model about each dynamic action is established.
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