CAJ | 학술논문

指向式旋转导向系统在水平井和定向钻进中广泛应用，它代表了世界钻井技术的最高水平。首先假设偏心环组个数n＝2时可以有效增大钻头的偏移范围，然后通过建立旋转心轴的力学模型，分别推导出n＝1和n＝2时旋转心轴的转角方程和挠曲线方程进行比较，最后得出当n＝2时靠近钻头处的转角θ2要大于n＝1时钻头处的转角θ1的结论，即安置2个偏心环组可以达到增大钻头偏移范围，减小井眼轨迹曲率半径，优化系统导向性能的目的。最后，对偏心环组B在L3＝0的情况下的力学模型进行了优化。
지향식선전도향계통재수평정화정향찬진중엄범응용，타대표료세계찬정기술적최고수평。수선가설편심배조개수n＝2시가이유효증대찬두적편이범위，연후통과건립선전심축적역학모형，분별추도출n＝1화n＝2시선전심축적전각방정화뇨곡선방정진행비교，최후득출당n＝2시고근찬두처적전각θ2요대우n＝1시찬두처적전각θ1적결론，즉안치2개편심배조가이체도증대찬두편이범위，감소정안궤적곡솔반경，우화계통도향성능적목적。최후，대편심배조B재L3＝0적정황하적역학모형진행료우화。
Directive rotary steerable drilling system reprensents the most advanced technology in the world and it has been widely used in the horizontal well and controlled directional well.Firstly it is assumed that 2 decentralized rings could en-large the deviation angle of bit effectively;then by the establishment of mechanics model of rotation axis, the rotation angle equations and deflection curve equations while n=1 and n=2 were derived respectively for comparison to prove the as-sumption, that is with 2 decentralized rings, enlargement of bit deviation angle, smaller well trajectory curvature radius and optimized steering performance can be realized;and finally mechanics model of decentralized ring B is optimized under the condition of L3 =0.