产品应用6.doc 关键词：open inventor; visual C++2005; 井眼轨迹; 三维可视化 [gap=1017]Keywords: open inventor; visual C++2005; well track; 3D visualization
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实钻井眼轨迹坐标计算的样条插值法的讨论 关键词 井眼轨迹 样条函数 数值积分法 [gap=813]Keywords] well trajectory；spline function；numerical integration
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The current method of well survey calculation is assuming the segment is a specific curve,however,the actual well trajectory is unknown. Therefore,error exists between calculated and actual well trajectory.
目前的测斜计算方法将整个测段假设为某一种确定性质的曲线线段,而实际测段内井眼轨迹形状是未知的,因此计算得到的井眼轨迹与真实井眼轨迹间必然存在误差。
参考来源 - 测段选择对轨迹拟合精度的影响及其处理方法It is considered that the keys of successful drilling are the deviation prevention of vertical section, better wellbore trajectory and better sand-carrying and sidewall prevention of fluid drilling.
认为直井段的防斜打直、良好的井眼轨迹以及钻井液优良的携砂护壁性是钻水平井成败的关键。
参考来源 - 川西首口水平深井钻井难点与技术措施The well track control theory and anticollision technology solves the control of azimuth under small deviation angle and the collision issues between new wellbore and adjacent well or original well under densely well pattern.3.
2、井眼轨迹控制理论及防碰技术，解决了小井斜角下方位的控制，以及在密井网条件下，新井眼与临井、新井眼与老井的相碰问题。
参考来源 - 套损井侧斜修井技术研究Completing control method of well path due to the rock characters and the interaction between bit and formation.5.
4、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。
参考来源 - 套损井侧斜修井技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
重点介绍了其井眼轨迹控制技术。
对于大多数直井，倾角其实也只是对井眼轨迹的测量。
For most vertical wellbores, inclination is the only measurement of the path of the wellbore.
地层可钻性各向异性的评价对井眼轨迹控制具有重要意义。
The evaluation of drillability anisotropy of the formation is very important for well trajectory control.
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