【摘要】 提出了靶段定向井的概念 ,给出了靶段定向井两维或三维轨道设计的判据。着重对三维靶段定向井剖面设计方法进行了研究 ,给出了选择靶段定向井轨道类型的方法 ,而且给出了计算实例 ,对于现场设计施工具有一定的指导意义更多还原

【Abstract】 The concept of directional well with target section is put forward and the criteria for choosing 2D or 3D well trajectory are given. The emphases are placed on design methods of 3D directional well with target section, the method for selecting well trajectory in designing such kind of well is presented and the case histories are given, which is worthy of being used to direct field operation.更多还原