中文摘要：

粘住的练习绳在扩大活动范围钻设计导致主要无生产力的费用。第一步是决定粘住在发生了的深度。测量的方法为决定粘住的点被证明有用，但是这些操作花可观的时间。由于有当前的运作的惯例的限制，计算方法仍然被比较喜欢估计粘住的点深度。当前的分析方法不考虑磨擦并且为垂直而非扩大的活动范围井仅仅是有效的。数字方法被建立拿完整的报道击倒洞磨擦，工具关节，练习管子的不安的端，联合练习字符串和管状的材料以便在扩大活动范围井决定粘住的点是有效的。拉测试，扭转测试和旋转和拉的罐头的联合测试被用来决定粘住的点。结果证明在洞磨擦下面，工具关节，练习管子的不安的端，管状的尺寸和材料在拉长度或粘住的练习绳的扭曲角度上有重要效果。

英文摘要：

A stuck drill string results in a major non-productive cost in extended reach drilling engineering. The first step is to determine the depth at which the sticking has occurred. Methods of measurement have been proved useful for determining the stuck points, but these operations take considerable time. As a result of the limitation with the current operational practices, calculation methods are still preferred to estimate the stuck point depth. Current analytical methods do not consider friction and are only valid for vertical rather than extended reach wells. The numerical method is established to take full account of down hole friction, tool joint, upset end of drill pipe, combination drill strings and tubular materials so that it is valid to determine the stuck point in extended reach wells. The pull test, torsion test and combined test of rotation and pulling can be used to determine the stuck point. The results show that down hole friction, tool joint, upset end of drill pipe, tubular sizes and materials have significant effects on the pull length and/or the twist angle of the stuck drill string.