井身轨道设计的优化计算方法  

Optimum calculation for well trajectory design

作　　者：佟长海[1] 

机构地区：[1]中油辽河石油勘探局,辽宁盘锦124010

出　　处：《特种油气藏》2005年第1期60-62,共3页Special Oil & Gas Reservoirs

摘　　要：在井眼轨道设计中 ,假设井眼轨道上的每一段都是空间平面圆弧或直线段 ,相互之间在连接处相切。根据这一假设 ,建立了描述井眼参数之间相互关系的非线性方程组 ,并采用数值优化理论进行井身轨道参数的数值计算。应用这种方法 ,可以设计出任意轨迹类型的井身轨道 ,在优化计算时增加适当约束条件 ,可以解决诸如三维多靶轨道设计、侧钻水平井轨道设计、随钻修正设计以及复杂分支井轨道设计等诸多相关问题 。It is assumed in well trajectory design that each section of the course is plane arc or straight line, and is tangential connected to others. A non-linear equation group is established according to this assumption to describe the relationship between wellbore parameters. The numerical values of well trajectory parameters are calculated by using numerical optimization theory. Any types of trajectories can be designed by this method. 3D multi-target courses, sidetrack horizontal well path, correction while drilling, and complicated lateral well course, etc. can be designed with some proper additional constraining conditions, thus providing a new way for well trajectory design.

关 键 词：井身轨道设计 井眼轨道方程 数值求解 几何法 非线性方程组 数值优化算法 

分 类 号：TE22[石油与天然气工程—油气井工程]