讨论现代井眼轨迹测量中较受关注的问题 :误差椭球和井眼交碰概率分析。系统介绍如何根据井眼位置的不确定性矩阵确定误差椭球或误差椭圆 ;讨论井眼位于一定大小的误差椭球或误差椭圆内的概率 ;重点讨论现代钻井项目中经常遇到并需要解决井眼交碰概率问题 ,在分析Brook等人方法的基础上 ,给出一个比较完善的井眼交碰概率分析方法 ,该方法突出了交碰概率受名义间距、半径之和以及相对误差椭球大小的影响。 Discuss the more concerned problems in modern wellbore trajectory measurement: Probability analysis of error ellipsoid and wellbore collision. The system describes how to determine the error ellipsoid or error ellipse based on the uncertainty matrix of the wellbore position; discusses the probabilities that the wellbore is within an error ellipsoid or error ellipse of a certain size; focuses on the frequently encountered and well- Based on the analysis of Brook et al.’s method, a comparatively perfect probability analysis method for wellbore interaction is presented. The method highlights the fact that the probability of intersection is affected by the nominal distance, the sum of radii and the relative error ellipsoid size Impact.