放射性和磁性方法在工程测井中的应用

Application of Radioactivity and Magnetism in Engineering Logging

在油田钻井和修井过程中有时会出现现有仪器或工艺无法满足工程测井需求的情况。放射性和磁性方法被证明是解决这些工程难题的有效方法。介绍了6个放射性和磁性方法的创新应用实例,分别解决了对油管卡点位置、钻具鱼顶深度和位置、套管内填充状况、管外油水界面位置、钢丝鱼顶深度以及套管外扶正器状况的测量问题,取得了满意的测井效果。

A variety of engineering logging requirements arise during oilfield drilling and workovers,and sometimes these requirements cannot be met by existing instruments or techniques.It is proved that radioactivity and magnetism have become effective methods to solve these engineering problems.In this paper,six examples of innovative applications of radioactivity and magnetism are presented,which have solved the problems of measuring the position of tubing stuck point,the depth and position of fish top of drilling tool,the filling condition of casing,the position of oil-water interface outside the pipe,the depth of fish top of steel wire and the condition of centralizer outside the casing with satisfactory logging results.