随钻电磁波传播电阻率测井的快速反演新方法  

A New Inversion Method of LWD Electromagnetic Propagation Resistivity

作　　者：史晓锋[1] 李铮[1] 蔡志权[1] 

机构地区：[1]北京航空航天大学电子工程系

出　　处：《测井技术》2001年第4期266-269,共4页Well Logging Technology

摘　　要：电磁波电阻率测井是随钻测量的重要方法。提出了一种旨在提高电磁波电阻率测井纵向分辨率的快速反演方法。该方法首先根据实际测井曲线提出划分地层界面的边界条件 ,要求正演模拟曲线在地层子区间的信息熵极值点处与实测曲线吻合。数值模拟和实际应用的结果证明该方法可以快速、有效地提高电磁波传播测井的纵向分辨率 。A New Inversion Method of LWD Electromagnetic Propagation Resistivity Logging. WLT, 2001, 25(4): 266-269 Electromagnetic propagation resistivity logging is the important method for LWD. Given in this paper is a new method which aims to improve the vertical resolution of wave propagation resistivity logging curves. Firstly, the boundary conditions are proposed to exactly identify the formation interface according to the actual logging curves. The forward modeling curves should agree with the actual curves at the points where information entropy gets extremum. Both the numerical simulation and actual applications show that the method presented in this paper can improve the vertical resolution of the wave propagation resistivity logging quickly and efficiently, enhancing the responses of the logging tools to thin beds.

关 键 词：电磁波传播测井 电阻率 反演 数值模拟 随钻测井 

分 类 号：P631.811[天文地球—地质矿产勘探] TE271[天文地球—地质学]