摘要
传统的单极声波测井仪只能测量地层的纵波波速,且有其自身的缺点。对于硬地层来说,可以通过对长源距声波全波测井资料的分析、处理,获得纵、横波波速,但在软地层中无法获得横波速度。通过偶极声波测量技术可以测量地层的横波,进而计算岩层弹性及非弹性参数、地应力参数、孔隙度、渗透率等,使声波测井曲线提供的有用信息量骤增。文章从电路入手,分析了在青海油田偶极声波仪在应用中出现的问题,总结了解决方法。
Traditional acoustic logging tool only measures the velocity of compressional wave of the formation,and has its own shortcomings.For hard formation,compressional wave(P-wave)and shear wave(S-wave)velocities can be obtained by the analysis and processing of long-distance full-wave acoustic logging data,however,in soft formation,S-wave velocity can not be obtained.Shear wave velocity can be measured by wavesonic logging technology,and as a result,the elastic and inelastic parameters of the rock,formation stress,porosity,permeability etc.can be calculated,which can greatly increase the useful information content obtained from sonic logs.This article focuses on the analysis of the issues arising from the use of the wavesonic tool bought from US in 2004 in Qinghai oilfield and attempts to provide some guidelines for its maintenance.
出处
《石油仪器》
2010年第4期39-40,43,共3页
Petroleum Instruments
