Effects of electric-acoustic and acoustic-electric conversions of transducers on acoustic logging signal

作     者：FA Lin XIE WenYan TIAN Yong ZHAO MeiShan MA Li DONG DaQun 

作者机构：School of Electronics EngineeringXi'an University of Post and TelecommunicationsXi'an 710121China PetroChina Liaohe Oilfield CompanyPanjin 124013China The James Franck Institute and Department of ChemistryThe University of ChicagoChicagoIL 60637USA Department of Digital Media andArtXi'an University of Post and TelecommunicationsXi'an 710121China School of Marine EngineeringNorthwest Polytechnical UniversityXi'an 710071China 

出 版 物：《Chinese Science Bulletin》 (Chinese Science Bulletin)

年 卷 期：2012年第57卷第11期

页      面：1246-1260页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 082002[工学-油气田开发工程] 

基　　金：supported by the National Natural Science Foundation of China (40974078) 

主　　题：声波测井 测井信号 换能器 电声 声电转换 传输网络 信号幅度 传输延迟 

摘      要：Based on an acoustic logging transmission network and the engineering pattern of a sliding wave in acoustic logging, analysis and calculations have been performed in a study of the effects of the electric-acoustic and acoustic-electric conversions of the transducers on the acoustic logging signal. The results show that acoustic-electric conversion through the transducer can cause not only a serious disturbance in the signal amplitude, but also an apparent transmission delay. For engineering applications, the amplitude variation and transmission delay must be accounted for in a practical analysis of the acoustic logging signal in rocks. The results also show that with enhanced understanding and proper justification, the error caused by the acoustic-electric conversion can be significantly reduced in evaluation of the cement bond quality of a cased well, and the accuracy of rock porosity calculated using the measured acoustic velocity can be increased.