Application of cylindrical linear phased array in casing borehole  

作　　者：SHI Fangfang WU Xianmei KE Yijing ZHANG Bixing 

机构地区：[1]State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences Beijing 100190 [2]School of Geophysics and Oil Resource, Yangtze University Jingzhou 434023)

出　　处：《Chinese Journal of Acoustics》2010年第1期65-72,共8页声学学报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(863 Program,2008AA042402);by the National Nature Foundation of China(10774158,10704081);by the National Research Foundation of Korea;by the National Natural Science Foundation of China(NSFC)

摘　　要：An Ultrasonic Phased Array （UPA） transducer is presented for borehole imaging and casing inspection in acoustical logging. First, a Cylindrical Linear Phased Array （CLPA）, which is made up of numbers of piezoelectric elements distributed on the surface of a cylinder uniformly, is designed and fabricated. By transmitting and receiving acoustic waves using different groups of elements under the control of the electric system, the CLPA can gcan all area of the borehole wall dynamically and rapidly. Then the radiation and reflection acoustic fields of the CLPA are investigated theoretically in the casing borehole with defects. Finally, the experimental researches about ultrasonic scanning and imaging for the casing boreholes with defects have been conducted by the CLPA transducer. The experimental results consist well with the theoretical ones.An Ultrasonic Phased Array （UPA） transducer is presented for borehole imaging and casing inspection in acoustical logging. First, a Cylindrical Linear Phased Array （CLPA）, which is made up of numbers of piezoelectric elements distributed on the surface of a cylinder uniformly, is designed and fabricated. By transmitting and receiving acoustic waves using different groups of elements under the control of the electric system, the CLPA can gcan all area of the borehole wall dynamically and rapidly. Then the radiation and reflection acoustic fields of the CLPA are investigated theoretically in the casing borehole with defects. Finally, the experimental researches about ultrasonic scanning and imaging for the casing boreholes with defects have been conducted by the CLPA transducer. The experimental results consist well with the theoretical ones.

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术] P631.814[自动化与计算机技术—计算机科学与技术]