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中文摘要：
介绍了一种用于检测油井套管变形和落物等状态的前视声波扫描成像实验系统。系统采用相控阵超声波扫描技术和一维线阵声波换能器。系统由井下系统和地面系统两部分组成,详细阐述了井下系统中电子电路的实现方法。系统将FPGA＋DSP＋AD的数字电路框架应用于套管井检测,完成了对超声回波的高速采样以及数字信号处理。用该系统进行了一系列模拟实验,结果表明：该系统在模拟井下环境的实验条件下,能够得到套管井的前视声波图像,从而检测出套管井变形、井内落物等状态。
英文摘要：
In order to detect the damage of casing boreholes,an acoustic imaging system using phased array scanning technology is developed.An FPGA＋DSP＋AD based frame is used in the digital circuit part to sample and process the echoes.A series of simulation experiments are conducted to demonstrate that the system can detect damages in casing boreholes.
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