测井超声换能器传输特性的标准化处理

Standardizing Processing of Transfer Characteristics of Ultrasonic Transducers for Sonic Logging

余厚全雷芙蓉等：测井超声换能器传输特性的标准化处理，测井技术，１９９６（５）２０，３２５～３２９。针对声波测井中超声换能器特性的非一致性问题提出了换能器传输特性标准化的思想，给出了标准化的计算方法，并对实际回波进行了处理。实验结果表明：经过换能器传输特性的标准化处理，能够从声波信号中消除实际换能器自身的不规整特性，有效地减小或消除不同换能器的非一致性对所接收的声波信号的影响，使得不同换能器具有相同的传输特性，从而保证不同换能器接收的声波信号具有可比性。

In sonic logging, the non consistency of ultrasonic transducers is a common problem. In order to solve this problem, we propose an idea of standardizing the transducers transfer characteristics, and introduce some algorithms by means of which actual echoes have been processed. Experiment result shows that after standardization of transducers characteristics, influence created by transducers themselves can be removed from the sonic signals, and that effects of non consistency of different transducers on the received signals can also be reduced or eliminated effectively. Therefore, different transducers may have the same transfer characteristics so as to ensure sonic signals received by different transducers comparable.