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地震勘探是以研究人工激发的弹性波在地壳中传播为基础的探测地壳地质结构和寻找油藏的重要方法。磁感式地震检波器是地震勘探中通常采用的接收传感器。它是根据力学运动微分方程和电磁感应原理制成的。其作用是将传播到地表的地震子波信号引起的质点振动转换成电信号。虽然它作为传感器在许多领域中得到了广泛的应用,但是目前人们在地震勘探数据的处理和分析上很少考虑到检波器的声-电转换作用对测量的地震勘探信号的影响。我们计算和分析了检波器的声-电传输特性对接收的地震勘探信号的时域波形和幅度谱的影响,建立了地震勘探信号传输网络模型,为优化设计检波器和更为精确地用测量到的地震勘探信号反演所测地层的地质结构和物理特性提供了更完善的理论基础。
Seismic exploration is an important method to detect the geological structure of the crust and search for reservoirs based on the study of the artificial wave propagation in the earth’s crust. Magnetic geophones are commonly used sensors in seismic exploration. It is based on the mechanics of differential equations and electromagnetic induction principle made. Its function is to convert the particle vibration caused by the seismic wavelet signal propagating to the surface into an electrical signal. Although it has been widely used as a sensor in many fields, little attention has been given to the influence of acoustic-electrical conversion of the detector on the measured seismic signal currently in the processing and analysis of seismic data. We calculate and analyze the influence of the acoustic-electrical transmission of the detector on the time-domain waveform and the amplitude spectrum of the received seismic exploration signal, and establish the seismic exploration signal transmission network model. In order to optimize the design of the detector and measure more accurately The retrieved seismic signals provide a more complete theoretical basis for inversion of the geological structure and physical properties of the measured formation.