摘要
阐述了压电加速度地震检波器的工作原理和结构。从基本特性出发 ,详细分析了其对地震勘探的作用 ,分析得出压电加速度地震检波器最适合高精度地震勘探。自然频率远远高出地震勘探的频带范围 ,在地震勘探的频带范围内其幅频特性和相频特性都是一条直线 ;结构中没有弹性元件 ,也没有阻尼 ,灵敏度和敏感性都很高 ,可以实现单道单只勘探 ;从原理和结构上满足了高精度勘探的必要条件———不失真、没有相位差、动态范围大、频带宽。
The working principle and structure of piezoelectric acceleration geophone is discussed. The function of piezoelectric acceleration geophone for seismic exploration is analyzed in detail on the basis of its basic characteristics. It is a sort of geophone most suitable for high precision seismic exploration. Its natural frequency exceed range of frequency band of seismic exploration a great many. The phase and amplitude frequency characteristics is all a beeline in the frequency band range of seismic exploration. There are no spring element and damp in the structure and its sensitivity is very high. A path a geophone exploration can be actualized and the necessary conditions for high precision seismic exploration can be meet from its principles and structure: the high fidelity, large dynamic range, wide frequency band, unanimous phase, good high frequency characteristics, unnecessary combination etc..
出处
《石油仪器》
2004年第4期36-38,44,共4页
Petroleum Instruments
关键词
压电加速度地震检波器
频率响应特性
高精度地震勘探
piezoelectric acceleration geophone, frequency reponse, high precision seismic exploration
