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进行检波器(地震道或采集道)的野外测试对比,是地震勘探设备在生产使用期间经常要做的基本工作,也是地震勘探设备初次投产使用必须要做的工作。本文以哥伦比亚实施的一个二维地震采集项目为例,对该项目中布设在同一测线的相同桩号处的SM-24检波器串和单只GS-One检波器所获取的两组数据,从原始记录的振幅及相位谱、初叠、时移剖面、衰减等方面进行了对比,详细对比剖析了它们在采集效果上的差异。所有的对比显示两者差别很小或没差异。GS-One的数据比SM-24检波器串的数据的振幅低1.14dB;在施工方面搬运GS-One比SM-24少用一半人工。
The field test comparison of seismometers (seismic traces or acquisition channels) is the basic work that seismic exploration equipment often needs to do during production and use, and also the work that must be done when the seismic exploration equipment is put into production for the first time. Taking a two-dimensional seismic acquisition project in Colombia as an example, two sets of data obtained from the SM-24 detector string and a single GS-One detector at the same station of the same survey line in the project are used. From the original records of the amplitude and phase spectrum, the first stack, time-lapse profiles, attenuation and other aspects of the comparison, a detailed analysis of the differences in their acquisition effect. All comparisons show little or no difference between the two. The GS-One’s data is 1.14dB lower than the amplitude of the SM-24 detector string data and less than half the labor required to move the GS-One to the SM-24 in terms of construction.