摘要:
为了更好地利用浅剖资料进行浅剖解释工作,利用参量阵浅剖仪CW模式发射的短时连续波采集的浅地层剖面资料,经过资料特征分析,进行了预处理(包括数据拼接、延迟校正、球面扩散补偿、道间振幅均衡和大值干扰压制处理)。在预处理的基础上,首先提取资料的瞬时振幅(波形包络)并对其进行带通滤波,资料的低频成分突出,同相轴连续,分辨率适中,该处理结果适合用于构造解释。而后,对波形包络资料进行提频处理,在保留低频成分的同时突出高频成分,分辨率高,但在构造较陡部位同相轴连续性较差,该处理结果适合用于薄层砂体刻画。
关键词:
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参量阵
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浅剖
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瞬时振幅
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线性提频
Abstract:
The parametic array sub-bottom profile data based on continue wave is processed by pre-processing and interpretation processing for different interpretation purposes. The pre-processing includes data connection, delay correction, spherical spreading compensation, channel energy balance and large-scale power suppression. The interpretation processing includes bandpass filtering of instantaneous amplitude data and linear frequency extraction. The low frequency component of the instantaneous amplitude data after bandpass filtering is prominent, so it is suitable for structural interpretation. Furthermore, the linear frequency extraction data containing low frequency and high frequency components is beneficial to the sand body description.
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