| 相干体技术在煤田三维地震勘探中的应用 |
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| 引用本文： | 杜文凤.相干体技术在煤田三维地震勘探中的应用[J].煤田地质与勘探,1998,26(6):56-59. |
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| 作者姓名： | 杜文凤 |
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| 作者单位： | 煤田地球物理勘探研究院 |
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| 摘 要： | 相干体技术是一种用于描述断层和地层特征的解释性处理技术。其基本原理是，在偏移后的三维地震数据体中，通过对每一个道每一个样点求得与其周围数据的相干性值，来获得一个表示地震数据相干的三维数据体。地层出现的不连续性在相干体上表现为低相干体值。相干体上的低相干值通过相干时间切片和相干层拉平切片来反映。应用实例表明，使用相干技术在解释落差３ｍ左右的小断层，分析断层的平面分布，加快大断层的解释速度，探测巷道，
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| 关 键 词： | 地震勘探 三维数据处理 相干体技术 |
APPLICATION OF COHERENCE CUBE TECHNIQUE IN THE 3 D SEISMIC SURVEY OF COAL FIELD |
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| Du Wenfeng.APPLICATION OF COHERENCE CUBE TECHNIQUE IN THE 3 D SEISMIC SURVEY OF COAL FIELD[J].Coal Geology & Exploration,1998,26(6):56-59. |
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| Authors: | Du Wenfeng |
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| Institution: | Coal Geophysical Exploration Research Institute |
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| Abstract: | The coherence cube technique is an interpretation processing technique,which is used to describe the fault and stratigraphic characteristics.Its basic principle is that in the 3 D seismic data volume after offset the coherence values of every sample point in every channel with its surrounding dats are found,thus,the 3 D data volume which indicates the coherence of seismic data (coherence cube for short)is obtained.The stratigraphic discontinuity appears as a low coherence value in the coherence cube.The low coherence value in the coherence cube is reflected by the coherent time slice and coherent bed flattening slice.The application examples indicate that the coherence cube technique is more visual and faster than the conventional interpretation method in the aspects such as interpreting the small faults with the throw about 3m,analyzing the plane distribution of fault,quickening the interpretation speed of larger fault,detecting the roadway and delimiting the boundary of worked out area and so on. |
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| Keywords: | seismic exploration 3 D data processing coherence cube technique application |
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