【摘要】 采用常规三维地震勘探资料 ,一般难以得到隐藏在三维地震数据体中的断层和特殊地质体的清晰无偏差图像 ,利用相干数据体检测方法可以有效地解决这一问题。相干数据分析是通对地震道间波形相似性的计算 ,实现将三维振幅数据体向三维相似系数数据体的转换。介绍相干数据体计算法以及断层和特殊地质体在相干数据体上的准确成像方法 ,展示了相干属性体的良好应用前景。在埕岛油田馆陶组上段油藏的勘探开发过程中 ,利用该技术准确预测了断层及河道砂体的分布范围 ,指导了井位部署 ,取得了较好的经济效益。图 4参 8更多还原

【Abstract】 Three dimensional seismic data imply the response of formation and lithology information underground. so it is very effective for solving geologic problem. Three dimensional seismic exploration is wide used in oil field. However,the traditional way is difficult to obtain clear and exact view of fault and special geobody. Coherency data can solve this problem effectively. By calculating the similarity of waveform convert the original amplitude seismic data to coherency data. Descript the algorithm of coherency data and the response of fault and special geobady in detail, it shows a good prospect of application of the coherence. In the process of exploration and production of Chengdao Oilfield,by applying coherent analysis technology,the distribution of fluvial sandbody precisely were forecasted. This guided the determination of well site. Very good economic and social benefit have been obtained.更多还原