地震资料解释中断层自动提取与组合技术研究

Research on automatic extraction and combination for faults in seismic data interpretation

随着油气勘探开发对象复杂程度的增加和三维地震勘探技术的日趋成熟 ,地震勘探技术正在向高精度的三维地震勘探方向发展 ,地震资料解释技术也正在向全三维地震资料解释过渡。然而 ,在全三维地震资料解释过程中断层自动提取与组合一直是个亟待解决的难题 ,文章针对该问题提出了利用数字图像处理技术进行断层自动组合的新方法。该方法在沿层相干数据切片上利用边缘检测和连接技术进行断层自动检测和提取 ,最后将层位数据和断层数据投影到解释底图上直接形成构造图。根据该方法已研制了相应的软件。该技术在松辽盆地英台三维工区的实际应用中取得了较好效果。

With the increasing complication of oil-gas exploration and exploiture objects and the maturation of 3-D seismic exploratio technology, the technology of seismic exploration is developing towards 3-D seismic exploration of high accuracy. And the technology of interpretation is also developing towards all 3-D seismic data interpretation. However, it is an urgent problem that faults are extracted and combined automatically in the interpretation of 3-D seismic data. So in this paper the technology of digital image processing is brought forward to combine faults automatically. Using the edge-detected technology, the faults can be detected automatically and picked in the slice of coherence cube. At last, the data of the horizons and the faults can be projected to the base map to form the structure maps directly. The software has been developed based on this method. And the satisfactory effects have been achieved by applying the software system into 3-D project of Yingtai in Northern Songliao Basin.