利用地震资料判断断层封闭性的方法探讨

在深入研究断幸亏生及其主要影响因素的基础上，根据对断裂带中岩性影响的分析，定量描述了断裂带填充物中泥质所占百分含量的大泪民春断闰移和被错断泥岩厚度之间的函数关系，并提出了根据断裂带填充物中泥质含量的大小来判断层封闭性的标准。因勘探程度较低地区断层位移和被错断泥岩厚芳难以确定，所以，提出利用地震资料求取断层位移和被错断泥碉厚度，再利用断层填充物中泥质含量的大小判断断层封闭性的方法，针其于松辽盆地黑色

Methodology of judging fault sealing property from seismic data

On the basis of deep research on fault sealing property and its main influence factors, the functional relation of mud content in fault infills with fault displacement and faulted mudstone thickness is described quantitatively through the analysis of lithology influence factors in fracture belt. And the standard of judging fault sealing property using mud content in fracture infills is also presented. As the fault displacement and faulted mudstone thickness are difficult to determine in low exploration degree areas, therefore we use seismic data to derive these values and then judging fault sealing preperty according to mud content in fault infills. This method has been applied to the study of sealing property of several major faults in the Heiyupao sag of Songliao Basin. The result shows that the method can be used to study the fault sealing property, and this kind of study can be extended to the whole area.