论文部分内容阅读
断距为１～２０ｍ的小断层对油田开发影响很大，但用常规方法解释地震资料无法识别这些小断层。引入分形理论中的关联维方法，对合成地震剖面的关联维曲线进行分析。分析结果表明，关联维方法对正演模型中的微小断层（落差小于５ｍ）有一定识别能力，只要噪音背景小于５０％（常规处理地震资料噪音比例远小于５０％），都可以用该方法处理解释，识别微小断层。应用该方法重新处理和解释松辽盆地榆树林油田１２１井区地震资料，查明了葡萄花油层一些新的微小断点（垂直落差５ｍ左右），部分已被井下地质资料所证实，应用效果良好。图３参４（邹冬平摘）
Small faults with a fault spacing of 1 ~ 20m have a great influence on the development of oilfields, but these small faults can not be identified by conventional methods to explain seismic data. The correlation dimension method in fractal theory is introduced to analyze the correlation dimension curve of synthetic seismic profile. The analysis results show that the correlation dimension method has a certain recognition ability for small faults (less than 5m) in the forward model. This method can be used as long as the noise background is less than 50% (the conventional noise ratio of seismic data is less than 50%) Explain, identify tiny faults. This method is used to re-process and interpret the seismic data of well 121 in the Yushulin Oilfield of Songliao Basin. Some new small breakpoints (about 5m in vertical drop height) of Putaohua reservoir have been identified. Some of them have been confirmed by underground geological data and have good application effect . Figure 3 Senate 4 (Zou Dongping pick)