共反射面元方法在下扬子地区的试验

Application of common reflecting element method in Jiangsu area

1. 同济大学,上海200029;2. 江苏油田勘探公司,江苏扬州225009

1. Tongji University, Shanghai 200029, China;2. Jiangsu Oilfield Company, Yangzhou 225009, China

下扬子海相中古生界的地层复杂,断层发育,构造破碎,地震资料信噪比低,成像质量差。为此,采用共反射面元(CommonReflectingElement)叠加技术,对下扬子地区的一条二维地震剖面进行了处理试验。处理中采用了地震信号归一化,优选属性参数和尽量多的共反射道集参与叠加等一系列措施,处理后的剖面质量得到了很大的改善。剖面上反射和绕射信息丰富,各种微弱的有用信息得到了加强,信噪比得到了提高。

This paper discussed the concept of common reflecting element (CRE) stacking, and illustrated its application with a real seismic line. In lower Yangtse river area, the middle Paleozoic structures are very complex, and seismic reflection data was of low signal-to-noise ratio. With CRE method, the author hopes to find a way to improve the imaging capability of seismic data.