共反射面元叠加技术在南海北部莺—琼盆地中的应用  

APPLICATION OF STACKING TECHNIQUE FOR COMMON REFLECTION SURFACE IN YINGGEHAI AND QIONGDONGNAN BASIN

作　　者：袁全社 李列 柴继堂 邓勇 李振春[2] 

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]中国石油大学(华东)地球资源与信息学院,青岛266555

出　　处：《海洋地质前沿》2011年第10期41-48,共8页Marine Geology Frontiers

基　　金："十一五"国家重大科技攻关项目(2008ZX05023-004-01)

摘　　要：随着莺—琼盆地油气勘探开发的不断深入,2 700m以下的中深层地震资料品质迫切需要提高,而改善信噪比提高成像质量则是需要深入研究的重点内容之一。基于共反射面元(CRS)叠加在改善中深层地震资料信噪比方面具有理论和技术应用优势,由于考虑了反射层的局部特征和第一菲涅耳带内的全部反射,对复杂地质问题的适应性得以增强,真正实现了高信噪比叠加,从而改善中深层低信噪比区的成像质量。通过理论研究分析、模型试处理及莺—琼盆地实际地震资料处理中具体的应用与试验,取得了明显的效果,即该区中深层地震资料信噪比显著增强,大大提高了解释的可靠程度。总之,共反射面元叠加技术在莺—琼盆地具有较高的推广应用价值。With the in-depth geological study in the Yinggehai and Qiongdongnan Basin, it is required to improve the quality of seismic data for deep strata （under-2 700 rn）. Enhancing S/N ratio for ima- ges is one of the choises. The technique of common reflection surface stacking （CRS） has a lot of advantages. It takes not only partial characteristics but also all the reflections in the Fresnel zone into account. CRS stack has good adaptability to a complex geological situation. It can achieve real high S/ N ratio stacking for better imaging in the deep layer. The article combines the theoretical analysis, model testing and seismic data processing together. S/N ratio and interpretation reliability are improved for deep seismic data. In this regard, CRS stacking is worthy to be promoted in the Yinggehai and Qiongdongnan Basin.

关 键 词：信噪比 共反射面叠加 成像质量 莺-琼盆地 

分 类 号：P631.42[天文地球—地质矿产勘探]