【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。更多还原

【Abstract】 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 m).Enhancing S/N ratio for images 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.更多还原