三维叠前时间偏移技术研究——以柴达木盆地NYS地区为例  

Study on 3D pre-stack time migration technology:An example from NYS area of Qaidam Basin

作　　者：张涛[1] 胡自多[1] 刘文卿[1] 鲁烈琴[1] 邵喜春[1] 

机构地区：[1]中国石油勘探开发研究院西北分院

出　　处：《岩性油气藏》2010年第2期90-94,共5页Lithologic Reservoirs

摘　　要：柴达木盆地NYS地区断层和裂缝发育,地质构造复杂,常规叠加成像方法由于成像精度不够,难以满足对构造和断层精细解释的需要。文章针对NYS地区的地质构造特征,对克希霍夫叠前时间偏移的速度和偏移孔径等重要参数进行了优选,使得叠前成像质量明显提高,达到了精细构造解释的要求。The NYS area of Qaidam Basin is characterized by well developed faults and fractures,and complex geological structure.Because of the poor imaging accuracy,the conventional stack imaging method is difficult to carry out the fine interpretation of structure and fault.Aimed at the tectonic features of NYS area,the parameters of Kirchhoff pre-stack migration velocity and migration aperture are optimized,which improves the pre-stack imaging quality and realize fine geological structure interpretation.

关 键 词：克希霍夫积分法 叠前时间偏移 浮动基准面 偏移孔径 反假频 柴达木盆地 

分 类 号：P631.4[天文地球—地质矿产勘探]