塔中围斜区连片精细速度建模与变速成图

塔中围斜区断裂构造复杂,构造形态难以落实。由于数据采集年代、施工参数、处理方法、野外地震和地质条件等方面的差异,连片整体速度研究及构造成图是研究该地区构造形态的关键。针对整体构造评价薄弱的问题及勘探部署难以决策的迫切需求,研究了塔中围斜区八个区块连片精细速度建模及变速成图技术。通过速度基准面统一技术、速度闭合差分析校正技术和基于解释层位框架控制的速度去噪技术的研究,获得了塔中八连片整体速度模型及各地震反射层整体构造图。

Detailed velocity modeling and velocity-variable structure mapping of eight-piecing processing in Tazhong area

The faulted structures in Tazhong area is complex,which makes it hard to ascertain the shape of structures.Because of the difference on acquisition time,parameters,processing methods,seismic and geologic conditions,the problem is still unsolved for piecing velocity modeling and structure mapping.Aiming at the poor whole structure evaluation and difficulty in exploration deployment,the detailed velocity modeling and velocity-variable structure mapping of eight-piecing processing in Tazhong area has been probed.Based on the study of velocity datum unified technique,velocity closure analysis and correction technique,and velocity de-noise technique controlled by interpreted layer framework,the whole velocity model of eight-piecing area has been achieved,as well as the whole structure map of every reflections.