摘要
在海洋三维四分量(3D4C)地震数据的处理过程中,如果海上不同区块数据的震源不同,在资料拼接时会出现不匹配问题。目前纵波资料的拼接多采用匹配滤波,但该方法在转换波的拼接中应用较少,对于3D4C数据单独求取转换波的匹配滤波算子又会大大增加成本,由于同一震源激发同一检波器接收到的四分量数据的相位一致,为此将纵波的叠后匹配滤波算子应用在转换波的叠前道集中,对其相位进行匹配后再进行共转换点叠加,结合南美某工区的3D4C数据,取得了良好的应用效果。
In the course of processing the seismic data of marine 3D4 C,the seismic data in the process of splicing will be mismatched if the data of hypocenter are different in different oceanic blocks.Now the matched filtering is widely used in data splice for longitudinal wave,but rarely for converted wave.And it will increase the cost greatly for obtaining the matched filtering operator of converted wave by single 3D4 Cdata.Since the phase of the four component data received by the same hypocenter to inspire the same detector is consistent,the post stack matched filtering operator of the longitudinal wave is applied to the pre-stack trace of converted wave,then the common conversion point stacking will proceed after matching phase.Good application effect is gained within the 3D4 Cseismic data in anarea of South America.
作者
何俊强
李玉
马志波
He Junqiang Li Yu Ma Zhibo(School of Geophysics and Information Technology, China University of Geosciences , Beijing 100083, China Key Laboratory of Underground Information Detection Technique and Instrnment of Ministry of Education, China University of Geosciences, Beijing 100083, China Golden Miles Petrotech, Inc, Beijing 100085, China)
出处
《工程地球物理学报》
2016年第6期707-711,共5页
Chinese Journal of Engineering Geophysics
基金
国家高技术研究发展计划(863计划)项目(编号:2013AA064201)
关键词
匹配滤波
海洋地震勘探
转换波
3D4C
资料拼接
matched filtering
marine seismic exploration
converted wave
3D4C
data splicing
