复杂构造区三维观测系统设计的几点探讨  

Discussions on 3D Observation System Design in Complex Structure Area

作　　者：赵绍广 余圣华 罗春波[1] 李永春[1] 解广宇 隋竞函 

机构地区：[1]中石油大庆钻探工程公司地球物理勘探二公司,吉林松原131000 [2]长江大学地球物理与石油资源学院,湖北武汉430100

出　　处：《长江大学学报（自科版）（中旬）》2015年第7期25-28,4,共4页Journal of Yangtze University(Nature Science Edition)

摘　　要：常规地震勘探采集中,观测系统设计是基于共中心点(CMP)理论进行的,传统的地震采集设计方法已不能完全满足日趋复杂的勘探状况。从叠加响应出发,分析了观测系统的采集脚印和叠前偏移噪声对地震采集数据的影响,通过地震照明技术,得到了基于目的层共反射点(CRP)的面元信息,面元随偏移距变化的覆盖次数和能量(振幅)分布,经过优选炮检点位置,可以使目的层覆盖次数以及面元叠加能量尽量均匀,提高地震资料成像效果。The observation system design was based on the common midpoint(CMP)theory in the data acquisition of conventional seismic exploration,and the design method of traditional seismic acquisition could not completely meet the needs of increasingly complicated exploration situation.In this paper,starting from the stacked response,the influence of footprints of the observation system and the prestack migration noise on the data acquisition was analyzed,through the seismic lighting technology,the bin information of common reflection point(CRP)based on objective layer was obtained,the folds and energy(amplitude)distribution were change with offset.And through optimizing the position of shots and receivers,the folds and stack bin energy of objective layer can be even as far as possible,it can be used to improve the effect of imaging data.

关 键 词：采集脚印 叠加响应 偏移噪声 地震照明 

分 类 号：P631.44[天文地球—地质矿产勘探]