鄂东南地区逆冲推覆构造带地震采集方法及效果分析  

Effect Analysis of Experiment on Seismic Acquisition Method for Thrust Faults Zone in Southeastern Hubei

作　　者：尚洪猛 

机构地区：[1]中国石化石油工程地球物理有限公司江汉分公司,湖北潜江433119

出　　处：《江汉石油职工大学学报》2014年第5期5-7,共3页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：鄂东南地区属于逆冲推覆地质构造,地震勘探资料信噪比低,叠加成像效果差。针对该地质构造,提高地震资料信噪比可从两方面入手:一是优化激发点位设计,应用地质模型炮检点布设模拟技术及加强检波器的耦合埋置工作,以此提高推覆体下伏地层的成像效果;二是采用宽线接收方式,拓宽反射面元和获取更全面的深层地震反射信息,以增加覆盖次数,提高地震资料信噪比,从而获得较高质量的叠加成像效果。Thrust faults in Southeastern Hubei are responsible for low SNR of seismic prospecting data and poor stack imaging result. To improve SN-R of seismic data in such geologic structural zones, it is necesry to proceed with two sides： the first is to improve shooting position design to improve imaging effect of nappe underlayer and the second is to use wide line recording to acquire more reflection information which contributes to sharply enhancing multiplicities by means of expanding the reflection bin in the subsequent processing ~ that the stack imaging result of higher qual- ity can be achieved.

关 键 词：逆冲推覆构造 采集方法 地质模型 宽线采集 地震剖面 

分 类 号：P631.4[天文地球—地质矿产勘探]