深层地震勘探激发井深探讨  

Discussion on Shot Depth of Deep Seismic Data Acquisition

作　　者：黄棱[1] 杨光大 韩立国[3] 

机构地区：[1]吉林石油集团公司地球物理勘探公司,吉林松原138000 [2]吉林油田分公司勘探部,吉林松原138000 [3]吉林大学地球探测科学与技术学院,长春130026

出　　处：《吉林大学学报（地球科学版）》2006年第S2期113-116,共4页Journal of Jilin University：Earth Science Edition

摘　　要：深层地震勘探野外资料采集的关键是在保证原始资料一定信噪比的基础上,同时兼顾分辨率,激发井深是决定资料品质的重要因素之一。通过对虚反射滤波作用分析,提出了充分利用虚反射能量设计最佳激发井深,增强下传地震波能量的采集方法。理论分析和试验资料表明,在高速层下4～7m的最佳激发岩性深度是深层勘探的理想井深。The key of deep seismic data acquisition is that resolution of seismic data is considered on the basis of the certainly s/n ratio,and shooting depth is one of major factor defined data quality. Analyzing ghost frequency filter response,the paper presented that the acquisition method fully using ghost energy to design the optimum shooting depth and strengthen the energy of down-propagation seisimic waves.Data analyzed theoretically and real data demonstrate that the optimum lithologies depth of 3-5 metre below high—speed layer is ideal shooting depth.

关 键 词：虚反射 深层勘探 激发井深 

分 类 号：P631.4[天文地球—地质矿产勘探]