各向异性叠前时间偏移技术在大庆探区的应用  

Application of anisotropic pre-stack time migration technique in Daqing exploration area

作　　者：孙长赞[1] 王建民[1] 冯文霞[1] 那晓敏 

机构地区：[1]大庆钻探工程公司地球物理勘探一公司,黑龙江大庆163357

出　　处：《石油地球物理勘探》2010年第A01期71-73,共3页Oil Geophysical Prospecting

摘　　要：各向异性叠前时间偏移技术不仅消除了介质各向异性地震成像精度的影响,而且能够解决叠前反演共反射点道集大炮检距数据校正过量的问题。本文介绍了VTI介质三维各向异性叠前时间偏移方法的基本原理、实现过程和技术关键,以及在大庆探区的应用效果。结果表明应用各向异性叠前时间偏移技术可使地震资料的成像精度得到较大幅度的提高,断点归位更加清楚准确,断层清晰,地震资料的横向分辨率得到进一步提高。The anisotropic pre-stack time migration technique not only eliminated the influence of medium anisotropy to the imaging accuracy,but also could solve the over correlation problem for the large offset data in the common reflection point gathers during pre-stack migration process.The basic principle,the realization process,the key techniques and the application results in Daqing exploration area of 3D anisotropic pre-stack time migration technique in the VTI medium were introduced in this paper.The research results show that application of the new technique could greatly improve the imaging accuracy,after migration the fault points are clearer and more accurate,the faults are more visible,and the horizontal resolution of the seismic data was further raised.

关 键 词：各向异性 叠前时间偏移 成像精度 

分 类 号：P631.443[天文地球—地质矿产勘探]