一种动态的道集拉平方法研究及应用  

Research and application of a dynamic gather flatten method

作　　者：周鹏 刘志斌 张益明 王志红 

机构地区：[1]中海油研究总院,北京100028

出　　处：《断块油气田》2015年第1期58-61,66,共5页Fault-Block Oil & Gas Field

基　　金：国家油气重大专项课题"南海深水区油气勘探地球物理关键技术"(2011ZX05025-001)

摘　　要：随着石油勘探开发的深入,地震资料的应用越来越重要,对于地震资料的品质要求越来越高。实际应用中,地震道集往往存在动校不平,有剩余时差,对叠加成像、构造解释、属性分析等存在影响。为解决地震道集不平,提出了一种与剩余速度无关的动态道集拉平方法,该方法具有很好的适应性,通过互相关方法的选取和参数的调整,能适应各个地区资料地震道集的剩余时差情况。应用实例表明,该方法能较好地对叠前地震道集进行剩余时差校正,改善道集的品质和成像质量,提高断层成像。With the deepening of petroleum exploration and development, seismic data are more applied and the request for seismic data quality is higher and higher. In practice, there are often seismic gathers that are not flatten, and there are often residual moveout,which affect seismic imaging, structural interpretation and attribute analysis. This paper studies the problems in seismic gather processing and presents a method that is a kind of dynamic cross correlation of absolute value. It has nothing to do with the residual velocity and has a good adaptability by controlling and adjusting the parameters of cross correlation. A large number of application examples show that the seismic gathers can be flatten and the residual moveout can be removed by the method, improving the gather quality, imaging quality and the tomographic imaging of fault.

关 键 词：地震道集 动校正 剩余时差 道集拉平 互相关 断层 

分 类 号：TE132.14[石油与天然气工程—油气勘探] P631[天文地球—地质矿产勘探]