反假频POCS数据规则化及其在偏移成像中的应用  

Seismic data interpolation with anti-aliasing POCS method and its application in seismic migration imaging

作　　者：陈小春[1] 陈辉[1,2] 喻勤[3] 龙林[1] 

机构地区：[1]成都理工大学,四川成都610066 [2]成都理工大学数字地质四川省重点实验室,四川成都610066 [3]中国石化西南油气分公司勘探开发研究院,四川成都610041

出　　处：《石油地球物理勘探》2017年第1期13-19,共7页Oil Geophysical Prospecting

基　　金：国家自然科学基金项目(41304111);四川省科技厅重点项目(2016JY0200);四川省教育厅自然科学重点项目(14ZA0061;16ZB0101);"油气地球物理勘探"四川省青年科技创新研究团队专项计划(2016TD0023);成都理工大学优秀创新团队培育计划(KYTD201410);国家科技重大专项(2016ZX05002-004-05)等联合资助

摘　　要：受地形条件和障碍物等因素的影响,陆上地震数据采集容易出现地震道丢失现象,对地震资料的后续处理和解释造成不良影响。文中提出一种反假频凸集投影(POCS)插值方法,借助f-k域低频成分预测高频无假频成分,剔除混叠假频,达到恢复缺失地震道的目的。Marmousi模型数据试验说明凸集投影反假频插值能提高偏移成像品质。Some factors in field seismic data acquisition such as topography and obstacles cause often missing traces,which will greatly affect the subsequent processing and interpretation.To solve this kind of issues,we propose in this paper an anti-aliasing project onto convex sets (POCS) regularization method.This method utilizes the low-frequency component in the f-k domain to predict un-aliasing high-frequency component so that it can eliminate aliasing and restore missing seismic traces.Our experiment on Marmousi model shows that the proposed anti-aliasing POCS method can significantly improve migration imaging quality. © 2017, Editorial Department OIL GEOPHYSICAL PROSPECTING. All right reserved.

关 键 词：反假频 凸集投影(POCS) 偏移 规则化 

分 类 号：P631[天文地球—地质矿产勘探]