叠前偏移方法在辽河油田大民屯地区的应用  

THE APPLICATION OF PRESTACK MIGRATION METHOD IN DAMENTUN BASIN OF LIAOHE OILFIELD

作　　者：段云卿[1] 覃天[1] 杨文军[1] 高海燕[1] 

机构地区：[1]中国地质大学地下信息探测技术与仪器教育部重点实验室,北京100083

出　　处：《物探与化探》2008年第4期438-441,共4页Geophysical and Geochemical Exploration

摘　　要：辽河油田大民屯东、西2个斜坡带,构造复杂,倾角较陡,叠后时间偏移很难获得较理想的偏移归位效果。笔者在辽河油田大民屯地区开展了叠前偏移的研究和处理工作,分析和研究了适宜该工区的叠前偏移方法,研究了偏移参数选取技术,主要包括偏移速度建模、偏移孔径和偏移倾角选取技术,取得了较好的应用效果。On the slope areas of the eastern and western sides of Damintun basin in the Liaohe oilfield, the underground structure is complex, and the dip angle is rather steep. The migration location effect cannot be satisfactorily obtained by prestack time migration. The authors used the prestack time migration method adapted to this region and also studied the selection means for migration parameters, such as the construction of the migration velocity model and the choice of migration apertures and dip angles. The results are fairly satisfactory.

关 键 词：辽河油田 叠前偏移 叠后偏移 速度建模 

分 类 号：P631.4[天文地球—地质矿产勘探]