乌拉尔-伏尔加区块高精度速度建模  

High-precision velocity modeling of Ural-Volga area,Russia

作　　者：周纳[1] 

机构地区：[1]中国石化胜利油田分公司物探研究院,山东东营257000

出　　处：《成都理工大学学报（自然科学版）》2008年第5期537-541,共5页Journal of Chengdu University of Technology: Science & Technology Edition

摘　　要：乌拉尔-伏尔加区块地质认识程度仅限于从周围油田获得的地质信息。作者根据常规速度分析资料作为偏移速度分析的初始速度模型和主要约束研究,对乌拉尔-伏尔加区块层速度进行修正分析。由此建立的速度模型,同一层速度差异不大,速度模型和偏移剖面吻合较好,盐丘边界清楚准确,说明速度模型准确合理,能够消除巨厚盐丘上覆地层影响,为进一步的勘探提供地质依据。Our acquaintance degree of geology in the Ural-Volga area is limited to the geologic information from oil fields around. Based on the conventional velocity used as an initial velocity model of the pre-stack depth migration and main constraint, the author analyses the methoding of amending interval velocity for this area. According to the amended interval velocity model, the difference of interval velocity is small in the same layer, the velocity model is fitted well with the migration profile, the salt dome boundaries are clear and accuracy, and it can eliminate the effect of the huge overlying strata of salt dome and supply the geology references for the late prospect.

关 键 词：叠前深度偏移 速度模型修正 盐丘构造 剩余延时谱 

分 类 号：P631.443[天文地球—地质矿产勘探]