基于波动方程数值模拟的地震构造精细解释技术  

Fine Interpretation of Seismic Structures Based on Wave-Equation Numerical Simulation

作　　者：熊晓军[1] 贺振华[1] 林凯[1] 徐敏 

机构地区：[1]成都理工大学信息工程学院,成都610059 [2]中国石油川庆钻探工程有限公司地球物理勘探公司,成都610213

出　　处：《新疆石油地质》2011年第4期373-375,共3页Xinjiang Petroleum Geology

基　　金：国家自然科学基金项目(40904035)

摘　　要：为了准确识别生物礁等复杂地质体的分布范围、内部储集层结构等细节信息,提出了一种新的基于波动方程数值模拟的地震构造精细解释技术。该技术采用频率-波数域单程波动方程进行地震数值模拟,通过对比模拟记录与偏移前、后的实际地震剖面的主要反射特征,逐次修改地震构造解释模型,从而得到最终的构造精细解释结果。该技术采用频率-波数域单程波场延拓算子进行计算,不仅计算效率高,而且波场模拟记录信噪比高,便于目标地质体有效反射波场特征的对比。该技术充分利用了偏移前、后地震剖面的反射特征,有助于降低地震构造解释的多解性,获得精细的地震构造解释模型。To accurately identify the details of reef and other complex structures,this paper proposes a new seismic structural interpretation method based on wave-equation numerical simulation,by which the seismic numerical simulation based on one-way wave-equation in F-K domain can be made.Comparing the modeling records with practical seismic records before and after seismic migration,the original geological model of seismic structural interpretation can be successively modified.By using one-way wave-field extrapolation operators,the method not only has high computational efficiency,but also can obtain high S/N records,which is very important for the contrast of wave-field characteristics.Moreover,adequately employing the practical records before and after seismic migration in this method,the multiple solutions of seismic structural interpretation can be effectively reduced,and thus obtaining the fine structural interpretation model.

关 键 词：地震解释 正演模拟 数值模拟 波动方程 

分 类 号：P631.445[天文地球—地质矿产勘探]