基于多源信息约束反演的高精度层速度计算方法  

High Precision Interval Velocity Calculating Method Based on Multi-source Information Constrained Inversion

作　　者：李林峡[1] 熊晓军[1] 贺振华[1] 唐湘蓉[1] 

机构地区：[1]成都理工大学地球探测与信息技术教育部重点实验室,四川成都610059

出　　处：《石油天然气学报》2011年第9期68-71,166-167,共4页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(40904035)

摘　　要：层速度是地震勘探中一个重要的物性参数,如何准确地求取层速度也一直是地震勘探的核心问题,直接影响着地震勘探的各个环节及最终的地质成果。提出了一种获得高精度层速度的计算方法——多源信息约束反演,即用非线性反演中的模拟退火算法,结合井和层位等多源信息,反演得到高精度的层速度。该方法在四川某地区碎屑岩储层的层速度反演中取得了良好的效果。Interval velocity was a significant physical parameter in seismic exploration,calculating interval velocity accurately also was a key problem,which directly influenced every link of seismic prospecting and the final geological result.A new method,multi-source information constrained inversion method was put forward to obtain the high precision interval velocity.Multi-source information was set as constrained condition and simulated annealing method was used to inverse interval velocity.Then,this method is used for clastic reservoir inversion in Sichuan Province,and a good geological result is obtained.

关 键 词：层速度 模拟退火算法 多源信息 

分 类 号：P631.44[天文地球—地质矿产勘探]