Abstract：Seismic interval veIocity is an important basis for quantitative seis-mic interpretation,and its contribution to solving geological problems depends on its accuracy and the depth of a geological target.Generally speaking,the higher the accuracy is,and the more shallow the geolo-gical tagert is,the higher the ability for us to solve geological problem using interval velocity is.If interval velocity accuracy is 5% and depth is 1000m,a gas reservoir 26m thick can be identified.To ascertain lithology using interval velocity.we must make in-terval velocity error smaller than velocity variation due to lithology variation.Interval velocity anomaly can be covered when the interval elocity error is higher than velocity variation due to lithology varia-tion,so such an interval velocity can not be used in lithology re-search.
庞雄奇, 陈章明, 王江. 地震层速度精度分析及其在油气勘探中的应用[J]. 石油地球物理勘探, 1990, 25(4): 459-468.
Pang Xiongqi, Chen Zhangming, Wang Jiang. Analysis of seismicinterval velocity accuracy and its application to hydrocarbon explora-tion. OGP, 1990, 25(4): 459-468.
