密点速度分析方法的探讨

A RESEARCH ON THE METHOD OF DENSE-POINTS VELOCITY ANALYSIS

地质矿产部海洋地质综合研究大队

速度分析方法研究是现代地震勘探的重要课题之一。本文探讨在常规速度分析基础上发展起来的一种新方法:密点速度分析。 本文首先讨论密点速度分析的原理和实现,绘出其一般处理流程框图。进一步讨论和这一方法的效果有关的问题,指出该方法较之传统方法具有一定优点。最后用实际资料试算验证理论分析,同时指出这类方法在应用上的某些局限性。 处理效果表明,该方法提供了一种速度分析的实用手段。它适用于较高精度叠加,并有可能进一步用于速度分析的其它方面。

The research for the methods of velocity analysis is one of the important subjects of seismic exploration nowadays. What we are discussing here in the paper is a new method-the dense-points velocity analysis, which is developed on the basis of the conventional ones of the kind.Firstly,the authors made a discussion on the principle and its feasi-abilits of the new method and the flow chart for processing is also given. Having had a further examination on the effects of the method, the authors Pointed out that the method recommended is more advantageous than those of the conventionalones. The theoretical analysis has been verified through the computation of the measured data, the limitations of its use is also remarked.One can see from the practical result and efficiency that this method has produced a feasible and effective means for the analysis of the velocity. It would be suitable for the stack requiring even higher accuracy and possibly it will have some other uses for the velocity analysis any way.