基于属性评价分析的三维观测系统优化设计与应用效果

三维观测系统设计与属性分析是地震数据采集的一个重要环节，其中面元间属性分布的合理性又是影响地震数据处理的重要因素之一。首先基于前人给出的面元属性定量分析方法，计算对比了几种不同类型观测系统的均匀度，以优选面元属性的均匀性最好的观测系统；然后从观测系统属性的变化规律出发，根据采集脚印周期的计算公式，逐一分析了接收点距、激发点距、束线距等参数变化对采集脚印的影响，从而明确观测系统参数优化的方向。在胜利探区三维观测系统设计和优选中取得了较好的应用效果，为三维观测系统优选和参数优化提供了实用的方法技术手段。

3D geometry design and properties analysis are the important parts of the seismic data acquisition.The rationality of attributes distribution between bins is one of the major factors that affect the seismic data processing.Firstly,to select the geometry with the best uniformity,we calculate and compare the uniformity of several types of geometries based on the bin attributes analysis methods prepared by others.And then,according to the changing rules of geometry properties and the formula of acquisition footprint cycle,we analyze the impact of receiver spacing,source spacing and swath line spacing on acquisition footprint to figure out the ways of parameter optimization.The technology,as a practical tool for 3D geometry design and parameter optimization,has obtained the good effect for 3D geometry optimization design and seismic data acquisition in Shengli oilfield.