基于谱分解技术预测油水界面方法与应用

The Study and Apllication of Calculating Oil-water Interface Based on Spectral Decomposition

喇萨杏油田是3个大型背斜构造组成的大型背斜构造油气藏,各油层组储层比较发育,在背斜构造上油水以最简单的形式组合在一起(上油下水结构)。但是在各种地质和物理性质的影响下,使得油水关系又没有那么简单的规律,一般是高低不平的曲面,因此常规地震方法很难对油水界面进行预测。本文将研究区内录井、测井、试油资料和三维地震资料相结合,应用谱分解技术从单井着手分析,并找到过渡带研究区内油底和水顶的频谱规律,进而采取谱分解基础上的多属性体运算等步骤达到了预测油水界面的目标,进而使油水界面从点到线地震预测成为可能。

LaSaXing oilfield is a large anticline oil and gas 3large anticline structure consisting of the reservoir,the reservoir development,the anticline oil and water in the most simple form of combined together(oil and water structure).But in the influence of various geological and physical properties of the oil,and not so simple rules,is generally the surface uneven,so the conventional seismic method is difficult to predict the oil-water interface.This paper will study area logging,logging,oil test data and 3Dseismic data with the application of spectrum decomposition technique,from single well to analysis,and find the transition band of spectrum pattern in the region oil bottom and top of the water,and then take the spectrum multiple attribute body operation decomposition based on steps to predict the oil-water interface the goal,then the oil-water interface from the point to predict earthquake may be line.