基于对应分析的地震属性油气检测方法

CORRESPONDENCE ANALYSIS BASED SEISMIC ATTRIBUTE HYDROCARBON DETECTION METHOD

由于目前采用的油气检测方法和技术多为定性或半定量，油气检测结果存在多解性和不确定性，因此将对应分析方法引入油气检测中，研究出一种基于对应分析技术的地震属性油气检测方法。该方法通过把多种地震属性变量作线性组合、变换得出具有代表性的相互独立的新变量，用以表征所有观测变量变化的主要信息，通过主要变量与已钻井油气显示信息建立对应关系进行油气检测。该方法的应用效果表明，其检测油气符合率高于现有的其他烃类检测技术，在勘探阶段的油气检测方面具有广泛的应用前景。

The hydrocarbon detection methods and techniques currently used are mostly qualitative or semiquantitarive ones, and there are ambiguity and uncertainty in the hydrocarbon detection results. For this reason, the correspondence analysis method is inducted into hydrocarbon detection and one correspondence analysis based seismic attribute hydrocarbon detection method is established. With the application of this method, many kinds of seismic attribute variables are combined linearly and then the representative and mutual independent new variables will be got to characterize the main information about the changes of all the observed variables. Based on the correlation established between the main variables and the hydrocarbon information collected form the drilled wells the hydrocarbon can be detected. The application of this method to Xingxi area in north Songliao basin indicates that the hydrocarbon detection coincidence rate is higher than that of other available hydrocarbon detection techniques. This method can be widely used to hydrocarbon detection.