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以地震属性分析为基础,优选出相关程度高的地震属性,应用数学模型得到钻井处地震属性与孔隙度之间的多元线性回归方程。将该方程应用到非井点的地震属性上,从而实现煤储层孔隙度定量预测。研究发现,在沁水盆地石港矿区煤储层孔隙度与地震反射瞬时频率成线性相关,且相关程度较高,预测的效果明显,证明了用地震属性预测煤储层孔隙度是可行的。
Based on the analysis of seismic attributes, the seismic attributes with high degree of correlation are optimized, and the multiple linear regression equation between seismic attributes and porosity at drilling is obtained by using mathematical models. The equation is applied to the seismic attributes of non-well points, so as to realize the quantitative prediction of the coal reservoir porosity. It is found that the porosity of coal reservoir in Shigang mining area of Qinshui Basin is linearly correlated with the instantaneous frequency of seismic reflection, and the correlation degree is relatively high. The prediction effect is obvious, which proves that it is feasible to predict the porosity of coal reservoir by seismic attributes.