Hilbert变换地震波主特征参数误差分析

Error Analysis of Main Characteristic Parameters of Seismic Wave Using Hilbert Transformation

复数道分析技术出现使地震勘探由构造解释向构造岩性解释和储层预测跨进了一步。而主特征参数是指在时间频率域提取的可表征反射波主特征或频谱特征的地震动力学参数,是对三瞬参数处理的改进,突出反映岩性组合性质的特征值,本文在Hilbert变换提取三瞬参数的基础上,给出主特征参数的提取方法,并分析了影响主特征参数计算精度的因素和寻找提高计算精度的方法,达到增强该方法解决地震勘探中的地质问题的能力,对油气预测和油藏综合分析有较大的指导意义。

Complex trace analysis technique makes the seismic exploration go further from the structure interpretation to Jithology interpretation and reservoir prediction. The main characteristic parameters refer to the reflective wave main characteristics extracted by time frequency or the frequency spectrum characteristics of the seismic dynamic parameters, which makes an improvement on the three instantaneous parameters that reflected the char- acteristics of lithologic combination property. On the basis of extracting the three instanta- neous parameters using Hilbert transform,the extracting method of the main characteristic parameters are proposed. The factors of the calculation precision and the method of impro- ving calculation precision are analyzed so as to enhance the ability of solving the seismic ex- ploration problems, so the research will be of guiding significance in the oil--gas prediction or reservoir comprehensive analysis.