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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。
The advent of complex tract analysis techniques has taken seismic exploration one step further from tectonic interpretation to structural lithology interpretation and reservoir prediction. The main characteristic parameter is the seismic dynamic parameter of the main characteristic or spectral characteristic of the reflected wave extracted in the time-frequency domain. It is an improvement on the processing of the three-moment parameter and highlights the eigenvalues that reflect the lithological combination property. In this paper, the Hilbert transform On the basis of extracting three instantaneous parameters, the method of extracting the main characteristic parameters is given, and the factors affecting the calculation precision of the main characteristic parameters and the method of improving the calculation precision are analyzed, so as to enhance the capability of the method to solve the geological problems in the seismic exploration, It is of great guiding significance to hydrocarbon prediction and reservoir comprehensive analysis.