【摘要】 地震相分析是进行含油气盆地沉积体系研究的重要手段。传统的地震相分析方法主要根据地震属性或波形特征的相似性进行地震相的划分。当岩性组合复杂造成地震属性难以和地震相建立较为匹配的相关关系时,传统地震相分析方法存在着较强的多解性。本文提出基于沉积参数的地震相预测方法是首先根据地震属性和测井数据预测出砂层厚度、油层厚度、灰质厚度、地层厚度等的沉积参数的分布特征,再将这些沉积参数输入进行地震相的划分。与直接使用地震属性相比,沉积参数能更好地刻画沉积微相特征,因而可以有效降低多解性。该方法在济阳坳陷车西地区深层勘探中取得了良好的应用效果。更多还原

【Abstract】 The seismic facies analysis is very important for studying the sedimentary system in petroleum-bearing basins.The traditional method of the seismic facies analysis is mainly classified by seismic attributes or waveform similarity.When the complex of lithology association can not easily make seismic attributes match with seismic facies,the traditional method might give more than one result.In this paper,we propose a seismic facies forecasting method based on deposition parameters,in which the deposition parameter distribution characteristics of the sand thickness,oil thickness,limestone thickness,layer thickness and so on are performed by seismic attributes and logging data,and then the deposition parameters are regarded as input data to classify the seismic facies.Compared with the traditional method,the new method can display the characteristics of the deposition microfacies much better,so multi-results can be reduced effectively.The new method obtains a good application effect in deep exploration in Jingyang depression of Chexi.更多还原