摘要
四维地震资料解释可以看成是一个动态油藏描述过程,其解释方法可分成直接分析法、地震属性分析方法和动态储集层描述方法。文中着重讨论了直接分析法和地震属性技术。直接分析法包括层间时差分析法、振幅分析法、速度分析法和频谱分析法,其基本特点是利用单个地震属性差值对四维地震资料进行解释。地震属性技术分析包括地震属性特征的提取、优化、标定和聚类分析四个方面的内容,它根据地震瞬时属性、层间属性和平面属性的差值的线性或非线性的优化方法对四维地震资料进行分析,以预测储集层特征和储集层流体性质及其变化,增强对油藏的监测能力。
4-D seismic data interpretation can be regarded as adynamic interpretation process of oil reservoir descrip-tion. The interpretation methods can be divided intodirect analysis method, seismic attribution analysismethod and dynamic reservoir description method. Thispaper discusses mainly direct analysis method and seis-mic attribution technology. Direct analysis method in-cludes interlayer time differential analysis, amplitudeanalysis, velocity analysis and spectrum analysis. Thebasic feature is to use the single seismic attribution dif-ferential value for interpretation of 4-D seismic data.Seismic attribution analysis method includes selection,optimization, calibration and classification of seismicattribution features. Based on linear and non-linear opti-mization of the differential value of seismic instant attri-bution, interbed attribution and plane attribution, itmakes analysis of 4-D seismic dare and predicts the re-servoir features and the fluid property and its changes inthe reservoir, increasing the ability to monitor the oilreservoir.
关键词
四维地震
储集层
地震勘探
地震资料解释
4-D seismic
direct analysis method
seismic attribution
reservoir features.
