Position: Home > Articles > A New Reservoir Inversion Method Based on Multiple-point Geostatistics
Journal of Yangtze University(Natural Science Edition)Agricultural Science Volumn
2018
(5)
22-26+5
一种基于多点地质统计的储层反演新方法
作 者：
尹艳树;赵学思;王立鑫
单 位：
长江大学地球科学学院
关键词：
两点统计反演;多点地质统计反演;储层反演;岩相
摘 要：
提出了一种新的基于多点地质统计学的储层反演方法。首先通过测井资料统计分析确定不同岩相的弹性参数概率分布,在地质研究上构建训练图像;在地震体上获得反射系数;其次通过多点地质统计预测岩相空间分布,根据岩性弹性参数概率分布随机抽取该岩相的速度和密度值;最后,利用速度和密度值与反射系数褶积获得合成地震道,并与理论地震道拟合,获得最优速度、密度及波阻抗体,完成储层反演。理论模型测试表明,相比于两点地质统计反演,多点地质统计反演结果更贴近理论地震记录,相似度高,误差小,可以在实际储层反演中推广应用。
译 名：
A New Reservoir Inversion Method Based on Multiple-point Geostatistics
作 者：
Yin Yanshu;Zhao Xuesi;Wang Lixin;Yangtze University;
关键词：
two-point geostatistics seismic inversion;;multi-point geostatistics seismic inversion;;reservoir inversion;;lithofacies
摘 要：
This paper introduces a new seismic inversion method based on multiple point geostatistics.Firstly,the probability distribution of elastic parameters of different lithofacies is determined by statistical analysis of logging data.The training image is acquired by detail geological analysis and the reflection coefficient is extracted from the seismic data.Secondly,the multiple point geostatistics mehod is used to forecast the spatial distribution of the lithofacies,and the elastic parameters are sampled from the distribution under the constrain of the lithofacies.Finally,the synthetic seismic trace is obtained by convolution of velocity and density with reflection coefficient,and it is fitted with theoretical seismic traces for obtaining the best velocity,density and wave resistance antibody for the reservoir inversion.The theoretical model tests show that,compared with the two-point geostatistical inversion,the multi-point geostatistical inversion results are closer to the theoretical seismic records,it has a high similarity and small error.So the new method is promoted to be used in real reservoir inversion.
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