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《Petroleum Geology & Oilfield Development in Daqing》 2008-05
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Improvement of random medium model and its application

CHEN Ke-yang1,LIU Hong-lin1,YANG Wei1,WU QING-ling2,CHEN Ke-xian3(1.College of Earth Science,Daqing Petroleum Institute,Daqing 163318,China;2.Exploration and Development Research Institute of Daqing Oilfield Company Ltd.,Daqing 163712,China;3.College of Chemistry Engineering and Materials Science,Zhejiang University of Technology,Hangzhou 310014,China)  
In order to depict the characteristics of complex lithologic hydrocarbon reservoir of volcanic rock and combined with this heterogenetic identity of practical stratum and auto-correlation functions of practical seismic record,we put forward improved intermixed auto-correlation functions according to theory of spectral factorization in stochastic process,which is added with periodic factor,and presented two kinds of scaling factor to quantitatively evaluate the magnitude of local disturbance.This random medium may describe the realistic media more agilely and precisely.By changing five statistics: the autocorrelation width,periodic factor,average value,variance and ambiguity,you can create different kinds of random interstitial medium in different scale,at the same time,we make up heterogenetic model of volcanic rock according to practical seismic record and use wave modeling analysis.The results show that it can depict random medium more neatly and expediently,and more effectively simulate details of the complex heterogeneous medium.
【CateGory Index】: P618.13
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