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《Well Logging Technology》 2006-03
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Automatic Identification of Sedimentary Microfacies with Log Data and Its Application

LIU Hong-qi,CHEN Ping,XIA Hong-quan(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum Institute,Chengdu,Sichuan 610500,China)  
Sedimentary microfacies determination is an important and basic work for reservoir description,which is very time-consuming and bald.But with development of oilfield,more and more well logging data and other information are available.A lot of references have set up the relationship of microfacies and well logging curves.So the geologists and reservoir engineers always want to determine microfacies automatically.However,it is difficult to depict the shapes of logging curves and imitate the thinking procession of geologists and convey it to computer.This paper provides a method which includes two steps to complete this work.The first is sedimentary unit division and the second is determination of sedimentary microfacies.Based on this method,these parameters can determine the shape types according to certain principle,computer program has been also developed to perform this work,and a log example is given to explain how to use this method.The results show this method is effective.
【CateGory Index】: P631.84
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