A New Type of Neural Network For Reservoir Identification Using Geophysical Well Logs |
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Authors: | Wenzheng Yue and Guo Tao |
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Institution: | (1) Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, People’s Republic of China;(2) CNPC Well Logging Key Laboratory, Petroleum University, Changping, Beijing, 102249, People’s Republic of China |
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Abstract: | We have developed a neural network algorithm of radial basis network (RBN) type for geoscience applications. This new probabilistic neural network (PNN), referred to as “gravity-capturing neural network,” employs multidimensional even distance and introduces the resultant force competition mechanism for the output layer. When used for geological pattern recognition with well-logging data, it avoids misjudgment due to a magnitude jump of a single parameter and can extract complex and hidden formulas from laboratory and field measurements more efficiently. A field case study of reservoir identification with geophysical well logs is presented to demonstrate the advantages of this neural network over the conventional PNN in such classification applications. |
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Keywords: | multidimension distance gravity capture radial basis network |
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