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| Calculation method of porosity and permeability in fractured anisotropic oil reservoirs |
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ZHANG Ji-chang1,2,LIU Yue-tian3,DING Yan-fei4,GUOXiao-zhe3,ZHANG Hua-chang2,CHENG Shi-qing3
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(1. College of Resource & Security Engineering in China University of Mining & Technology，Beijing 100083，China ;2. Exploration and Development Research Institute of Liaole Oilfield，Panjin 124010，Liaoning Province，China ;3.Faculty of Petroleum Engineering in China University of Petroleum ，Beijing 102249， China ;4.Gaosheng OH Production Plant of Liaofie Oilfield，Panjin 124010， Liaoning Province，China )
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| Abstract: |
| Fractured reservoirs media consist of matrix and effective fractures. The porosity and permeability of matrix，and the width，density and direction parameters of fractures were obtained by core analysis，well logging，seism and thin section observation methods. On the basis of reservoir fluid flow model， the assembled permeability of the formation was determined by well production，well testing，production test or formation testing data. By integrating formation permeability and fracture parameters above，the anisotropic permeability was calculated. Utilizing the stochastic fracture model， porosity of fracture system was determined from fracture width and permeability. Quantitative correlations among the permeability and porosity of fracture and matrix systems were provided. The permeability and porosity distributions given are valid and com- |
| Key words: fracture reservoirs effective fracture static characterization fluid flow modeling quantitative relation |
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