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Du Tonglin
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Tang Xiaoyong,Pu Liming
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2013 Vol.3

    Treatment Method of Immobile Grid in Streamline Numerical Simulation
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    Key Words：Streamline numerical simulation； Immobile grid； Streamline tracking； Numerical simulation
    Abstract： For oildoms with poor lateral continuity of sand body shown as a lentoid in lateral distribution， hydrodynamic retention area caused by fault or shale in local area， it is necessary to treat non-flowable areas in numerical simulation. The non-flowable areas will become non-flowable grids， also known as immobile grids or dead grids after be gridded. Presence of non-flowable areas can affect pressure filed calculation and streamline tracing process in streamline numerical simulation， which will lead to failure of such simulation. So it is important to study the dead grids. Introduced are such three methods for treating non-flowable grids in differential process as direct calculation method， “mirror image” method and grid setting method. The grid setting method has such advantages as good regularity and simple calculation and better than the others. Example calculation and analysis results show that such method is effective. In the case of non-flowable areas existing in simulation area， the grid setting method can solve problems effectively occurring in streamline numerical simulation.
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