Oil & Gas Geology ›› 2008, Vol. 29 ›› Issue (4): 527-532.doi: 10.11743/ogg20080417

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Numerical simulation analysis of secondary hydrocarbon migration

Zhou Bo1,2, Jin Zhijun1, Wang Yi1   

  1. 1. SINOPEC Exploration and production Research Institute, Beijing 100083, China;
    2. China University of Geosciences, Beijing 100083, China
  • Received:2008-05-04 Online:2008-08-24 Published:2012-01-16

Abstract:

The analysis of the physical experiment and numerical simulation results shows various oil migration modes.There are three modes of oil migration under actual geological conditions:stable mode,fingering mode, and spring mode.Different migration modes have different patterns of migration,thus using single numerical simulation method to simulate all the modes is not very scientific.Therefore,different migration modes shall be described with different numerical simulation methods.Invasion percolation method is suitable for the description of the fingering mode and the spring mode,while the Darcy equation is applicable for the stable mode.The fluid potential method can be applied to all the three modes,but its results are qualitative.In order to determine the real oil migration process ,the mathematical simulation shall be based on detailed geological data,oil and gas shows and geochemical data.

Key words: migration pathway, migration mode, mathematical simulation, secondary hydrocarbon migration

CLC Number: