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Hydrocarbon Migration

Hydrocarbon Migration. Petroleum Geology Class 745 Spring 2002. Istvan Csato University of South Carolina Department of Geological Sciences. Buoyancy. Hydrostatic condition:. Capillary Pressure. Capillary pressure. Condition of migration. Migration. Critical height of oil stringer:.

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Hydrocarbon Migration

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  1. Hydrocarbon Migration Petroleum Geology Class 745 Spring 2002 Istvan Csato University of South Carolina Department of Geological Sciences

  2. Buoyancy Hydrostatic condition:

  3. Capillary Pressure Capillary pressure Condition of migration

  4. Migration Critical height of oil stringer:

  5. Migration

  6. Migration Darcy’s law: specific discharge [m/s] permeability of the matrix [m2] viscosity of oil [kg/m/s] mean radius of the rock pores [m] tortuosity porosity oil saturation

  7. Migration Vertical flow: Updip flow at 2o slope: qo=0.4 cm/year qo=11.3 cm/year

  8. Hydrodynamic Conditions

  9. Hydrodynamic Traps

  10. Compaction

  11. Overpressure

  12. Origin of Fluid Flow 1. Restricted-compaction 2.Meteoric Water Recharge

  13. Fluid Flow - Compaction Fluid Flow Compaction Mass conservation equation: Fluid flow equation (Darcy’s Law):

  14. Effective Stress - Porosity

  15. Hydraulic fracturing

  16. Primary and Secondary Migration as a function of rock permeability Secondary Migration Primary Migration

  17. Migration and Accumulation

  18. Migration from Shale to Sandstone

  19. Migration from Shale to Sandstone

  20. Migration through Fractures

  21. Example

  22. Origin of Fluid Flow 1. Restricted-compaction 2.Meteoric Water Recharge

  23. Hydrodynamic Traps

  24. Tilt of Oil-Water Contact

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