Hydrocarbon Migration

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Hydrocarbon Migration
Petroleum Geology Class 745 Spring 2002
Istvan Csato University of South
Carolina Department of Geological Sciences
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Buoyancy
Hydrostatic condition
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Capillary Pressure
Capillary pressure
Condition of migration
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Migration
Critical height of oil stringer
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Migration
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Migration
Darcys 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
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Migration
Vertical flow
Updip flow at 2o slope qo0.4 cm/year
qo11.3 cm/year
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Hydrodynamic Conditions
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Hydrodynamic Traps
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Compaction
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Overpressure
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Origin of Fluid Flow
1. Restricted-compaction
2. Meteoric Water Recharge
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Fluid Flow - Compaction
Fluid Flow
Compaction
Mass conservation equation

Fluid flow equation (Darcys Law)
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Effective Stress - Porosity
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Hydraulic fracturing
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Primary and Secondary Migration as a function of
rock permeability
Secondary Migration
Primary Migration
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Migration and Accumulation
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Migration from Shale to Sandstone
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Migration from Shale to Sandstone
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Migration through Fractures
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Example
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Origin of Fluid Flow
1. Restricted-compaction
2. Meteoric Water Recharge
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Hydrodynamic Traps
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Tilt of Oil-Water Contact