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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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slide1

Hydrocarbon Migration

Petroleum Geology Class 745

Spring 2002

Istvan Csato

University of South Carolina

Department of Geological Sciences

slide2

Buoyancy

Hydrostatic condition:

slide3

Capillary Pressure

Capillary pressure

Condition of migration

slide4

Migration

Critical height of oil stringer:

slide6

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

slide7

Migration

Vertical flow:

Updip flow at 2o slope:

qo=0.4 cm/year

qo=11.3 cm/year

slide12

Origin of Fluid Flow

1. Restricted-compaction

2.Meteoric Water Recharge

slide13

Fluid Flow - Compaction

Fluid Flow

Compaction

Mass conservation equation:

Fluid flow equation (Darcy’s Law):

slide16

Primary and Secondary Migration as a function

of rock permeability

Secondary Migration

Primary Migration

slide22

Origin of Fluid Flow

1. Restricted-compaction

2.Meteoric Water Recharge