Secondary hydrocarbon migration in tectonically affected basins

3 Secondary hydrocarbon migration in tectonically affected basins [Pg.157]

Tectonic processes may influence both the groundwater pressure condition and the hydrogeological framework in a basin (Section 2.2), and as a consequence may affect the driving force for hydrocarbon migration and the [Pg.157]

The length of the path of secondary hydrocarbon migration may be a few metres to hundreds of kilometres laterally, and a few metres to kilometres vertically. [Pg.160]

The lateral flux of separate phase hydrocarbon migration through carrier rocks at depths of approximately 3 km, probably is in the order of millimetres to centimetres per year. The flux of hydrocarbons in aqueous solution is in the same order of magnitude as the flux for groundwater. [Pg.160]

The loss of separate phase hydrocarbons during secondary migration is indicated by the apparent residual saturation of hydrocarbons, which is on average in the order of 1 - 3% of the total available pore space of the carrier rocks through which hydrocarbons have migrated. [Pg.160]

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