Hydrocarbon preservation under stable geological conditions

1 Hydrocarbon preservation under stable geological conditions [Pg.183]

A kinetic trap that is no longer charged with hydrocarbons will loose its accumulated hydrocarbons in time. In addition, when the geological and associated hydrodynamic conditions are stable, a hydrocarbon accumulation may be destroyed by diffusion or by removal of hydrocarbons in aqueous solution. Changes in the chemical composition of accumulated hydrocarbons may result from inorganic oxidation, biodegradation and water washing. [Pg.183]

The occurrence of inorganic oxidation of hydrocarbons is restricted largely to near-surface accumulations (e.g. Bailey et al. 1973). [Pg.184]

Biodegradation of oil in shallow reservoirs is a common phenomena in many basins (Connan, 1984). The biodegradation of oil is caused by the selective [Pg.184]

Biodegradation effects on gross properties of crude oils [Pg.184]

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