Formative dynamic mechanism and applicable conditions of fractal characteristics of hydrocarbon reservoir

Key words:  reserves of hydrocarbon reservoir  power function  fractal dimension  hydrocarbon migration effective driving power  principle of minimum rate of energy dissipation

Abstract:

The fractal characteristics of formation dynamcis and favorable conditions of hydrocarbon reservoir were studied using reservoir dynamics and non-equilibrium thermodynamics. The results show that under a weak effective driving force of hydrocarbon migration, the distribution of hydrocarbon reservoir has a fractal characteristic. On the other hand, under a strength effective driving force of hydrocarbon migration, the distribution of hydrocarbon reservoir does not have a fractal characteristic. The value of fractal dimension D of hydrocarbon reservoir distribution roughly reflects the effective driving power of hydrocarbon migration. The larger the effective driving power is, the greater the fractal dimension D becomes, and vice versa. The principle of minimum rate of energy dissipation based on the weak effective driving force, is the dynamic mechanism and applicable conditions for the formation of fractal characteristics of oil and gas reservoirs in the basin.