f Modelling Secondary Oil Migration Efficiency

A commonly accepted thesis is that liquid hydrocarbons migrate as a continuons phase (stringers) in the subsurface. These stringers migrate under buoyant and hydrodynamic forces and to a lesser extent thermal and electro-chemical (Schowalter, 1979; McAuliffe, 1980). As the stringers migrate, the head of the stringer is moving through pristine, water saturated gore space and initiates local drainage conditions (assuming water as the wetting phase).