论文部分内容阅读
Petroleum migration and hydrocarbon accumulation has been conventionally investigated in the laboratory and field,principally by considering the interaction between the capillary and buoyancy force within carrier beds and the seals.The best oil migration pathways are generally believed to be the highly porous and permeable beds within a petroleum system.The best seals are normally considered to be the low permeable rocks.Oil migration in carrier beds of low porosity and permeability would require an unusually large driving force or oil column height and is thus rarely considered.