PRELIMINARY APPROACH TO THE DEFINITION AND CONFIRMATION OF EFFECTIVE PATHWAYS FOR MIGRATION AND ACCUMULATION

The distribution of pool forming systems and migration pathways for hydrocarbon decides the migration direction and amount of hydrocarbon.Starting with pore typed pathways in sandstone and aimed at resource evaluation,it is suggested in this paper that critical saturability should be defined by lower limit standards for industrial hydrocarbon fields(pools) in the areas of the same kind and the water flux of hydrocarbon accumulation areas in different periods.The trapped limits by this saturability value are effective pathways for migration and accumulation.The water flux on planes and profiles can be calculated separately using basin modeling result parameters,and so the distributive limits of effective pathways for migration and accumulation in the different periods of geological history be obtained.This will be advantageous to studying on the history and amount of migration and accumulation.