The resource of low-permeability oilfield takes up the dominate positions for difficult-to-produce reserves,which is the stress for study.Enhancing oil recovery by carbon dioxide injection has been used in many reservoirs successfully home and abroad.This paper does some research on the migration rule of carbon dioxide in the porous media in the lab.Some results are got.For example,water phase will affect the diffusion rate for CO2 seriously,at the same time,the aqueous phase reacting with mineral blocks th...
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