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- W4225319057 abstract "Abstract The national policy of peak carbon dioxide emission and carbon neutrality has pointed out the technological direction for the development of the petroleum industry in China. In order to efficiently utilize CO 2 gas source to enhance oil recovery, n -butylamine is taken as the plugging channeling agent for experiment study to plug the produced channeling-path during the process of CO 2 flooding in ultra-low permeability reservoir. The contents of the experiment included three parts: reaction mechanism of n -butylamine with CO 2 , evaluation of the injection performance of n -butylamine, and the extent of enhanced oil recovery after plugging the gas channeling by using n -butylamine. Reaction product of n -butylamine and CO 2 is white solid, which is a type of organic urea so that it can be used to plug the gas channeling. N -butylamine has a good injection performance after adding protecting slug on the condition of high temperature. 80% of the whole volume of core can be spread after injecting 0.3 PV of n -butylamine. During plugging and displacement experiment of heterogeneous cores, oil recovery can be greatly enhanced by 25–30% after injecting n -butylamine. Experimental results show that it can provide a new train of thought for the gas injection development of fractured, heterogeneous and ultra-low permeability reservoirs by using n -butylamine to plug the high permeability area." @default.
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- W4225319057 date "2022-05-03" @default.
- W4225319057 modified "2023-10-14" @default.
- W4225319057 title "Experimental study on CO2 capture by using n-butylamine to plug the gas channeling to enhanced oil recovery" @default.
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- W4225319057 doi "https://doi.org/10.1007/s13202-022-01503-3" @default.
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