Abstract
S-16 block of YSL oilfield is fault lithologic deposit. For the practical problems of low permeability, high injection pressure causing to difficult injection and low degree of reserve recovery due to delaying the supplement of producing energy, this paper applies the module E300 of Eclipse to establishing the triaxiality and triphase compositional model of the simulated block which takes the 11Y67-611 and 11Y69-56 as the target wells, completing the numerical simulation study of optimizing parameters of CO2 huff and puff by using of the evaluation indexes of oil increment and the oil-draining rate. It provided theoretical reference for YSL oilfield to carry out CO2 huff and puff that its optimized parameters.
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