New upscaling technique for compositional reservoir simulations of miscible gas injection

Journal of Petroleum Science and Engineering(2019)

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摘要
The use of compositional reservoir simulation is necessary to better represent the physical phenomena associated with enhanced oil recovery methods, particularly with miscible or near-miscible gas injection processes. However, upscaling of the geological fine model is required because computational costs can make it unpractical to perform compositional simulations in fine-scale models. Therefore, upscaling of fine-scale geological models is important and the use of coarse-scale models in reservoir simulation is necessary to reduce computational time. However, it can degenerate results due to loss of resolution of the small-scale phenomena, averaging of sub-grid heterogeneity and numerical dispersion, especially in oil fields where miscible gas is injected, continuously or alternatively with water (WAG).
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关键词
Upscaling technique,Compositional simulation,Miscible gas injection
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