Experimental Study of Miscible Fluid Injection in Iranian Artificially Fractured Porous Media

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  • イラン産人工フラクチャーコアを使ったミシブル置換効果の実験的検証

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Miscible displacement experiments were performed to study recovery efficiency by gravity drainage in Asmari fractured cores. We used vertically mounted 0.0381 m diameter fractured and non-fractured cores. Kerosene was used as the oil (displaced fluid) and heptane as the displacing fluid. Effects of the fracture, displacement rate and matrix-fracture mass transfer on the oil recovery were studied. Experimental results showed that for displacement rates below the critical flow rate, a significant amount of the displacing fluid flows from fracture to the matrix and a significant amount of the matrix oil flows from matrix to fracture. Thus, for displacement rates below critical flow rate, miscible injection in fractured porous media could be very efficient.<br>

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