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

• Published in: Journal of the Japan Petroleum Institute Vol. 47; no. 1; pp. 54 - 58
• Main Authors: Jamshidnezhad, M., Montazer-Rahmati, M. M., Sajjadian, V. A.
• Format: Journal Article
• Language: English
• Published: Tokyo The Japan Petroleum Institute 2004; Sekiyu Gakkai; Japan Science and Technology Agency
• Subjects: Applied sciences; Cores; Crude oil, natural gas and petroleum products; Energy; Exact sciences and technology; Experiment; Flow rates; Fluid flow; Fractured porous media; Fuels; Injection; Mass transfer; Matrix-fracture mass transfer; Miscible displacement; Oil recovery; Porous media; Heptane; Kerosene
• DOI: 10.1627/jpi.47.54
• ISSN: 1346-8804

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.