This study uses a computerized formation evaluation system to investigate the permeability variation of high porous sandstone with reference to varying confining pressure, flowrate, time period of flow and temperature using brine as reservoir fluid. Permeability increases with increasing confining pressure, temperature and fluid flow period; however, it decreases with increasing fluid flowrates. The various permeabilities were determined at a confining pressure of 1060–3091 psi, a flow rate of 0.1–0.4 cc/min, an experiment duration of 10–40 min and a temperature of 26–42.3 °C. The results show that the time period of flow and fluid flowrates are two important parameters that are essential to obtaining an accurate permeability measurement but these cannot be operated at reservoir conditions during permeability determination, as these two parameters remain variables throughout the producing life of the reservoir.
Permeability Effective permeability Confining pressure Back pressure Reservoir flow
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Bloomfield, P., Williams, A.T.: An empirical liquid permeability-gas permeability correlation for use in aquifer properties studies. Q. J. Eng. Geol. Hydrogeol. 28(Supplement 2), S143–S150 (1995)CrossRefGoogle Scholar
Bruce, W.F., Walsh, J.B., Frangos, W.T.: Permeability of granite under high pressure. J. Geophys. Res. 73(6), 2225–2236 (1978)CrossRefGoogle Scholar
Patsouls, G., Gripps, J.C.: An investigation of the permeability of Yorkshire chalk under differing pore water and confining pressure conditions. Energy Sources 6(4), 321–334 (1982)CrossRefGoogle Scholar
Walsh, J.B.: Effect of pore pressure and confining pressure on fracture permeability. Int J Rock Mech Min Sci Geomech 18(5), 429–435 (1981)CrossRefGoogle Scholar
Choi, C.S., Cheon, D.S., Song, J.J.: Effect of pore and confining pressure on the supercritical CO2 permeability of sandstone: Implications for the effective pressure law. J Geophys Res Solid Earth 122(8), 6231–6246 (2017)CrossRefGoogle Scholar
Caulk, R.A., Ghazanfari, E., Perdrial, J.N., Perdrial, N.: Experimental investigation of fracture aperture and permeability change within enhanced geothermal systems. Geothermics 62, 12–21 (2016)CrossRefGoogle Scholar
Kamali-Asl, A., Ghazanfari, E., Perdrial, N., Bredice, N.: Experimental study of fracture response in granite specimens subjected to hydrothermal conditions relevant for enhanced geothermal systems. Geothermics 72, 205–224 (2018)CrossRefGoogle Scholar