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Modeling Reservoir Gas Permeability Tests for Cylindrical and Spherical Geometry

“…Reservoir gas permeability tests are useful testing methods of porous materials, particularly in case of low permeability materials or materials damaged when saturated by liquids (Basheer 1993;Biloe and Mauran 2003;Dinku and Reinhardt 1997;Favre et al 2004;Finsterle and Persoff 1997;Innocentini et al 2000;Ivanov et al 2000;Jannot et al 2008;Lafhaj et al 2007;Wu et al 1998;Wierzbicki 2002;Zeyanaly-Andabily and Rahman 1995). The gas permeability tests are realized in laboratory and field conditions and the advantages of the techniques are related to the fact that the tests rely solely on measurements of pressure in gas reservoirs, without the necessity of measurement velocity of gas flow or pressure distribution in samples.…”

Approximate Solutions for Non-stationary Gas Permeability Tests

“…Non-stationary laboratory and field tests of gas permeability of porous materials belong to the most frequently used experimental techniques, particularly for low permeability materials or materials sensitive to saturation by liquids (Basheer 1993;Biloe and Mauran 2003;Claisse et al 2003;Dinku and Reinhardt 1997;Favre et al 2004;Finsterle and Persoff 1997;Innocentini et al 2000;Ivanov et al 2000;Lafhaj et al 2007;Wu et al 1998;Wierzbicki 2002;Zeyanaly-Andabily and Rahman 1995). Among the main advantages of the application of these testing methods are: (1) The tests rely solely on measurements of pressure evolution in a single or few gas reservoirs, (2) the methods do not require less precise measurement of velocity or discharge as well as difficult measurement of pore pressure inside the samples, (3) the tests can be easily controlled by computerized systems through available sensors monitoring changes in reservoir pressure.…”