The study of relative permeability and residual gas saturation at high pressures and high temperatures

Abstract

This paper presents the results of laboratory investigation conducted with reservoir rock plugs recovered from the Gas reservoir in the North West Shelf of Western Australia. The experiments were conducted in reservoir conditions (High Pressure (HP = 41.37 MPa) and High Temperature (HT = 433.15 K)). The aim of this study was to determine residual gas saturation and quantify the effect of reservoir conditions (HP/HT) on gas-brine relative permeability. The experimental data have been analysed using relative permeability concept. Both wetting and nonwetting phase relative permeability were generated using explicit methods, i.e, Hasslar and Corey model (Power Model). The power model is then used to match experimental data through modifying the parameters of the Corey correlation. Several core plugs were used by this study representing different reservoir quality rocks in the reservoir. The core plugs were in different dimensions, the short core plugs measured around 5 cm in length while the long core plug measured 19.41 cm. The aim of using longer core plugs was to minimise the effect of capillarity and end-effects on the relative permeability measurements. Since permeability measurement under the test conditions depends on pressure drop across the core plugs.

Cited as: Sidiq, H., Amin, R., Kennaird, T. The study of relative permeability and residual gas saturation at high pressures and high temperatures. Advances in Geo-Energy Research, 2017, 1(1): 64-68, doi: 10.26804/ager.2017.01.06

References

Ameafule, J.O., Handy, L.L. The effect of interfacial tensions on relative oil/water permeabilities of consolidated porous media. SPE J. 1982, 22(3): 371-381.

Amin, R., Sidiq, H., Kennaird, T., et al. Gas-gas experimental interfacial tension measurement. Fluid Phase Equilib. 2010, 295(2): 230-236.

Bardon, C., Longeron, D.G. Influence of very low interfacial tensions on relative permeability. SPE J. 1980, 20(5): 391-401.

Bennion, B., Bachu, S. Drainage and imibition relative permeability relationships for supercritical CO2 /Brine and H2S/Brine systems in intergranular sandstone, carbonate, shale and anhydrite rocks. SPE Reserv. Eval. Eng. 2008, 11(3): 487-496.

Boom, W., Wit, K., Schulte, S., et al. Experimental evidence for improved condensate mobility at near-wellbore flow conditions. Paper SPE 30766 Presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, USA, 22-25 October, 1995.

Chen, X., Kianinejad, A., DiCarlo, D.A. An experimental study of CO2 -brine relative permeability in sandstone. Paper SPE 169137 Presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, 12-16 April, 2014.

Henderson, G.D., Danesh, A., Tehrani, D.H., et al. Mea-surement and correlation of gas condensate relative permeability by the steady-state method. SPE Reserv. Eval. Eng. 1996, 1(2): 191-201.

Kerig, P.D., Watson, A.T. A new algorithm for estimating relative permeabilities from displacement experiments. SPE Reserv. Eng. 1987, 2(1): 103-112.

Lee, Y.S., Kim, K.H., Lee, T.H., et al. Analysis of CO2 endpoint relative permeability and injectivity by change in pressure, temperature, and phase in saline aquifer. Energy Sources, Part A 2009, 32: 83-99

Leverett, M.C. Capillary behavior in porous solids. Trans. AIME 1941, 142: 341-358.

Muskat, M., Meres, M.W. The flow of heterogeneous fluids through porous media. Physics 1936, 7: 346-363.

Pope, G.A., Wu, W., Narayanaswamy, G., et al. Modeling relative permeability effects in gas-condensate reservoirs. Paper SPE 49266 Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, USA, 27-30 September, 1998.

Sidiq, H., Amin, R. Mathematical model for calculating the dispersion coefficient of super critical CO2 from the results of laboratory experiments on enhanced gas recovery. J. Nat. Gas Sci. Eng. 2010, 1: 177-182.

Sidiq, H., Amin, R., Van der Steen, E., et al. Super critical CO2 -methane relative permeability investigation. J. Pet. Sci. Eng. 2011, 78: 654-663.

Wyckoff, R.D., Botset, H.G. The flow of gas-liquid mixtures through unconsolidated sand. Physics 1936, 7: 325-345.