Abstract
During CO2 injection in deep saline aquifers, salt precipitation happens around the injection well because of capillary driven back flow, inducing permeability impairment. The permeability impairment affects CO2 injectivity and migration. Different values of three characteristic parameters for capillary pressure function (air entry pressure, empirical parameter m and liquid residual saturation) as well as input absolute value of maximum capillary are chosen in numerical simulation to figure out their effects on salt precipitation. Verma & Pruess model is then used for quantifying permeability impairment. Results show that permeability decreases with higher air entry pressure, larger liquid residual saturation, and especially smaller value of empirical parameter m. To enhance CO2 injectivity and avoid blocking of CO2 migration, a homogenous formation with large pore size should be chosen before CO2 injection into deep saline aquifer.
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PACALA S, SOCOLOW R. Stabilization wedges: Solving the climate problem for the next 50 years with current technologies [J]. Science, 2004, 305: 968–972.
OLDENBURG C M, STEVENS S H, BENSON S M. Economic feasibility of carbon sequestration with enhanced gas recovery (CSEGR) [J]. Energy, 2004, 29(9/10): 1413–1422.
DOUGHTY C, FREIFELD M B, TRAUTZ C R. Site characterization for CO2 geologic storage and vice versa: The frio brine pilot, texas, USA as a case study [J]. Environmental Geology, 2008, 54(8): 1635–1656.
SHEN Ping-ping, LIAO Xin-wei. The technology of carbon dioxide stored in geological media and enhanced oil recovery [M]. Beijing: Petroleum Industry Press, 2009: 43–62. (in Chinese)
de SILVA P N K, RANJITH P G. Advanced core flooding apparatus to estimate permeability and storage dynamics of CO2 in large coal specimens [J]. Fuel, 2013, 104: 417–425.
MULLER N, QI R, MACKIE E, PRUESS K, BLUNT M J. CO2 injection impairment due to halite precipitation [J]. Energy Procedia, 2009, 1(1): 3507–3514.
YU Bo, LUO Xiao-ming, QIAO Xiang-yang, ZHU Qing, WANG Fei-fei, ZHOU Kang, YANG Jiao. Influential factor and charactristics of Shan-2 Member of Shanxi formation in Yanchang Oil-Gas field, Ordos basin [J]. Journal of Central South University: Science and Technology, 2012, 43(1): 3931–3937. (in Chinese)
SADHUKHAN S, GOUZE P, DUTTA T. Porosity and permeability changes in sedimentary rocks induced by injection of reactive fluid: A simulation model [J]. Journal of Hydrology, 2012, 450/451: 134–139.
HURTER S, LABREGERE D, BERGE J. Simulations for CO2 injection projects with compositional simulator[C]// SPE Aberdeen. Scotland: Society of Petroleum Engineers, 2007: 1–7.
LUQUOT L, GOUZE P. Experimental determination of porosity and permeability changes induced by injection of CO2 into carbonate rocks [J]. Chemical Geology, 2009, 265(1/2): 148–159.
PINI R, KREVOR C M S, BENSON M S. Capillary pressure and heterogeneity for the CO2/water system in sandstone rocks at reservoir conditions [J]. Advances in Water Resources, 2012, 38: 48–59.
VERMA A, PRUESS K. Thermohydrologic conditions and silica redistribution near high-level nuclear wastes emplaced in saturated geological formations [J]. Journal of Geophysical Research, 1988, 93(B2): 1159–1173.
GIORGIS T, CARPITA M, BATTISTELLI A. 2D modeling of salt precipitation during the injection of dry CO2 in a depleted gas reservoir [J]. Energy Conversion and Management, 2007, 48(6): 1816–1826.
LIU Hui-hai, ZHANG Guo-xiang, YI Zhen-lian, WANG Ying-xue. A permeability-change relationship in the dryout zone for CO2 injection into saline aquifers [J]. International Journal of Greenhouse Gas Control, 2013, 15: 42–47.
PRUESS K, MULLER N. Formation dry-out from CO2 injection into saline aquifers: Part 1. Effects of solids precipitation and their mitigation [J]. Water Resources Research, 2009, 45(3): 1–11.
van GENUCHTEN M T. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils [J]. Soil Science Society of America Journal, 1980, 44(5): 892–898.
PRUESS K. ECO2N: A TOUGH2 fluid property module for mixtures of water, NaCl, and CO2 [D]. Berkeley, USA: Lawrence Berkeley National Laboratory, University of California, 2005.
PRUESS K, OLDENBURG C, MORIDIS G. TOUGH2 user’s guide, version 2.0 [M]. USA: Lawrence Berkeley National Laboratory, 1999.
PRUESS K. The TOUGH codes-A family of simulation tools for multiphase flow and transport processes in permeable media [J]. Vadose Zone Journal, 2004, 3(3): 738–746.
BROOKS R H, COREY A T. Hydraulic properties of porous media [M]. USA: Colorado State University, 1964.
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Foundation item: Project(51179060) supported by the National Natural Science Foundation of China; Project(20110094130002) supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China
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Wang, Y., Liu, Y. Impact of capillary pressure on permeability impairment during CO2 injection into deep saline aquifers. J. Cent. South Univ. 20, 2293–2298 (2013). https://doi.org/10.1007/s11771-013-1736-z
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DOI: https://doi.org/10.1007/s11771-013-1736-z