Reservoir Simulation of CO2 Storage in Aquifers
- Ajitabh Kumar (U. of Texas at Austin) | Myeong H. Noh (U. of Texas at Austin) | Robin C. Ozah (U. of Texas at Austin) | Gary A. Pope (U. of Texas at Austin) | Steven L. Bryant (U. of Texas at Austin) | Kamy Sepehrnoori (U. of Texas at Austin) | Larry W. Lake (U. of Texas at Austin)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- September 2005
- Document Type
- Journal Paper
- 336 - 348
- 2005. Society of Petroleum Engineers
- 5.10.1 CO2 Capture and Sequestration, 1.2.3 Rock properties, 5.2.1 Phase Behavior and PVT Measurements, 2 Well Completion, 5.5 Reservoir Simulation, 5.4 Enhanced Recovery, 5.4.2 Gas Injection Methods, 5.1.1 Exploration, Development, Structural Geology, 5.2.2 Fluid Modeling, Equations of State, 4.3.4 Scale, 5.3.1 Flow in Porous Media, 6.5.3 Waste Management, 4.6 Natural Gas, 5.3.2 Multiphase Flow
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We present the results of compositional reservoir simulation of aprototypical CO2 sequestration project in a deep saline aquifer. The objectivewas to better understand and quantify estimates of the most important CO2storage mechanisms under realistic physical conditions. Simulations of a fewdecades of CO2 injection followed by 103 to 105 years of natural gradient flowwere performed. The impact of several parameters was studied, including averagepermeability, the ratio of vertical to horizontal permeability, residual gassaturation, salinity, temperature, aquifer dip angle, and permeabilityheterogeneity. The storage of CO2 in residual gas emerges as a potentially verysignificant issue meriting further study. Under some circumstances this form ofimmobile storage can be larger than storage in brine and minerals. Mostimportantly, we find that permanent storage is feasible. That is, the storageprocess can be designed to place large volumes of CO2 in forms that will notescape the aquifer any faster than fluids originally present in theaquifer.
Geological Storage.Geological sequestration of CO2 is one of the fewways to remove combustion emissions in sufficient volumes1 to mitigate thegreenhouse effect. Several groups have reported aquifer-scale simulations ofthe storage process, usually in order to estimate the volume that can bestored.1-14 Most schemes that have been put forward depend on storing CO2 inthe supercritical state. In these schemes, buoyancy forces will drive theinjected CO2 upward in the aquifer until a geological seal is reached. Thepermanence of this type of sequestration depends entirely on the integrity ofthe seal over very long periods of time. Assuring such integrity in advance isdifficult, and long-term monitoring for integrity will be costly.
Our study focuses on three modes of CO2 sequestration that avoid thisconcern: 1) pore-level trapping of the CO2-rich gas phase within the geologicformation; 2) dissolution into brine in the aquifer; and 3) precipitation ofdissolved CO2 as a mineral (e.g., calcite). All three modes are well knownphenomena among reservoir engineers and others familiar with flow in permeablemedia. To date, however, little attention has been paid to the practicalimplications of the first mode for storage in aquifers.
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1. Pruess, K. et al.: "Numerical Modeling of AquiferDisposal of CO2," SPEJ (March 2003) 49. doi:10.2118/83695-PA
2. Bachu, S., Gunter, W.D., and Perkins, E.H.: "Aquifer Disposal of CO2:Hydrodynamic and Mineral Trapping," Energy Conversion and Management (1994)35, 269. doi:10.1016/0196-8904(94)90060-4
3. Doughty, C. and Pruess, K.: "Modeling Supercritical CO2 Injection inHeterogeneous Porous Media," paper presented at the 2003 TOUGH Symposium,Berkeley, California, 12-14 May.
4. Gunter, W.D., Wiwchar, B., and Perkins, E.H.: "Aquifer Disposal of CO2-richGreenhouse Gases: Extension of the Time Scale of Experiment forCO2-Sequestering Reactions by Geochemical Modeling," Mineralogy andPetrology (1997) 59, 121. doi:10.1007/BF01163065
5. Hovorka, S.D. et al.: "Project evaluation: Phase II: Optimal geologicalenvironments for carbon dioxide disposal in brine-bearing formations (aquifers)in the United States," U. of Texas at Austin, Bureau of Economic Geology, FinalReport prepared for the U.S. Dept. of Energy, NETL contract No.DE-AC26-98FT40417, 2000.
6. House, N.J. et al.: "Simulation Study of CO2 Sequestrationin a North Sea Formation," paper SPE 81202 presented at the 2003SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio,Texas, 10-12 March. doi:10.2118/81202-MS
7. Ennis-King, J. and Paterson, L.: "Role of Convective Mixing in theLong-Term Storage of Carbon Dioxide in Deep Saline Formations," SPEJ(September 2005). doi:10.2118/84344-PA
8. Nghiem, L.: Compositional Simulator for Carbon Dioxide Sequestration,Computer Modeling Group Ltd. (2002).
9. Pasala, S.M. et al.: "Simulating the Impact of Faults onCO2 Sequestration and Enhanced Oil Recovery in Sandstone Aquifers," paperSPE 84186 presented at the 2003 SPE Annual Technical Conference and Exhibition,Denver, 5-8 October. doi:10.2118/84186-MS
10. Pruess, K. et al.: "Code Intercomparison Builds Confidence in NumericalModels for Geologic Disposal of CO2," http://www-esd.lbl.gov/GEOSEQ/index.html.
11. Seo, J.G. and Mamora, D.D.: "Experimental and Simulation Studiesof Sequestration of Supercritical Carbon Dioxide in Depleted GasReservoirs," paper SPE 81200 presented at the 2003 SPE/EPA/DOE Explorationand Production Environmental Conference, San Antonio, Texas, 10-12 March.doi:10.2118/81200-MS
12. Xu, T., Apps, J.A., and Pruess, K.: "Analysis of Mineral Trapping forCO2 Disposal in Deep Aquifers," Lawrence Berkeley Natl. Lab. Rep. LBNL-46992,Berkeley, California (2001).
13. Vikas: "Simulation of CO2 Sequestration," MS thesis, U. of Texas atAustin, Austin, Texas (2002).
14. Wellman, T.P. et al.: "Evaluation of CO2-Brine-ReservoirRock Interaction With Laboratory Flow Tests and Reactive TransportModeling," paper SPE 80228 presented at the 2003 SPE InternationalSymposium on Oilfield Chemistry, Houston, 5-7 February 2003.doi:10.2118/80228-MS
15. Rumpf, B. et al.: "Solubility of Carbon Dioxide inAqueous Solutions of Sodium Chloride: Experimental Results andCorrelation," Journal of Solution Chemistry (1994) 23, No. 3, 431.doi:10.1007/BF00973113
16. Scharlin, P.: Carbon Dioxide in Water and Aqueous Electrolyte Solutions,Vol. 62 of Solubility Data Series. Oxford U. Press, Intl. Union of Pure andApplied Chemistry, Oxford, U.K. (1996).
17. Spycher, N., Pruess, K., and Ennis-King, J.: "CO2-H2O Mixtures in theGeological Sequestration of CO2. I. Assessment and Calculation of MutualSolubilities From 12 to 100 °C and up to 600 bar," Lawrence Berkeley NationalLaboratory, report LBNL-50991, Berkeley, California (July 2002).
18. Teng, H. and Yamasaki, A.: "Solubility of Liquid CO2 inSynthetic Sea Water at Temperatures from 278 K to 293 K and Pressures From 6.44MPa to 29.49 MPa, and Densities of the Corresponding Aqueous Solutions,"Journal of Chemical & Engineering Data (1998) 43, 2.
19. Teng, H. et al.: "Solubility of Liquid CO2 in Water at Temperatures From278 K to 293 K and Pressures From 6.44 MPa to 29.49 MPa and Densities of theCorresponding Aqueous Solutions," Journal of Chemical & Engineering Data(1997) 29, 1301.
20. Wagner, W. and Pruss, A.: "The IAPWS Formulation 1995 for theThermodynamic Properties of Ordinary Water Substance for General and ScientificUse," J. Phys. Chem. Ref. Data (2002) 31, No. 2, 387.doi:10.1063/1.1461829
21. Simonson, J.M., Oakes, C.S., and Bodnar, R.J.: "Densities of NaCl(aq) to theTemperature 523 K at Pressures to 40 MPa Measured With a New Vibrating-tubeDensitometer," Journal of Chemical Thermodynamics (1994) 26, 345.doi:10.1006/jcht.1994.1044
22. Parkinson, W. and Nevers, N.D.: "Partial Molal Volume of Carbon Dioxidein Water Solutions," Industrial and Engineering Chemistry Fundamentals (1969)8, No. 4, 709.
23. Hnedkovský, L., Wood, R.H., and Majer, V.: "Volumes of Aqueous Solutions ofCH4, CO2, H2S and NH3 at Temperatures From 298.15 K to 705 K and Pressures to35 Mpa," Journal of Chemical Thermodynamics (1996) 28, 125.doi:10.1006/jcht.1996.0011
24. Li, Y.K. and Nghiem, L.X.: "Phase Equilibria of Oil, Gas and Water/BrineMixtures from a Cubic Equation of State and Henry's Law," Can. J. Chem. Eng.(1986) 64, 486.
25. Firoozabadi, A. et al.: "EOS Predictions of Compressibilityand Phase Behavior in Systems Containing Water, Hydrocarbons, and CO2,"SPERE (May 1988) 673. doi:10.2118/15674-PA
26. Garcia, J.E.: "Density of Aqueous Solutions of CO2," Lawrence BerkeleyNatl. Laboratory, report LBNL-49023, Berkeley, California (October 2001).
27. Grigull, U., Straub, J., and Schiebener, P.: Steam Tables in SI-Units,third edition, Springer-Verlag (1990).
28. Zaytsev, I.D., and Aseyev, G.G.: "Properties of Aqueous Solutions ofElectrolytes," CRC Press (1992).
29. Holtz, H.M.: "Residual GasSaturation to Aquifer Influx: A Calculation Method for 3D Computer ReservoirModel Construction," paper SPE 75502 presented at the 2002 SPE GasTechnology Symposium, 30 April-2 May. doi:10.2118/75502-PA