Multiphase flow dynamics during CO2 disposal into saline aquifers

Pruess, Karsten; García, Julio

doi:10.1007/s00254-001-0498-3

Cited by 346 publications

(213 citation statements)

References 31 publications

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“…portant because minor increases in porosity have been shown to generate large increases in permeability (22)(23)(24). The exact relationship between porosity and permeability in carbonate sediment is highly variable (25), and further work is required to quantify whether carbonate dissolution will have a significant effect.…”

Section: Postinjection Chemistry and Sediment Compositionmentioning

confidence: 99%

Permanent carbon dioxide storage in deep-sea sediments

House

Schrag

Harvey

et al. 2006

Proc. Natl. Acad. Sci. U.S.A.

335

219

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Stabilizing the concentration of atmospheric CO 2 may require storing enormous quantities of captured anthropogenic CO 2 in near-permanent geologic reservoirs. Because of the subsurface temperature profile of terrestrial storage sites, CO 2 stored in these reservoirs is buoyant. As a result, a portion of the injected CO 2 can escape if the reservoir is not appropriately sealed. We show that injecting CO 2 into deep-sea sediments <3,000-m water depth and a few hundred meters of sediment provides permanent geologic storage even with large geomechanical perturbations. At the high pressures and low temperatures common in deep-sea sediments, CO 2 resides in its liquid phase and can be denser than the overlying pore fluid, causing the injected CO 2 to be gravitationally stable. Additionally, CO 2 hydrate formation will impede the flow of CO 2 (l) and serve as a second cap on the system. The evolution of the CO 2 plume is described qualitatively from the injection to the formation of CO 2 hydrates and finally to the dilution of the CO 2 (aq) solution by diffusion. If calcareous sediments are chosen, then the dissolution of carbonate host rock by the CO 2 (aq) solution will slightly increase porosity, which may cause large increases in permeability. Karst formation, however, is unlikely because total dissolution is limited to only a few percent of the rock volume. The total CO 2 storage capacity within the 200-mile economic zone of the U.S. coastline is enormous, capable of storing thousands of years of current U.S. CO 2 emissions.

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Section: Postinjection Chemistry and Sediment Compositionmentioning

confidence: 99%

Permanent carbon dioxide storage in deep-sea sediments

House

Schrag

Harvey

et al. 2006

Proc. Natl. Acad. Sci. U.S.A.

335

219

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“…The estimation of solubility trapping capacities requires knowledge of the aqueous phase density as a function of CO2 concentration. Convective transport driven through the aquifer by the difference in density between the nascent brine and the layer saturated with CO2 needs to be modelled accurately if total storage capacity is to be estimated reliably [1]. Furthermore, estimates of residual (or capillary) trapping mechanisms require robust models for interfacial tension (IFT), and standard methods of measuring IFT require knowledge of the difference in the densities of both the CO2-rich and aqueous phases [2; 3].…”

Section: Introductionmentioning

confidence: 99%

Saturated phase densities of (CO 2 + H 2 O) at temperatures from (293 to 450) K and pressures up to 64 MPa

Efika

Hoballah

et al. 2016

The Journal of Chemical Thermodynamics

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An apparatus consisting of an equilibrium cell connected to two vibrating tube densimeters and two syringe pumps was used to measure the saturated phase densities of CO2 + H2O at temperatures from (293 to 450) K and pressures up to 64 MPa, with estimated average standard uncertainties of 1.5 kg·m -3 for the CO2-rich phase and 1.0 kg·m -3 for the aqueous phase. The densimeters were housed in the same thermostat as the equilibrium cell and were calibrated in-situ using pure water, CO2 and helium. Following mixing, samples of each saturated phase were displaced sequentially at constant pressure from the equilibrium cell into the vibrating tube densimeters connected to the top (CO2-rich phase) and bottom (aqueous phase) of the cell. The aqueous phase densities are predicted to within 3 kg·m -3 using empirical models for the phase compositions and partial molar volumes of each . The density of the CO2-rich phase was always within about 8 kg·m -3 of the density for pure CO2 at the same pressure and temperature; the differences were most positive near the critical density, and became negative at temperatures above about 373 K and pressures below about 10 MPa. For this phase, the multi-parameter EOS of Gernert and Span describes the measured densities to within 5 kg·m -3, whereas the computationally-efficient cubic EOS model of Spycher and Pruess [Transport in Porous Media 2010, 82, 173-196], commonly used in simulations of subsurface CO2 sequestration, deviates from the experimental data by a maximum of about 3 kg·m -3.

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“…These relative permeability functions may be different for a fluid that is receding (draining) or advancing (imbibing), and may further depend on the initial saturation level of the fluid. Much research is being done to better understand the three-phase flow behavior of CO 2 -brine systems (e.g., Bachu and Bennion, this issue; Chalbaud et al, 2006;Gallo et al, 2006;Pruess et al, 2004;Pruess and Garcia, 2002;Chang et al, 1994).…”

Section: Multiphase Flow Effectsmentioning

confidence: 99%

A comparative review of hydrologic issues involved in geologic storage of CO2 and injection disposal of liquid waste

2007

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The paper presents a comparison of hydrologic issues and technical approaches used in deep-well injection and disposal of liquid wastes, and those issues and approaches associated with injection and storage of CO 2 in deep brine formations. These There are considerable similarities, as well as significant differences. Scientifically and technically, these two fields can learn much from each other. The discussions presented in this paper should help to focus on the key scientific issues facing deep injection of fluids. A substantial but by no means exhaustive reference list has been provided for further studies into the subject.2

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Multiphase flow dynamics during CO2 disposal into saline aquifers

Cited by 346 publications

References 31 publications

Permanent carbon dioxide storage in deep-sea sediments

Permanent carbon dioxide storage in deep-sea sediments

Saturated phase densities of (CO 2 + H 2 O) at temperatures from (293 to 450) K and pressures up to 64 MPa

A comparative review of hydrologic issues involved in geologic storage of CO2 and injection disposal of liquid waste

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