Self-trapping mechanisms of carbon dioxide in the aquifer disposal

Koide, Hitoshi; Takahashi, Manabu; Tsukamoto, Hitoshi; Shindo, Yuji

doi:10.1016/0196-8904(95)00054-h

Cited by 80 publications

(34 citation statements)

References 3 publications

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“…CO 2 (l) injected below the NBZ is buoyant at the point of injection and will rise until it reaches the bottom of the HFZ. As the CO 2 (l) flows into the HFZ, it will form CO 2 hydrates, which will clog the pore space and form a cap that limits the upward migration of the remaining CO 2 (l) (29). If the hydrate cap does not form an impermeable seal, then some CO 2 (l) may flow within the HFZ to the bottom of the NBZ.…”

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.

353

228

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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.

353

228

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“…For successful CO 2 sequestration in heterogeneous subsurface formations, the practicability of the CO 2 sequestration process based on storage capacity and leakage prevention should be guaranteed before the field scale CO 2 injection. The previous research over the last two decades revealed that the injection of supercritical CO 2 (scCO 2 ) into a reservoir rock initiates a geochemical reaction in the scCO 2 -rock-groundwater system, but it does not threaten the storage safety of CO 2 reservoir formations because of its long reaction time [18][19][20]. However, in the past five years, several studies have cast doubts on whether the rate of the scCO 2 -rock-groundwater reaction is too slow to affect the change of CO 2 storage capacity and leakage safety after scCO 2 injection [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

et al. 2017

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Changes in the physical properties of the supercritical CO 2 (scCO 2 ) reservoir rock is one of the most important factors in controlling the storage safety at a scCO 2 sequestration site. According to recent studies, it is probable that geochemical reactions influence changes in the rock properties after a CO 2 injection in the subsurface, but quantitative data that reveal the interrelationship of the factors involved and the parameters needed to evaluate the extent of scCO 2 -rock-groundwater reactions have not yet been presented. In this study, the potential for employing the surface roughness value (SR RMS ) to quantify the extent of the scCO 2 involved reaction was evaluated by lab-scale experiments. For a total of 150 days of a simulation of the scCO 2 -sandstone-groundwater reaction at 100 bar and 50 • C, the trends in changes in the physical rock properties, pH change, and cation concentration change followed similar logarithmic patterns that were significantly correlated with the logarithmic increase in the SR RMS value. These findings suggest that changes in surface roughness can quantify the extent of the geochemical weathering process and can be used to evaluate leakage safety due to the progressive changes in rock properties at scCO 2 storage sites.

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“…[2] Field observations suggest that gas transport through water-filled soft sediment is an essential component of seafloor dynamics, which controls natural gas seeps and vent sites [Heeschen et al, 2003;Best et al, 2006], the mechanical and acoustic properties of submarine sediments [Anderson and Hampton, 1980;Waite et al, 2008], the creation of pockmarks in the ocean floor [Hovland et al, 2002] and the viability of carbon dioxide sequestration in the sub-seafloor, either by hydrate formation [Koide et al, 1995] or gravitational trapping [Koide et al, 1997].…”

Section: Introductionmentioning

confidence: 99%

X-ray computed-tomography imaging of gas migration in water-saturated sediments: From capillary invasion to conduit opening

Choi

Seol

Boswell

et al. 2011

Geophys. Res. Lett.

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The strong coupling between multiphase flow and sediment mechanics determines the spatial distribution and migration dynamics of gas percolating through liquid‐filled soft granular media. Here, we investigate, by means of controlled experiments and computed tomography (CT) imaging, the preferential mode of gas migration in three‐dimensional samples of water‐saturated silica‐sand and silica‐silt sediments. Our experimental system allowed us to independently control radial and axial confining stresses and pore pressure while performing continuous x‐ray CT scanning. The CT image analysis of the three‐dimensional gas migration provides the first experimental confirmation that capillary invasion preferentially occurs in coarse‐grained sediments whereas grain displacement and conduit openings are dominant in fine‐grained sediments. Our findings allow us to rationalize prior field observations and pore‐scale modeling results, and provide critical experimental evidence to explain the means by which conduits for the transit of methane gas may be established through the gas hydrate stability zone in oceanic sediments, and cause large episodic releases of carbon into the deep ocean.

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Self-trapping mechanisms of carbon dioxide in the aquifer disposal

Cited by 80 publications

References 3 publications

Permanent carbon dioxide storage in deep-sea sediments

Permanent carbon dioxide storage in deep-sea sediments

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

X-ray computed-tomography imaging of gas migration in water-saturated sediments: From capillary invasion to conduit opening

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