Pore-Space Alteration Induced by Brine Acidification in Subsurface Geologic Formations
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Capacity Investigation of Brine-Bearing Sands of the Frio Formation for Geologic Sequestration of CO2
The capacity of fluvial brine-bearing formations to sequester CO2 is investigated using numerical simulations of CO2 injection and storage. Capacity is defined as the volume fraction of the subsurface available for CO2 storage and is conceptualized as a product of factors that account for two-phase flow and transport processes, formation geometry, formation heterogeneity, and formation porosity...
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Injecting and storing of carbon dioxide (CO2) in deep geologic formations is considered as one of the promising approaches for geologic carbon storage. Microbial wettability alteration of injected CO2 is expected to occur naturally by microorganisms indigenous to the geologic formation or microorganisms intentionally introduced to increase CO2 storage capacity in the target reservoirs. The ques...
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Geologic CO2 storage has been identified as a key to avoiding dangerous climate change. Storage in oil reservoirs dominates the portfolio of existing projects due to favorable economics. However, in an earlier related work ( Al-Menhali and Krevor Environ. Sci. Technol. 2016 , 50 , 2727 - 2734 ) , it was identified that an important trapping mechanism, residual trapping, is weakened in rocks wit...
متن کاملGeologic carbon storage is unlikely to trigger large earthquakes and reactivate faults through which CO2 could leak.
Zoback and Gorelick [(2012) Proc Natl Acad Sci USA 109(26):10164-10168] have claimed that geologic carbon storage in deep saline formations is very likely to trigger large induced seismicity, which may damage the caprock and ruin the objective of keeping CO2 stored deep underground. We argue that felt induced earthquakes due to geologic CO2 storage are unlikely because (i) sedimentary formation...
متن کاملEvaluation of Brine-Bearing Sands of the Frio Formation, Upper Texas Gulf Coast for Geological Sequestration of CO2
Introduction In order to significantly impact increases in atmospheric concentrations of CO 2 , an alternative to releasing very large volumes of this gas must be found. Average releases at U.S. power plants are 2.7 million metric tons of CO 2 per year, with large plants releasing more than 18 million metric tons. One attractive option for reducing these emissions is to inject the CO 2 into unu...
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تاریخ انتشار 2015