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- W2893677413 abstract "As an option to mitigate the increasing level of greenhouse gas emission, a number of Carbon Capture and Storage (CCS) testing and pilot projects have been brought up all over the world. In general, there are three types of CO 2 storage formations, such as deep saline aquifers, depleted oil and gas reservoirs, and un-mineable coal seams. This study is focused on the deep saline aquifer which has the largest potential for CO 2 storage. There are a lot of uncertainties associated with this type of storage, such as storage capacity, geomechanical properties, and sealing behaviour of the caprock. Pressure (and temperature) changes during CO 2 injection and storage can have significant impact on the stress and strain field and may cause relevant geomechanical problems. This paper shows a case study of a synthetic saline aquifer storage site, where a 15-year injection at a rate of 15 MT/year was simulated. Sealing performance and leakage risk were evaluated. A number of sensitivity studies were conducted to analyse the impacts of different rock properties on CO 2 leakage potentials. Coupled flow simulation and geomechanical modeling was performed to monitor stress-strain evolutions and to predict failure potentials in response to pressure changes during CO 2 injection and storage. The findings show that CO 2 leakage is most sensitive to caprock permeability. Other factors such as reservoir properties, boundary conditions, and perforation intervals also have certain degree of influence on the leakage. During the 15-year injection, there is no significant risk of potential failure; however, this may happen in local area due to formation heterogeneity." @default.
- W2893677413 created "2018-10-05" @default.
- W2893677413 creator A5015327348 @default.
- W2893677413 date "2018-01-01" @default.
- W2893677413 modified "2023-10-06" @default.
- W2893677413 title "Coupled Flow Simulation and Geomechanical Modeling on CO<sub>2</sub> Storage in a Saline Aquifer" @default.
- W2893677413 doi "https://doi.org/10.11648/j.earth.20180705.13" @default.
- W2893677413 hasPublicationYear "2018" @default.
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