Abstract
This work aims to study the structural and residual trapping mechanisms on the Deccan traps topography to elucidate the possible implementation of CO2 geological sequestration. This study provides an insight into a selection of stairsteps landscape from Deccan traps in the Saurashtra region, Gujarat, India. Various parameters affect the efficiency of the structural and residual trapping mechanisms. Thus, the parametric study is conducted on the modeled synthetic geological domain by considering the suitable injection points for varying injection rates and petrophysical properties. The outcomes of this study will provide insights into the dependencies of structural and residual trapping on the Deccan traps surface topography and injection rates. It can also establish a protocol for selecting the optimal injection points with the desired injection rate for the safe and efficient implementation of CO2 sequestration. The simulation results of this study have shown the dependencies of structural and residual trapping on the geological domain parameters.
Highlights
According to the International Energy Agency (IEA), the atmospheric CO2 concentration has reached an alarming level of 410 ppm, in which the energy-related CO2 emissions rose to a historic high [1]. e increase in the CO2 concentration has led to a rise in the average temperature on the Earth’s surface, resulting in deleterious phenomena like the melting of ice caps in polar regions, thereby creating ecological imbalance
For the first time, a stairsteps kind of structure is considered to conduct a simulation analysis to study the influences of the topography of Deccan traps located in the Saurashtra region, India [19]. is numerical study will provide insight into selecting the injection point and injection rate at the safe range of petrophysical properties to safely implement CO2 sequestration in the Deccan volcanic province
E geological domain consists of a different range of perturbation cognates, with a peak characteristically referred to as an anticline dome in geology. e fate of CO2 due to structural and residual trapping in the geological domain is thoroughly analyzed and illustrated in Figure 3, which consists of two congener results. e first column represents the CO2 saturation in the transparent 3D domain, which can analyze the spreading and displacement of CO2 in the geological domain. e second column illustrates the saturated CO2 height in the domain
Summary
According to the International Energy Agency (IEA), the atmospheric CO2 concentration has reached an alarming level of 410 ppm, in which the energy-related CO2 emissions rose to a historic high [1]. e increase in the CO2 concentration has led to a rise in the average temperature on the Earth’s surface, resulting in deleterious phenomena like the melting of ice caps in polar regions, thereby creating ecological imbalance. Erefore, this article aims to enhance the understanding of the structural and residual trapping mechanisms for CO2 sequestration in the Deccan volcanic formation domain. It was observed that the dissolution of CO2 was less in the highly tilted formation domain due to the uncertainty in residual trapping in the lower formation layers [54] In this current research, for the first time, a stairsteps kind of structure is considered to conduct a simulation analysis to study the influences of the topography of Deccan traps located in the Saurashtra region, India [19]. By illustrating the lateral movement of the injected CO2 in the sizeable geological domain, it has provided an intuition on the influences of Deccan traps topography and geological parameters on the entrapment percentage of structural and residual trapping mechanism in geological time scale
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