A simulation study on CO2 sequestration in saline aquifers: trapping mechanisms and risk of CO2 leakage

Jalal Foroozesh*, Monychol Adhil Dier, Mohamed Gamal Rezk

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Carbon dioxide (CO2) is one of the main greenhouse gases that its high concentration in the atmosphere has caused the global warming issue. Sequestering CO2 in a suitable geological subsurface formation can be a feasible method to reduce the CO2 concentration in the atmosphere. CO2 sequestration in saline aquifers can store a significant volume of CO2 underground for thousand years. However, injecting CO2 into such formations does not guarantee a safe storage because CO2 could leak back to surface or contaminate the formation water. Hence, a proper evaluation of the sequestration site is required. In this study, a case study regarding CO2 sequestration in saline aquifers was conducted using CMG-GEM compositional simulator to study the effects of aquifer permeability, injection pressure and well trajectory on CO2 trapping mechanisms during sequestration process. A field-scale model with one injector well in which CO2 was injected into the aquifer for ten years and simulated for hundred years was studied. The results showed that, CO2 solubility trapping is the dominant mechanism with less risk of leakage when the aquifer has a good vertical permeability and the injection pressure is not high regardless of the well trajectory.

Original languageEnglish
Title of host publicationMATEC Web of Conferences: UTP-UMP-VIT Symposium on Energy Systems 2018 (SES 2018)
PublisherEDP Sciences
Number of pages6
Volume225
DOIs
Publication statusPublished - 5 Nov 2018
Event2018 UTP-UMP-VIT Symposium on Energy Systems - Tamil Nadu, India
Duration: 18 Sep 201819 Sep 2018

Publication series

NameMATEC Web of Conferences
PublisherEDP Sciences
ISSN (Print)2261-236X

Conference

Conference2018 UTP-UMP-VIT Symposium on Energy Systems
Abbreviated titleSES 2018
Country/TerritoryIndia
CityTamil Nadu
Period18/09/1819/09/18

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