〖CO〗_2 storage in aquifer crack reservoir to reduce environmental pollution: Assessing the effects of aperture and fracture orientation
Subject Areas :Ehsan Mosavi 1 , Parniya Zafari 2 , mehran Gholinejad 3
1 - Assistant Professor, Islamic Azad University, South Tehran Branch, Department of Petroleum and Mining Engineering, Tehran, Iran
2 - Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Tabriz, Iran
3 - Research Center for Modeling and Optimization in Science and Engineering, South Tehran Branch, Islamic
Azad University, Tehran, Iran
Keywords: Environmental, COMSOL, CO_(2 ) storage, aquifer crack reservoir, convective mixing,
Abstract :
Continuous need for fossil fuels as a source of energy around the world and gradual velocity of renewable energy development, increasing greenhouse gases, including in the atmosphere. For this purpose, strategies to counter global warming and environmental change are important. Over the last two decades, technology developments of capture and storage in underground formations has been considered aquifer reservoirs are a good method to storage because of high potential. By dissolution of supercritical in aquifer reservoir due to salinity, pressure and temperature, brine density increased from 0.1 to 1 percent and it causes the emergence of instability and fingering in the environmental flow system and convectional mixing phenomenon. In this article, focusing on effect of aperture and fracture orientation parameters on storage in aquifer reservoir, two_dimensional simulation has been investigated by COMSOL multiphysics 4.3 software. Improving storage over a 40 years period is significant as the fracture aperture increases. Also, by reducing fracture orientation relative to vertical, fingerings will advance into aquifer and increase storage safety.
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