‎〖CO〗_2 storage in aquifer crack reservoir to reduce ‎environmental pollution: Assessing the effects of aperture ‎and fracture orientation

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.