1 / 2023-04-12 14:11:24

ANALYSIS OF CO2 STORAGE CAPACITY IN SALINE AQUIFER USING RESERVOIR SIMULATION APPROACH

Carbon Capture and Storage (CCS),Trapping Mechanisms,Spill paths,Carbon dioxide Injection

Sequestration has been proposed as one of the best way to reduce atmospheric emissions and keep it underground for long periods. These types of Carbon dioxide emissions have been increasing in recent decades due to the use of fossil fuels in power generation and other industrial processes such as refineries, cement plants and steel production. In this process, each power plant emits millions of tons of carbon dioxide per year. Such reservoirs have not been studied deeply, so more research is being conducted to better understand the geological conditions of saturated water sandstone formations and the shale present above these formations as a flow barrier. 

The aim is to investigate relative impacts of geologic structures, water characteristics, reservoir flow properties, seal formation characteristics and to identify reasonable injectivity goals in the project. A workflow of the area of interest been created using the CO₂-lab module of MRST. MRST is used to model the injection of CO₂ into the aquifer formations, and gas trapping due to residual gas saturation, Structural and Stratigraphic trapping. A workflow of the area of interest been created using the CO₂-lab module of MRST. MRST is used to model the injection of CO₂ into the aquifer formations, and gas trapping due to residual gas saturation, solubility of CO₂ into brine and chemical reactions between minerals in the water, rock and CO₂. From modeling and simulation of ZH8NG field from China, the total amount of CO₂ storage capacity is 160 mega tones, where much amount of are present as a free plume and residual in plume. This study will assist to estimate the storage capacity for capturing carbon dioxide.