![]() ![]() Numerical reservoir simulations were performed for an aquifer and an oil reservoir. Viscosities of 30 wt% formate solutions in the brine were approximately 12 cp at 25 ☌, 5 cp at 50 ☌, and 3 cp at 75 ☌ with Newtonian behavior. ![]() Experimental results showed that the formate solubility in 102,600-ppm NaCl + CaCl2 brine ranged from 30 wt% to 35 wt% between 25 and 75 ☌. ![]() Properties of aqueous formate solutions were measured. This paper presents case studies of using aqueous formate solution as carbon-bearing water for geological carbon storage. In particular, CO2 injection often results in inefficient use of pore space in the formation under geophysical heterogeneities. However, various shortcomings of the conventional CCS are related to the physical properties of CO2, such as low carbon density at low to moderate pressure, low mass density, low viscosity, immiscibility with water, and corrosivity. Carbon capture and storage (CCS) conventionally uses carbon dioxide (CO2) as a carbon carrier. ![]() Carbon storage in geologic formations has been considered an important technology that reduces the carbon intensity of industrial processes based on fossil fuels. ![]()
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