Research Progress on CO2 Capture, Utilization, and Storage (CCUS) Based on Micro-Nano Fluidics Technology

Abstract

The research and application of CO2 storage and enhanced oil recovery (EOR) have gradually emerged in China. However, the vast unconventional oil and gas resources are stored in reservoir pores ranging from several nanometers to several hundred micrometers in size. Additionally, CO2 geological sequestration involves the migration of fluids in tight caprock and target layers, which directly alters the transport and phase behavior of reservoir fluids at different scales. Micro- and nanoscale fluidics technology, with their advantages of in situ visualization, high temperature and pressure resistance, and rapid response, have become a new technical approach to investigate gas–liquid interactions in confined domains and an effective supplement to traditional core displacement experiments. The research progress of micro–nano fluidics visualization technology in various aspects, such as CO2 capture, utilization, and storage, is summarized in this paper, and the future development trends and research directions of micro–nano fluidics technology in the field of carbon capture, utilization, and storage (CCUS) are predicted.

Simulations of CO2 Dissolution in Porous Media Using the Volume-of-Fluid Method

“…Interfacial mass transfer across fluid-fluid interfaces in porous media is a special branch of the generalized multi-phase flow. Significant work has been conducted in the past, especially in the field of enhanced hydrocarbon recovery, geological carbon sequestration, geothermal energy production, seasonal storage of natural gas in geologic formations, nuclear waste management, and gas hydrate formation in sediments [6][7][8][9][10][11][12][13][14]. This wide range of applications has spurred considerable efforts in the modeling of interfacial mass transfer [15][16][17][18][19].…”