With the increasing international demand for energy, oil remains an irreplaceable and important fuel source, despite the growing popularity of its cleaner alternatives. Researchers have long been committed to improving exploration and development techniques for enhancing oil and gas recovery. With the recent progress of analytical instruments and tools, the remaining reserves of oil and gas are continuously being further extracted.

A variety of chemistry problems can be encountered during the drilling, well completion, and recovery processes, which require the use of specialized oilfield chemicals to solve. Conventional laboratory characterization and evaluation is no longer limited to beakers and pipettes but is instead increasingly focused on the analysis of fluid flow in porous rocks. These analyses allow for more scientific and objective evaluations of the geochemical problems within the reservoir rocks and help to suggest corresponding chemistry solutions.

The aim of this Special Issue is to invite scholars to share their research on flow chemistry in porous media. Original research and review articles are welcomed.

Potential topics include but are not limited to the following:

• Adsorption, retention, and oil displacement mechanisms of polymer in the formation during polymer flooding
• Polymer-oil-formation rock-water interactions during polymer flooding
• Adsorption, retention, wettability reversal, and oil displacement mechanisms of surfactants in the formation during surfactant flooding
• EOR mechanisms of binary flooding systems in porous media
• Mechanisms of adsorption, emulsification, and oil displacement of alkali in the formation during alkali flooding
• Migration, collapse, regeneration, and oil displacement mechanisms of foam in the formation during foam flooding
• Migration, retention, and oil displacement mechanisms of nanoparticles in the deep formation
• Interaction between CO2, crude oil, formation rock, and water in the formation during CO2 flooding
• Dynamic gelation, chromatographic separation, dehydration, water control, and conformance improvement mechanisms of polymeric gel in the porous rocks
• Application of fluid flow in CO2 geological storage
• Problems such as sand migration, wax precipitation, and asphalt deposition in the oil and gas production process
• Problems such as formation damage caused by working fluids in oil wells (including drilling fluids, fracturing fluids, oil displacement agents, etc.) and pollution prevention
• Development and application of green, efficient, and low-cost oilfield chemicals
• Application of molecular simulation technology in flow chemistry in porous media
• Application of big data and artificial intelligence technology in flow chemistry in porous media