Two laboratory-scale experimental studies were conducted to investigate the sandstone-microbubble interaction. The first study focuses on the migrating process of fluid with microbubbles through the rock pores and fractures. An apparatus has been set up to conduct the hydraulic conductivity test through Berea sandstone sample. The hydraulic conductivity tests were conducted by flowing water and water containing microbubbles through the plate shape sample. The result of the hydraulic conductivity tests showed a difference between water flow and water with microbubbles.

The second study focuses on the microscopic observation to investigate the physical behavior of microbubble movement in water flow and the interaction mechanism between Toyoura sand's grains and the microbubbles. Main component of this experiment is the transparent observation channel made of double acrylic plates. Sand grains were placed between the plates and the fluid was flowed through it. The interaction mechanisms were analyzed based on video recordings and images which need to be confirmed by further experiments.

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