How do fluids move through rocks?

Fluids move through rocks primarily through interconnected pore spaces and fractures. The movement is driven by pressure differences and can occur via processes such as diffusion, advection, and capillarity. The permeability and porosity of the rock significantly influence the rate and direction of fluid flow, with more porous and permeable rocks allowing for easier fluid movement. Additionally, geological structures, such as faults and folds, can create pathways that facilitate or hinder fluid migration.