Capillary pressure curves

Capillary pressure curves illustrate how fluids, like water and oil, move through porous materials, such as soil or rock. These curves show the relationship between the pressure difference created by capillary forces and the amount of fluid in the pores. As one fluid invades the space of another, the pressure changes. Understanding these curves helps in fields like hydrology and petroleum engineering, as they predict how easily fluids can flow, which is crucial for managing water resources or extracting oil and gas efficiently.