Two Phase Flow is the simultaneous flow of both oil and gas in a piping system. This is thought to occur through common pore spaces with lighter fluids flowing primarily through the top of a producing zone and heavier ones flowing through the bottom layers. Two-phase flow can occur in various forms. For example, there are transient flows with a transition from pure liquid to a vapour flow as a result of external heating, separated flows and dispersed two-phase flows where one phase is present in the form of particles, droplets, or bubbles in a continuous carrier phase (e.g., gas or liquid).
Related Definitions in the Project: The Process Engineering
