Oilfield Glossary
Oilfield Glossary
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two phase flow

1. n. [Well Testing]
The simultaneous flow of both oil and free gas into a wellbore. This is thought to occur through common pore spaces, where the fluids flow simultaneously. In actuality, the situation is much more complicated, and much two-phase flow occurs in a stratified manner, with lighter fluids flowing primarily through the top of a producing zone and heavier ones flowing through the bottom layers.