The Unscheduled flow between two or more subsurface reservoirs connected or between subsurface reservoir and surface connected to each other through through the wellbore.
Usually two different types of cross-flow is differentiated:
...
The Unscheduled flow between two or more subsurface reservoirs connected or between subsurface reservoir and surface connected to each other through through the wellbore.
Usually two different types of cross-flow is differentiated:
...