Invaded Zone, Flushed Zone
The invaded or flushed zone is the volume close to the borehole wall in which some or all of the moveable fluids have been displaced by drilling mud filtrate. It consists of the flushed zone and the transition zone.
The invaded or flushed zone is the volume close to the borehole wall in which some or all of the moveable fluids have been displaced by drilling mud filtrate. It consists of the flushed zone and the transition zone.
