Specific type of waterfflood recovery when offtakes are fully compensated by intakes  intakes

Instantaneous Voidage Replacement Balance (IVRB) = Intakes - Offtakes =  

which is equivalent to: 

Instantaneous Voidage Replacement Ratio (IVRR) =  = 1

See also


Petroleum Industry / Upstream /  Production / Field Development Plan / Recovery Methods / Waterflood Recovery (WF)