Artificial facilitated reservoir pressure maintenance.
It includes Waterflood and Gasflood.
The efficiency of artifical reservoir pressure maintenance is defined directly related to Voidage Replacement Ratio (VRR).
See also
Physics / Fluid Dynamics / Percolation / Reservoir flow / Reservoir flow drive mechanisms / Reservoir pressure maintenance
[ Waterflood ] [Gasflood ]
[VRR] [ Cumulative VRR ]