The efficiency of oil reserve recovery in a reservoir of uniform permeability when changing the operating mode of development well

Abstract

Today, the development of viscous and high-viscosity oil reservoirs widely uses forced fluid extraction as a method of increasing oil recovery. However, practice shows that not all wells respond positively to fluid boosting, i.e. the effect of fluid boosting is not clear-cut. Based on model calculations, the article investigates the conditions for effective use of forced fluid withdrawal (FFW). It reveals that increasing the fluid flow rate of a production well can only serve as an intensification method when developing dual permeability reservoirs in the Newtonian model of oil flow; when developing oil reservoirs with structural and mechanical properties, FFW can increase initial recoverable reserves; the use of FFW in the development of a uniform highly permeable pore reservoir, despite the formal effect (increase in oil flow rate) in the long term leads to deterioration of oil displacement quality (increase in the water proportion per the same produced fluid volume) and as a result - to reduction in the amount of drained recoverable oil reserves.