Hydrodynamic Methods of Extraction of Immobile Hydrocarbon Liquids in Inhomogeneous Capillaries

Abstract

A new technological solution to improve the process of oil displacement by water flood can be done by increasing the hydrodynamic pressure periodically. The proposed technology allows us to overcome the resistance of capillary forces and to widen the injection zone. The filtration experiments were conducted under conditions corresponding to the reservoir through a composite rock sample of cylindrical shape which is made from natural reservoir core deposits of Western Siberia. The proposed technique also allows to estimate the pressure distribution along the propagation of the formation on discrete areas of the reservoir as the displacement front moves, and so, the time frame of the hydrodynamic pressure drop changes. It also allows to be determining the duration and phasing of pressure control in order to achieve the expected hydrodynamic effect and consequently, increase the flow of oil to the producing wells.