METHOD FOR CONTROL OF FILTRATION FLOWS CREATED AT DEVELOPMENT OF OIL DEPOSITS WITH STRATIFIED-NONUNIFORM BEDS Russian patent published in 1997 - IPC

FIELD: oil production industry. SUBSTANCE: method implies determination of permeability and capacity of each interlayer, viscosity of substituting agent and substituted liquid, initial and final saturation with substituting agent, and calculation of modified functions of relative phase permeabilities of substituting agent and substituted liquid with subsequent determination of pressure fields of filtration flows and filtration speeds. Schemes of current saturation with substituting agent are drawn according to additionally determined technological information about operation of each well. Basing on thus produced schemes, mathematically simulated is process of filtration in stratified-nonuniform oil bed. Determined for additional information is current content of substituting agent in output of each well in area being investigated. Using these data and modified functions of relative phase permeabilities of substituting agent and substituted liquid calculated for each well, estimated is average value through cross section of multilayer porous medium of saturation with substituting agent around each well, or values of saturation with substituting agent for each well to certain date. EFFECT: high efficiency. 1 cl, 2 tbl, 2 dwg