METHOD FOR DEVELOPMENT OF WATER-OIL DEPOSIT Russian patent published in 2000 - IPC

FIELD: oil production industry. SUBSTANCE: method relates to development of integral flooded oil or oil-water deposit. According to method, isolating compound is injected into water-saturated part of deposit. Used in function of isolating compound is compound of high penetration capacity. Screen is created in integral isotropic beds without natural separations. Screen is formed by high-viscous low-permeable composition when isolating compound comes in contact with brine water. Screen takes configuration of cylinder with maximal radius basing on permeability of actual well. Thickness of screen is assumed to be equal to thickness of most homogeneous water-saturated part of bed located directly under oil-saturated part of bed. Screen is fixed by cement slurry so as to retain horizontal filtration of oil and to avoid filtration and vertical transfers and to prevent active hydrodynamic connection between oil-saturated part of bed and water-saturated part of bed and also to prevent creation of flooding cone in providing depression in perforated part. Application of aforesaid method ensures redistribution of filtration flows. EFFECT: higher efficiency. 1 dwg, 1 tbl