METHOD FOR ISOLATION OF BRINE WATER IN FISSURED BEDS Russian patent published in 1998 - IPC

FIELD: oil production industry. SUBSTANCE: according to method, initially introduced into well which is preliminarily prepared for treatment is insulating material. Used in function of insulating material are known compounds: clay suspension including that with polymer, resilient-elastic compounds from polymers, water glass, petroleum and petroleum products, and others. To prevent transfer of insulating material from fissures into well due to high gradients of pressure in bottom-hole zone of bed, additionally injected into bed after insulating material is suspension of rubber crumb. In process of injection, particles of rubber crumb are compressed and deformed and this makes them penetrating into bed fissures. On completion of injection process, pressure is reduced and rubber crumb particles are clamped in fissures thus creating reliable barrier to prevent insulating material from being carried into well. EFFECT: higher efficiency. 1 tbl