FIELD: oil production industry. SUBSTANCE: this relates to isolation of water-saturated intervals of oil bed and also to isolation of absorbing beds in process of drilling bore-holes at presence in beds of low-mineralized brine water. According to method, injected into bed is solution of sodium polysilicate and gel-creating agent. Used as sodium polysilicate is sodium polysilicate with silicate modulus of 4.2-6.5 in concentration of 1-10 mass%. In function of gel-creating agent usable is sulphamic acid or muriatic acid or calcium chloride. Application of aforesaid method simplifies isolation procedure and increases oil bed treating efficiency. EFFECT: higher overall efficiency. 1 cl, 1 tbl
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Authors
Dates
1998-12-27—Published
1997-06-05—Filed