METHOD FOR WATERED CARBONATE FRACTURED POROUS WATERPROOFED RESERVOIR TREATMENT Russian patent published in 2006 - IPC E21B43/27 

Abstract RU 2270914 C1

FIELD: oil production industry, particularly for water isolation, oil inflow intensification and reservoir recovery increase.

SUBSTANCE: method involves preliminarily saturating highly-watered channels with coagulant, namely 20% calcium chloride solution; injecting buffer fresh water layer; supplying givpan, namely polyacrylonitrile fiber or web waste hydrolyzed in alkali; injecting fresh water and performing hydrochloric acid treatment by injecting mixture of hydrochloric acid and magnesium chloride heated to 85°C into well bottom zone. The magnesium chloride concentration in the mixture is 4.9-11.2%.

EFFECT: increased efficiency of reservoir treatment.

4 tbl

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RU 2 270 914 C1

Authors

Tukhteev Rinat Mukhametovich

Antipin Jurij Viktorovich

Ibraev Rinat Akhmadullovich

Karpov Aleksej Aleksandrovich

Gil'Mutdinov Bulat Raisovich

Dates

2006-02-27Published

2004-08-10Filed