FIELD: oil and gas production.
SUBSTANCE: procedure for isolation of water and intensification of oil intake in carbonate reservoirs consists in successive pumping 3-10% solution of alumina-chloride and 20-27% of water solution of alumina-chloride and cement suspension; 3-10% solution of alumina chloride is used in 0.01-0.05% water solution of poly-acryl-amide. Before pumping 20-27% water solution of alumina-chloride in terms of not less, than 2-4 m3 per metre of thickness of treated reservoir, there is pumped 10% solution of hydrolysed poly-acrylonitrile.
EFFECT: increased efficiency of isolating water in carbonate reservoirs due to increased stability and strength of gel at simultaneous duration of isolating effect and intensified oil intake.
11 ex, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF WATER INFLOW LIMITATION IN FRACTURED CARBONE RESERVOIRS | 2015 |
|
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| METHOD OF REPAIR-INSULATION WORKS IN WELL (VERSIONS) | 2015 |
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| METHOD OF TREATMENT OF BOTTOMHOLE FORMATION ZONE | 2014 |
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| METHOD OF WATER ISOLATION IN CARBONATE AND CARBONIZED FORMATIONS | 0 |
|
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| METHOD OF WATER INFLOW LIMITATION IN FLOODED CARBONE RESERVOIRS | 2016 |
|
RU2619778C1 |
| WATER INFLOW SHUTOFF METHOD IN FRACTURED CARBONATE RESERVOIRS | 2014 |
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| ISOLATION METHOD OF WELL TROUBLESOME ZONE WITH CARBONATE BASINS | 2012 |
|
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| METHOD FOR SELECTIVE ISOLATION OF HIGH-PERMEABLE INTERVALS IN WELL | 1996 |
|
RU2075590C1 |
| METHOD OF ISOLATING WATER INFLOW INTO OPERATING WELL | 0 |
|
SU1421849A1 |
| METHOD FOR RESTRICTING THE WATER SUPPLY TO THE OIL-WELLING WELL THAT IS EQUIPPED WITH THE DEPTH INSERTED BY THE ROD WELL PUMP | 2016 |
|
RU2646153C1 |
