FIELD: oil production, particularly to develop oil field by flooding thereof by selective isolation of flushed production bed zones.
SUBSTANCE: method for oil production by flooding thereof involves injecting gelling plug based on sodium silicate, namely liquid glass, ammonium nitrate, surfactant and fresh water. Above components are taken in the following amounts (% by weight): sodium silicate - liquid glass - 10.0-50.0, ammonium nitrate - 5.0-10.0, surfactant - 1.0-10.0, remainder - fresh water. For oil fields characterized by high mineral content in oil-field water fresh water is supplied in injection well after gelling plug injection, wherein volume of fresh water to be injected is equal to gelling plug volume.
EFFECT: increased oil recovery factor of productive oil bed to be flooded having non-uniform permeability with the use of gelling plug by increased depth of penetration thereof.
2 cl, 2 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| RESERVOIR OIL RECOVERY ENHANCEMENT METHOD | 2001 |
|
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| METHOD OF OIL PRODUCTION | 2001 |
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| METHOD OF DEVELOPING OIL DEPOSIT | 1999 |
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| METHOD OF DEVELOPMENT OF HIGH-VISCOSITY AND HEAVY OIL DEPOSITS | 1998 |
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| METHOD OF DEVELOPMENT OF OIL DEPOSIT | 2016 |
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| METHOD FOR EXTRACTION OF NON-HOMOGENOUS WATER-CLOGGED OIL BED | 2004 |
|
RU2255213C1 |
| METHOD FOR DEVELOPMENT OF OIL DEPOSIT BY FLOODING | 1996 |
|
RU2127358C1 |
| METHOD OF OIL FIELD DEVELOPMENT | 2016 |
|
RU2648135C1 |
