FIELD: oil extractive industry, in particular, methods for extracting oil from heterogeneous oil bed by controlling enveloping of bed by water-flooding and redistribution of filtration streams due to decreased penetrability of highly penetrable bed zones.
SUBSTANCE: oil extraction method includes preliminary performing of a complex of hydro-dynamic research and forcing of compound into bed, containing, in percents of mass: polyacrylamide 0,05-0,0, aluminum salt 0,0075-0,15 and water the rest, aforementioned composition is produced in form of suspension of colloid particles by continuous dosing of 7-10% of water solution of aluminum salt into water suspension of polyacrylamide, while ratio of aluminum salt is 15-30% of mass content of polyacrylamide.
EFFECT: increased oil extraction efficiency due to forcing of compound for full stopping of highly penetrable bed zones and redistribution of filtration streams, and also due to absence of adsorption of aforementioned compound in the bed and simplification of technological process.
2 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| OIL PRODUCTION METHOD | 2011 |
|
RU2485301C1 |
| OIL PRODUCTION METHOD | 1995 |
|
RU2086757C1 |
| PROCEDURE FOR CONTROL OVER WATER FLOOD OF NON-UNIFORM RESERVOIR | 2010 |
|
RU2436941C1 |
| DEVELOPMENT METHOD OF NON-HOMOGENEOUS OIL FORMATION | 2010 |
|
RU2418156C1 |
| PROCEDURE FOR REGULATION OF INTAKE CAPACITY PROFILE OF PRESSURE WELL (VERSIONS) | 2009 |
|
RU2398958C1 |
| COMPOSITION OF REAGENT FOR DEVELOPMENT OF OIL FIELD BY FLOODING AND METHOD OF ITS APPLICATION | 2018 |
|
RU2693104C1 |
| METHOD OF DEVELOPING AN OIL DEPOSITE | 2020 |
|
RU2743744C1 |
| USING TITANIUM COAGULANT FOR TREATMENT OF WATER-FLOODED OIL RESERVOIR | 2015 |
|
RU2581070C1 |
| OIL DEPOSIT DEVELOPMENT METHOD | 2019 |
|
RU2716316C1 |
| METHOD OF INCREASING OIL RECOVERY OF FORMATIONS | 2020 |
|
RU2735821C1 |
