FIELD: oil producing industry, particularly enhanced recovery methods for obtaining hydrocarbons.
SUBSTANCE: method involves injecting dispersion of oil-soluble nonionic surfactant of oxyethylated alkyl phenol with 5-7 oxyethyl groups in mineralized water into reservoir through injection wells; forcing above dispersion of 1-2% concentration in amount of 750-1500 m3 per one well into reservoir with the use of mineralized water taken in amount of 1-2 well borehole volumes; sustaining technological time interval for 7-14 days.
EFFECT: increased efficiency of oil washing out with the use the dispersion of oxyethylated alkyl phenol in mineralized water due to increased reservoir sweep, reduced costs.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OIL BED EXTRACTION | 2003 |
|
RU2244812C1 |
| INJECTIVITY PROFILE CONTROL METHOD FOR INJECTION WELL AND WATER INFLUX RESTRICTION METHOD FOR PRODUCING WELL | 2005 |
|
RU2285785C1 |
| METHOD FOR DEVELOPMENT OF OIL RESERVOIR HETEROGENEOUS IN PERMEABILITY | 2020 |
|
RU2748198C1 |
| METHOD OF TREATING NON-UNIFORM PERMEABILITY OIL FORMATION | 2023 |
|
RU2832923C1 |
| METHOD FOR EXTRACTION OF NON-HOMOGENOUS WATER-CLOGGED OIL BED | 2004 |
|
RU2255213C1 |
| METHOD FOR ADDITIONAL WASHING-OFF OF RESIDUAL OIL | 1987 |
|
RU1500017C |
| METHOD FOR DEVELOPING AN OIL RESERVOIR THAT IS HETEROGENEOUS IN TERMS OF PERMEABILITY | 2022 |
|
RU2778501C1 |
| COMPOSITION TO UP BED PRODUCTION RATE (VERSIONS) | 2014 |
|
RU2572439C1 |
| METHOD FOR INCREASING OIL RECOVERY FROM BEDS | 1996 |
|
RU2109132C1 |
| COMPOUND FOR DRIVING OIL | 1991 |
|
RU2006572C1 |
