FIELD: oil recovery from formation; applicable at any stage of oil deposit development with waterflooding for intensification of work of producing wells and increase of actual oil recovery from formation. SUBSTANCE: composition for oil withdrawal has liquid hydrocarbon, oil-soluble surfactant Neftenol NZ, stabilizer of said composition with water repellent properties - calcium chloride, water and additionally dibutyl phthalate or diethyl phthalate, with the following amounts of components, wt.%: liquid hydrocarbon 10.0-20.0; oil-soluble surfactant Neftenol NZ 0.3-3.0; stabilizer with water-repellent properties - calcium chloride 5.0-10.0; dibutyl phthalate or diethyl phthalate 1.0-3.0; the balance, water. EFFECT: higher safety in work with simultaneous increase of composition oil displacing properties. 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR OIL EXTRACTION | 1994 |
|
RU2065033C1 |
| OIL RECOVERY COMPOSITION | 2003 |
|
RU2244809C2 |
| INVERT EMULSION FOR OIL RESERVOIRS TREATMENTIT'S COMPOSITION, PREPARATION AND APPLICATION METHODS | 2008 |
|
RU2381250C1 |
| INVERT MICROEMULSION FOR TREATING OIL BEDS | 1996 |
|
RU2110675C1 |
| INVERTED EMULSION FOR TREATMENT OF OIL FORMATION | 1999 |
|
RU2196224C2 |
| ISOLATION METHOD OF WATER INLUX IN PRODUCTION WELLS | 2011 |
|
RU2471060C2 |
| COMPOUND FOR TREATMENT OF BOTTOM-HOLE FORMATION ZONE | 1995 |
|
RU2099518C1 |
| WATER REPELLENT EMULSION FOR OIL RESERVOIRS TREATMENT | 2008 |
|
RU2379326C1 |
| COMPOUND FOR TREATMENT OF BOTTOM-HOLE FORMATION ZONE | 1995 |
|
RU2099519C1 |
| INVERT EMULSION FOR PROCESSING OIL POOLS | 2007 |
|
RU2333928C1 |
