FIELD: production of hydrocarbons.
SUBSTANCE: composition suitable for enhanced oil recovery comprises: (A) internal ketones sulfonated at the alpha position of the ketone group, and (B) non-sulfonated internal ketones, with a molar ratio B/(A+B) corresponding to the molar concentration of non-sulfonated ketones in which the molar ratio B/(A+B ) ranges from 15% to 50%. The claimed composition is injected into said underground formation through at least one injection well; and an oil transport fluid leaving the subterranean formation is recovered through at least one production well.
EFFECT: reduction of reservoir damage by increasing and stabilizing the mobility of the injected composition.
9 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ANIONIC SURFACTANTS | 2017 |
|
RU2700772C2 |
| COMPOUND FOR ENHANCED OIL RECOVERY | 2015 |
|
RU2612773C1 |
| MICCELAR SLUDGE FOR OIL PRODUCTION | 0 |
|
SU1650016A3 |
| METHOD AND COMPOSITION FOR TERTIARY METHOD OF HYDROCARBONS PRODUCTION | 2011 |
|
RU2555017C2 |
| LAMINATED SULPHONATED BLOCK COPOLYMER MEMBRANE FOR VENTILATION WITH ENERGY RECOVERY | 2011 |
|
RU2587445C2 |
| METHOD FOR OBTAINING PETROLEUM SULFONATES | 2015 |
|
RU2622652C1 |
| ELASTIC MOISTURE- AND VAPOUR-PERMEABLE FILMS, PRODUCTION AND USE THEREOF | 2011 |
|
RU2564017C2 |
| METAL-NEUTRALISED SULPHONATED BLOCK COPOLYMERS, METHOD FOR PRODUCTION AND USE THEREOF | 2010 |
|
RU2517560C2 |
| MICROEMULSION FOR OIL PRODUCTION | 0 |
|
SU1349703A3 |
| SURFACTANT FOR CLEANSING AGENT AND DEEP-WELL EXTRACTION OF PETROLEUM | 0 |
|
SU1442079A3 |
