FIELD: oil industry.
SUBSTANCE: invention relates to the oil industry and can be used to increase the oil recovery of reservoirs with a high reservoir temperature. The composition for increasing oil recovery of the reservoir is an aqueous solution of a gel-forming thermotropic composition at a concentration of 5-15 wt%. The gel-forming thermotropic composition contains, by wt%: aluminum polyoxychloride or aluminum penta hydroxychloride 15-45; titanium coagulant 5-25; urea 25-75; cationic polyacrylamide 0.1-5. The degree of ionic charge of cationic polyacrylamide is higher than 30.
EFFECT: increase in oil recovery of the reservoir, a decrease in the water content of the extracted products.
1 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR INCREASING THE PETROLEUM RECOVERY | 2020 |
|
RU2757943C1 |
| COMPOSITION OF REAGENT FOR DEVELOPMENT OF OIL FIELD BY FLOODING AND METHOD OF ITS APPLICATION | 2018 |
|
RU2693104C1 |
| OIL DEPOSIT DEVELOPMENT METHOD | 2019 |
|
RU2716316C1 |
| COMPOSITION OF MULTI-FUNCTIONAL REAGENT FOR PHYSICAL AND CHEMICAL ADVANCED RECOVERY METHODS (ARM) | 2013 |
|
RU2529975C1 |
| METHOD OF INCREASING OIL RECOVERY OF FORMATIONS | 2020 |
|
RU2735821C1 |
| THERMOTROPIC GEL-FORMING COMPOSITION | 2009 |
|
RU2406746C1 |
| THERMOTROPIC GEL-FORMING COMPOSITION | 2014 |
|
RU2557566C1 |
| METHOD FOR ISOLATION OF WATER PRODUCTION TO PRODUCING OIL WELLS | 2009 |
|
RU2396419C1 |
| RESERVOIR RECOVERY INCREASING COMPOSITION | 2013 |
|
RU2541667C1 |
| WATER-FLOODED OIL DEPOSIT DEVELOPMENT METHOD | 2011 |
|
RU2475635C1 |
