FIELD: oil-and-gas industry.
SUBSTANCE: in compliance with this process, working fluid is injected via injection wells. Oil is extracted via production wells to effect primary and secondary hydro frac in wells. At secondary hydrofrac seams are perforated at density of at least 10 bores per running meter of hydrofrac interval. Proppant is injected in amount of at least 10% larger than that at primary hydro frac. Final concentration of proppant is increased as compared with primary hydrofrac by at least 10%. Volume of polymer gel-forming agent as compared with primary hydrofrac is decreased by at least 10%.
EFFECT: higher efficiency of secondary hydro frac.
3 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DEVELOPING LOW-PERMEABILITY OIL RESERVOIRS | 2015 |
|
RU2579095C1 |
| METHOD OF HYDRAULIC FRACTURING IN INJECTION WELL | 2016 |
|
RU2603869C1 |
| METHOD TO DEVELOP OIL POOL | 2014 |
|
RU2551571C1 |
| METHOD TO INTENSIFY OPERATION OF WELL THAT EXPOSED MULTIPAY DEPOSIT | 2013 |
|
RU2524079C1 |
| METHOD OF INTENSIFICATION OF WELL OPERATION AFTER ITS CONSTRUCTION | 2019 |
|
RU2705643C1 |
| WELL OPERATION INTENSIFICATION METHOD | 2012 |
|
RU2494243C1 |
| WELL OPERATION STIMULATION | 2014 |
|
RU2540712C1 |
| WELL OPERATION STIMULATION | 2013 |
|
RU2531716C1 |
| FORMATION HYDRAULIC FRACTURING METHOD | 2015 |
|
RU2583803C1 |
| INTENSIFICATION METHOD FOR WELL OPERATION | 2019 |
|
RU2720717C1 |
