FIELD: oil industry.
SUBSTANCE: invention relates to the oil industry. The acid composition for treatment of the bottomhole zone of a high-temperature carbonate reservoir contains, wt.%: at least one inorganic or organic acid selected from the range: hydrochloric, hydrofluoric, acetic, formic, sulfamic, chloroacetic 9.0 - 24.0; zwitterionic surfactant erucylamidopropylsulfobetaine 1.0 - 10.0; contains non-ionic synthetic polymer polyethyleneimine 0.01 - 0.09; water - the rest.
EFFECT: increasing viscosity at high temperatures, leveling the injectivity profile of injection or production wells in formations that are heterogeneous in terms of permeability, creating new fluid-conducting channels throughout the perforated thickness of the formation, increasing self-diverting properties.
1 cl, 9 dwg, 1 tbl, 15 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ACID COMPOSITION FOR TREATMENT OF BOTTOM-HOLE ZONE OF CARBONATE RESERVOIR | 2014 |
|
RU2554651C1 |
| METHOD OF ACID TREATMENT OF BOTTOM-HOLE ZONE OF CARBONATE RESERVOIR | 2014 |
|
RU2554983C1 |
| COMPOSITION FOR INTENSIFICATION OF HYDROCARBON FLUID INFLUX FROM PORE-CRACKED CARBONATE RESERVOIR | 2017 |
|
RU2669600C1 |
| METHOD FOR HYDRAULIC FRACTURING OF A FORMATION | 2020 |
|
RU2734892C1 |
| FORMULATION FOR ACID TREATMENT OF CRITICAL BOREHOLE ZONE | 2005 |
|
RU2294353C1 |
| METHOD OF SELECTIVE TREATMENT OF PRODUCTIVE CARBONATE FORMATION | 2015 |
|
RU2610967C1 |
| METHOD FOR INTERVAL ACIDISING OF HORIZONTAL WELL USING CARBONATE RESERVOIR | 2014 |
|
RU2554962C1 |
| METHOD OF PROCESSING OIL-FIELD STRATA | 2007 |
|
RU2367792C2 |
| PROCEDURE FOR DEVELOPMENT OF NON-UNIFORM OIL RESERVOIR | 2009 |
|
RU2394155C1 |
| METHOD OF BOTTOM-HOLE ZONE TREATMENT | 2014 |
|
RU2576252C2 |
