FIELD: oil and gas industry.
SUBSTANCE: well treatment liquids include water, at least one hydratable polymer, granules of sodium percarbonate with the coating retarding its liberation. As per the first version, the above coating is non-organic material. As per the second version, the above coating includes mixture of styrene-acrylate and butyl acrylate. Underground formation hydraulic fracturing method involves granules of sodium percarbonate with coating from non-organic material retarding its liberation. Inventions have been developed in dependent claims.
EFFECT: avoiding premature viscosity reduction of treatment liquid due to using sodium percarbonate granules with the coating retarding its liberation.
23 cl, 4 tbl, 6 ex, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING GRANULE OF COATED OXIDISING AGENT; OBTAINED GRANULE AND ITS USE | 2008 |
|
RU2471848C2 |
| METHODS AND FLUIDS FOR WELL TREATMENT | 2015 |
|
RU2689940C2 |
| POLYMER LIQUID WITH INITIATED THICKENING FOR PUMPING TO FORMATION AND METHODS FOR ITS APPLICATION | 2011 |
|
RU2544932C2 |
| REDUCTION OF VISCOSITY | 2008 |
|
RU2448243C2 |
| METHOD FOR MAKE-UP OF FLUID PURPOSED FOR TREATMENT OF UNDERGROUND FORMATIONS AT HYDRAULIC FRACTURING | 2012 |
|
RU2500714C1 |
| METHODS OF APPLICATION OF PARTICLES WITH POLYMER COATING | 2006 |
|
RU2397320C2 |
| PROMOTERS FOR PEROXIDES IN AQUEOUS TREATMENT FLUIDS | 2014 |
|
RU2658424C2 |
| COMPOSITIONS AND METHODS FOR FLUID FRACTURING DILUTION FOR HYDRAULIC FRACTURING | 2015 |
|
RU2703573C2 |
| PROCEDURE FOR TREATMENT OF UNDERGROUND RESERVOIR USING RHEOLOGICAL MODEL FOR OPTIMISATION OF FLUID MEDIUM | 2007 |
|
RU2424428C2 |
| UTILIZATION OF BORON AS CROSSLINKING AGENT IN EMULSION SYSTEM | 2015 |
|
RU2664987C2 |
