FIELD: chemistry.
SUBSTANCE: invention relates to oil and gas industry, particularly viscoelastic compositions used to seal influx of water into a well. The viscoelastic composition for sealing influx of water into a well contains, wt %: polyvinyl alcohol - 5-7, surfactant Polyfos- 0.5-2.0, Protectol GA 50 - 0.2-0.5, water - the balance.
EFFECT: improved processing properties due to controlled gelling time and viscosity which enables the composition to penetrate into a porous medium, high adhesion to metal pipes, improved insulation properties which enable to form a reliable insulating shield.
1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| VISCOUS ELASTIC COMPOSITION FOR BOREHOLE OPERATIONS | 2008 |
|
RU2380394C2 |
| VISCOELASTIC COMPOSITION FOR INSULATING FLOW OF STRATAL WATER INTO WELLS (VERSIONS) | 2008 |
|
RU2377389C1 |
| COMPOSITION FOR RESTRICTING INFLOW OF WATER INTO WELLS | 2009 |
|
RU2411278C1 |
| COMPOSITION FOR SHUTOFF OF WATER INFLOWS TO WELL | 2001 |
|
RU2209297C2 |
| COMPOSITION FOR SEALING INFLUX OF WATER INTO WELL | 2011 |
|
RU2495074C2 |
| VISCOELASTIC COMPOSITION FOR INSULATING OPERATIONS IN WELLS | 2008 |
|
RU2356929C1 |
| METHOD FOR INJECTION WELL INFECTIVITY PROFILE ALIGNING AND WATER IN-FLOW LIMITATION FOR PRODUCTION WELL (VERSIONS) | 2009 |
|
RU2382185C1 |
| PROCEDURE FOR DEVELOPMENT OF NON-UNIFORM RESERVOIR | 2010 |
|
RU2424426C1 |
| PROCEDURE FOR DEVELOPMENT OF NON-UNIFORM RESERVOIR | 2010 |
|
RU2431741C1 |
| METHOD FOR WATER INFLOW ISOLATION IN HIGH-TEMPERATURE RESERVOIRS | 2004 |
|
RU2272891C1 |
