FIELD: oil industry.
SUBSTANCE: invention relates to the field of the oil industry, namely to compositions for isolating leaks in wells of oil and gas fields, in particular, isolating small-sized leaks in the well string and leaks in threaded pipe joints, and can be used for overhaul of wells. The composition for isolating leaks in production wells contains, wt.%: colloidal silica - 26.0-41.0; nanocellulose - 0.025-0.5; gelation activator - 0.2-4.0; thickening filler - wood flour - 0.01-2.0; fresh industrial water - the rest.
EFFECT: increasing effectiveness of insulation: deep penetration of the composition into small violations of the tightness, increasing the strength of the resulting tampon.
1 cl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| JUSTIFICATION METHOD OF INPUT PROFILE IN INJECTION WELL | 2015 |
|
RU2610961C1 |
| METHOD FOR DEVELOPMENT OF INHOMOGENEOUS OIL FORMATION | 2019 |
|
RU2738544C1 |
| BLOCKING COMPOSITE FOR ISOLATION OF LOSS-CIRCULATION ZONES DURING WELL DRILLING AND WORKOVER OPERATION | 2012 |
|
RU2487909C1 |
| METHOD OF INJECTION WELLS INPUT PROFILE ALIGNMENT AND PRODUCTION WELLS WATER FLOW LIMITATION | 2008 |
|
RU2375557C1 |
| VISCOELASTIC COMPOSITION FOR INSULATING OPERATIONS IN WELLS | 2008 |
|
RU2356929C1 |
| WELL PROCESS FLUID WITH CONTROLLED ABSORPTION IN THERMO BARIC-RESERVOIR CONDITIONS | 2008 |
|
RU2380391C1 |
| METHOD OF ISOLATION OF WATER SUPPLY IN OIL-EXTRACTING WELL | 2017 |
|
RU2655495C1 |
| WEIGHTED LIQUID WITHOUT A SOLID PHASE FOR KILLING OIL AND GAS WELLS | 2020 |
|
RU2744224C1 |
| METHOD OF BOTTOM-HOLE REGION LINING | 2010 |
|
RU2467156C2 |
| COMPOSITION FOR BLOCKING AND PLUGGING OIL, GAS AND GAS-CONDENSATE WELLS | 2007 |
|
RU2353641C2 |
