FIELD: oil and gas industry, particularly to prevent fluid migration in channels of the support in working, nonworking or conserved state.
SUBSTANCE: composition includes saponified tall oil pitch, condensed spent sulfite-alcohol liquor and water preheated up to 85-96°C. The components are taken with the following amounts (by weight): saponified tall oil pitch - 35-40;, condensed spent sulfite-alcohol liquor 15-25; and preheated water - remainder. Composition may additionally include dispersed mineral or organic filler taken in amount of 5-80% by weight counting on composition mass. The composition may be used to isolate crack-porous beds during well drilling or as buffer solution during casing pipe cementation.
EFFECT: prevention of gas migration due to forming sealing screens and prevention of fresh headwater and atmosphere pollution, as well as elimination of fire and explosion hazard in neighboring territories.
4 cl, 2 ex, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR EXPRESS-REPAIRS TO RESTORE PRESSURIZATION OF GAS-WATER-OIL SHOWING WELLS | 2005 |
|
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| METHOD OF EXPRESS-REPAIR FOR RESTORATION OF TIGHTNESS OF GAS-WATER-OIL SHOWINGS OF WELLS | 2008 |
|
RU2364702C1 |
| SEALING COMPOSITION | 0 |
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| METHOD OF EXPRESS REPAIR TO RECOVER TIGHTNESS OF GAS-WATER-OIL EXPOSING WELLS | 2010 |
|
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| VISCOELASTIC MATERIAL OF COMBINED ACTION WITH VARIABLE PROPERTIES | 0 |
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| METHOD FOR ELIMINATION OF FLUID CROSSFLOWS IN A WELL | 2018 |
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| VISCOELASTIC STRUCTURE FOR ISOLATION OF THE INTERSTRUCTION SPACE OF WELLS | 2016 |
|
RU2620674C1 |
| COMPOSITION FOR CEMENTING LOW-TEMPERATURE WELLS | 0 |
|
SU927969A1 |
| METHOD OF ELIMINATING CASING SEAL FAILURE | 0 |
|
SU1661360A1 |
