FIELD: oil and gas production.
SUBSTANCE: invention refers to compositions for stabilisation of bottomhole zone of oil and gas wells. The composition for stabilisation of oil and gas wells, including formaldehyde resin and a hardener - solution of sulphuric acid, contains solution of toluene-sulphuric acid in infusion of hydrolytic lignin, the waste of hydrolysis of wood chips and sawdust at weight ratio of alcohol and hydrolytic lignin 10:1-1:1, additionally contains neonol, and prevocel at following ratio of hardener components, wt %: the said infusion 10-40, neonol and prevocel 8-12, toluene-sulphuric acid - the rest at amount of the said hardener 7-15 wt %. As filler the composition can additionally contain disperse particles of hydrolysis lignin left after the said infusion at amount of 3-20 wt %.
EFFECT: raised efficiency of insulation of watered collectors of bottomhole zone of oil and gas wells due to increased penetrability of composition and blocking effect.
2 cl, 5 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF ISOLATION OF THE WATER INFLUX IN THE HOLE | 2006 |
|
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| COMPOSITION FOR CASING BREAST-SIDE ZONE OF SEAM | 0 |
|
SU1694857A1 |
| METHOD OF KILLING OF DEEP AND ULTRADEEP WELLS AND PIPELINES | 1992 |
|
RU2100567C1 |
