| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention concerns composition for well insulation and water supply limitation and can be applied in insulation of space inside and between casing, sealing of casing and threaded joints, insulation of flooded layers in oil and gas wells. Composition contains, wt %: Carbamide formaldehyde resin 20.0-70.0, surfactant or surfactant mix 0.5-4.0, natural or synthetic rubber or rubber mix 0.05-50.0, polymerisation initiation agent 0.5-3.0, the rest is water. ^ EFFECT: enhanced insulation and elastic strain properties, resistance to aggressive formation media. ^ 1 ex, 2 tbl |
