BLOCKING FLUID "ЖГ-ИЭР-Т" Russian patent published in 2009 - IPC C09K8/42 

FIELD: mining.

SUBSTANCE: invention can be implemented at boring and killing of wells characterised with presence of unstable and subject to hydration rocks, salt sediments, hydro-sulphuric aggressions and high bottom hole temperature. Blocking fluid contains (per 1 m³ of fluid) hydrocarbon phase - oil or diesel fuel 400-700 l; organophilic clay 10-35 kg; emulsifier "МР" or "нефтенол НЗб" 20-40 kg, hydrophobisator "АБР" 5-25 kg, mineralised water phase 300-600 l, and filtration regulator - chalk 25-60 kg. The invention is developed in dependant claims.

EFFECT: increased stability of blocking fluid under conditions of hydro-sulphuric aggression, possibility to use it at boring and killing of wells characterised with presence of unstable, subject to hydration rocks and in salt sediments.

5 cl, 1 ex, 7 tbl