The results of the use of inactive salt solutions during well killing in West Siberian oil fields

To prevent clay swelling and to clean the formation bottom zone during the well overhaul it is proposed to use technological liquids containing salt ammoniac and nonionic surfactants. Well killing technology supposes injection of the part of technological liquid into the formation perforated interval. The analysis of the performed overhauls at the West Siberian field wells has proved the time of well reactivating reduced with its production rate increasing.