Drilling Innovation LLC together with the partner company Innoil LLC have took a part in isolation of behind – the – casing flow on well no. 8554 of West - Bureykinskogoe oilfield (Central part of Russia). Despite a pelting rain that accompanied almost all cycle of jobs on pumping of LCM, the reagent was easily injected into the problem zone as soon as possible. The jobs were performed within 4 hours. This reagent having capability to increase in volume up to 20 times in contact with water, has helped to solve one more problem of oilmen.