Restoring Circulation in Producing Oil Wells with Low Resistance to Circulation Lost

Goal: To restore the circulation in the well, when it is difficult or even impossible to fill and circulate the well with completion fluid for work-over purposes.

Achieved : By temporary blocking the lost circulation zone with water solution of NMN and electrolytes, and pumping down simultaneously. This method is used while work-over operations in production or injection wells, when lost circulation is really hard.
It may be used in drilling too as an effective way to isolate the lost circulation zones.