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Capillary reagent supply systems consists of a dosing unit (with customer-defined parameters) and capillary piping with a set of accessories.

Capillary systems are used when it is necessary to dose a reagent to a specific point in the well, for example:

1. Dosing a corrosion inhibitor downstream of the ESP to fully protect the ESP unit;
2. Dosing demulsifier or ARPD inhibitor to the submersible pump intake;
3. Pumping solvent into the perforation intervals.

The main effect is determined by the guaranteed supply of the reagent to a predetermined location without the influence of side.

Depending on the customer's conditions, capillary systems are equipped with various auxiliary devices:

1. Cable protectors according to customer's conditions (additional capillary protection);
2. Protectolizer (capillary pipe protection at ESP neck transition);
3. Tubing couplings with reagent injection valve (reagent supply to the tubing above the pump);
4. Depth spray valves (protection against discharge through capillary);
5. Weighted weights (for stable capillary positioning under the pump);
6. Repair kits for joining pipelines;
7. Inter-flanged or glanded capillary piping entry device into the well.

When polyethylene-based hoses are used to dispense inhibitors and solvents over a long period of time, they often fail. We solved this issue by using capillaries with stainless steel inner tube.