METHOD FOR INTERNAL CORROSION PROTECTION OF FLOW OIL-PIPE LINES Russian patent published in 2013 - IPC F17D3/12 C23F11/00 C23F15/00 E21B37/06 

FIELD: oil and gas industry.

SUBSTANCE: corrosion inhibitor is dosed before supplying to pumps randomly pumping off wells from tanks as they are filled. After the tank is filled, the oil and water production is automatically pumped off with a pump, wherein the corrosion inhibitor is dosed into an inlet header of the pump for pumping off the well production with the dosing pump. The dosing pump is started up automatically and synchronised with the start-up of the pump for pumping off the well production. The dosing pump is stopped automatically once the watercut of the received production is reduced to 30%. To control the watercut of the received well production, an on-line instrument measuring the water content is installed on the flow oil-pipe line.

EFFECT: reduced consumption of the corrosion inhibitor and improved corrosion protection effect.

1 dwg