The invention provides an intelligent micro-control
group control oil well dosing device and method.The device comprises a host and a
wellhead skid, the host comprises a PLC, a
signal amplifier, a self-priming pump, a
chemical tank, a dosing pump, a filtering device, a constant-pressure tank and a total flowmeter, the PLC controls the self-priming pump to feed water into the
chemical tank through the
signal amplifier, and the PLC controls the dosing pump to feed water into the
chemical tank through the filtering device; a medicament is added into the medicament tank, the mixed medicament enters the medicament adding pump through the filtering device, the medicament adding pump conveys the mixed medicament to the constant-pressure tank, the medicament is metered through the total flow meter after
constant pressure, then the medicament is conveyed into the
wellhead skid, the medicament is metered again in the
wellhead skid, and then the medicament is injected through an
oil well casing. And real-time metering of single-well dosing data is realized. The intelligent micro-control group-control
oil well dosing device and method are high in
automation degree and safe and stable in operation, the labor intensity of workers and potential safety hazards are greatly reduced, and the loss of water and chemicals during oil well dosing is reduced.