DEVICE FOR DOSING REAGENT SUPPLY INTO THE WELL Russian patent published in 2021 - IPC E21B37/06 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used for uniform dosing of a chemical reagent during oil production in difficult conditions using sucker rod pump installations. The device is installed in a well below a sucker rod pump, contains a container with a liquid reagent with a dosage hole, communicated with a positive displacement plunger pump - a dispenser with a drive, the response frequency of which is proportional to the oscillation frequency of the sucker rod pump drive. The device is equipped with a unit for supplying a displacing liquid into a container with a liquid reagent, made in the form of a gravitational separator, the channels of which in the upper part are connected to check valves. The plunger of the metering pump is connected to the suction valve of the sucker rod pump; a porous element is installed above the metering hole in the container with the liquid reagent.

EFFECT: design is simplified and the reliability of the device is increased.

1 cl, 2 dwg