Downhole dosing slow-release device

Abstract

The invention discloses a downhole dosing barrel which comprises a medicament barrel, a sealing ring, a suction pump, quick joints, a medicament feeding pipe and an oil well casing connection pipe. The medicament barrel is connected with one end of the hand-shaking suction pump, and the sealing ring is arranged at the junction; the other end of the hand-shaking suction pump is connected with the medicament feeding pipe through the corresponding quick joint; the medicament feeding pipe is connected with the oil well casing connection pipe through the corresponding quick joint; and the oil wellcasing connection pipe is provided with a buckle used for enabling the oil well casing connection pipe and an oil well to be fixed in a sealed mode. The downhole dosing barrel is simple in structure,easy to disassemble, low in cost, capable of achieving single-well sealed dosing, environmentally friendly and high in efficiency, the dosing quantity and speed can be freely adjusted, small-dose continuous dosing can be conducted for multiple times, and the oil well dosing effect is guaranteed.

Description

technical field [0001] The invention relates to the field of oil well auxiliary devices, in particular to an underground medicine adding barrel. Background technique [0002] During oil extraction, oil well wax deposition, scaling, and corrosion are prominent problems in the oilfield development process. At present, the solution to such problems is usually to install a fixed dosing device at the wellhead or in the oil production room, and regularly pump the oil into the well through the casing. Injecting anti-wax, anti-scaling, and anti-corrosion agents, although this method can solve the problems of wax deposition, scaling, and corrosion in oil wells, the production cost is high; when the pressure of the casing gas is high, it must be vented to add the drug smoothly , which has caused great pollution to the environment, and also wasted a large amount of natural gas. Contents of the invention [0003] In view of the above defects or deficiencies, the object of the present...

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Problems solved by technology

[0002] During oil extraction, oil well wax deposition, scaling, and corrosion are prominent problems in the oilfield development process. At present, the solution to such problems is usually to install a fixed dosing device at the wellhead or in the oil production room, and regularly pump the oil into the well through the casing. Injecting anti-wax, anti-scaling, and anti-corrosion agents, although this method can solve the problems of wax deposition, scaling, and corrosion in oil wells, the production cost is high; when the pressure of the casing gas is high, it must be vented to add the drug smoothly , which has caused great pollution to the environment, and also wasted a large amount of natural gas

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