Self-operated drop instillator

Abstract

The invention provides a self-operated drop instillator which mainly solves the problems that the existing dosing device needs power, a heat insulating device and an electric heating device, has poor safety and reliability and pollutes the environment. The self-operated drop instillator is characterized in that: a support tank (1) is internally provided with a flotation tank (2), the internal upper part and the internal lower part of the support tank (1) are respectively fixed with a seal ring (3), the support tank (1) is divided into a drug injection chamber (4) and a hydraulic chamber (5) by the seal ring (3) and the flotation tank (2), the drug inlet of the drug injection chamber (4) is communicated with a dosing pump by a pipeline and a valve (6), the drug outlet of the drug injection chamber (4) is communicated with a surface casing pressure valve (11) by a pipeline, a proportional valve (7), a switch valve (8), a check valve (9) and a shut-off valve I (10) in sequence, and the water inlet of the hydraulic chamber (5) is communicated with a watering and water inflowing pipe (12) at the well mouth by a pipeline and the shut-off valve II (10). The self-operated drop instillator is characterized by no need of power or the heat insulating device, good safety and reliability and no pollution to environment.

Description

Technical field: [0001] The invention relates to a dosing device used in an oil well in the field of oil production in an oil field, in particular to a self-operated dripping device. Background technique: [0002] In the process of oil production in the oil field, due to the composition of the well fluid, wax formation, scaling and corrosion of the tubing string, sucker rod, pump and surface gathering and transportation pipeline will cause the normal production of the oil well and the back pressure of the wellhead will be high. In order to eliminate the above problems, it is necessary to inject chemicals into the oil well casing through the dosing device to achieve the purposes of wax prevention, scale prevention, corrosion inhibition and viscosity reduction. However, the current dosing device needs power and heat preservation device due to structural reasons, and also needs to be heated by an electric heating device, which has the problems of poor safety and reliability and...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of existing dosing devices that require power, heat preservation devices and electric heating devices, poor safety and reliability, and pollute the environment, the present invention provides a self-operated infusion device that does not need power, heat preservation devices and The electric heating device uses the water in the heating pipeline for heating, which has the characteristics of good safety, reliability and no pollution to the environment

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