Automatic controlled drop dosing device for oil well

Abstract

The invention belongs to the technical field of dosing devices for an oil well, and particularly relates to an automatic controlled drop dosing device for the oil well. The automatic controlled drop dosing device for the oil well comprises a chemical box, a dosing pump and an electric control box; the chemical box and the dosing pump are installed in a heat preservation shell body in a sealed mode; the dosing pump is a duplex plunger metering pump which is provided with two pump heads, namely the pump head A and the pump head B, and rotation shafts in the two pump heads are connected in series through a coupling; and chemical agents coming from the chemical box and water coming from a water source of a well opening are pressurized through the pump head A and the pump head B correspondingly, gathered in a mixer together and mixed in the mixer, and then chemical liquid is formed. According to the automatic controlled drop dosing device for the oil well, the dosing mode of an existing dosing device is changed; by means of the method that the chemical liquid is prepared on the scene by utilizing the water source of the well opening, so that only the chemical agents with high concentration need to be stored in the chemical box, and the prepared chemical liquid does not need to be stored in the chemical box; and accordingly, the one-time dosing amount of the chemical box is greatly improved, the frequency of supplementing the chemical agents (or the chemical liquid) through labor is reduced, labor cost is reduced, and production benefits are improved.

Description

technical field [0001] The invention belongs to the field of oil well dosing equipment, in particular to an oil well automatic control drip dosing device. Background technique [0002] In the process of oil field production, in order to achieve the purpose of wax removal and anticorrosion, it is necessary to inject chemical agents between the tubing and casing of the oil well, and the equipment used for chemical dosing is called chemical dosing equipment. Most of the existing dosing equipment has its own medicine box. When adding medicine, it is necessary to add a well-proportioned medicine solution into the medicine box, and then inject the medicine solution into the oil casing annulus of the oil well through the dosing pump. This kind of dosing The defect of the equipment is that: since the medicine box is filled with a well-proportioned liquid medicine, the volume of the medicine box is small when the volume of the medicine box is constant, and the frequency of manual rep...

AI Technical Summary

Problems solved by technology

Most of the existing dosing equipment has its own medicine box. When adding medicine, it is necessary to add a well-proportioned medicine solution into the medicine box, and then inject the medicine solution into the oil casing annulus of the oil well through the dosing pump. This kind of dosing The defect of the equipment is that: since the medicine box is filled with a well-proportioned liquid medicine, the volume of the medicine box is small when the volume of the medicine box is constant, and the frequency of manual replenishment of the medicine (or liquid medicine) is relatively high. , the labor cost is also higher

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