Polished rod kinetic energy chemical feeding device

Abstract

The invention provides an optical rod kinetic energy chemical feeding device. An inlet pipeline of a chemical feeding pump is connected with a chemical feeding barrel, the inlet of the chemical feeding pump is provided with a one-way valve A, an outlet pipeline of the chemical feeding pump is connected to a pressure regulating valve, a one-way valve B is arranged at an outlet of the chemical feeding pump, the back side of the one-way valve B is provided with a pressure gauge A, an outlet pipeline of the pressure adjusting valve is connected to a well pipeline, the pressure gauge B is arrangedon the well pipeline, a one-way valve C, a one-way valve D, a discharging valve and a switching valve are sequentially arranged at the back side of an outlet of the pressure adjusting valve, and a reflux inlet pipeline of the pressure adjusting valve is connected to the top of a liquid lever meter. The optical rod kinetic energy chemical feeding device has the advantages that the kinetic energy ofan oil pumping machine is fully utilized to serve as motive power of the chemical feeding pump, addition of extra power equipment is not required, the device is easy to maintain, the organic cooperation between the device and a wellhead does not influence other operation of the wellhead, and the effect of reducing the chemical feeding cost can be achieved; the chemical feeding amount can be adjusted, and accurate medicine addition can be achieved without stopping operation of the well; the device is small in size, easy to install, less in maintenance demand and attractive in appearance.

Description

technical field [0001] The invention relates to the field of oil well dosing pumps, in particular to a polished rod kinetic energy dosing device. Background technique [0002] In oil field development, during the oil well dosing process, the wellhead chemical pump is currently used for oil well dosing. The timing and quantitative dosing of wellhead chemicals can be realized by using the dosing pump, and the pressure dosing work at the wellhead of the oil well can also be realized by using the dosing pump. However, the cost of dosing pumps is too high. [0003] For oil wells without chemical pumps, one-time dosing of casings is often used, and there are problems such as uneven use of chemical agents. At the same time, for wells with high oil well back pressure caused by thick oil and wax deposition, if the dynamic liquid level is shallow and the submergence is high, the effect of dosing the oil well casing is not obvious, and the steady addition of the dosing cannot be achi...

AI Technical Summary

Problems solved by technology

However, the cost of the dosing pump is too high

[0003] For oil wells without chemical pumps, one-time dosing of casings is often used, and there are problems such as uneven use of chemical agents

At the same time, for wells with high oil well back pressure caused by thick oil and wax deposition, if the dynamic liquid level is shallow and the submergence is large, the effect of dosing the oil well casing is not obvious, and the steady addition of the dosing cannot be achieved without the dosing pump

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