A quantitative dosing device for oilfield wellhead with backflow self-protection

Abstract

The invention discloses an oilfield wellhead quantitative dosing device with backflow self-protection, and relates to the technical field of oilfield wellhead dosing devices, including a first housing, a first liquid medicine storage, a first transparent measuring barrel, and a first slip ring , the first electric push rod, the first displacement sensor, the first L-shaped connecting pipe, the second liquid medicine storage, the second transparent measuring barrel, the second slip ring, the second electric push rod, the second displacement sensor, the second Solenoid valve, the second L-shaped connecting pipe, the third L-shaped connecting pipe, the pipe joint and the detection spray-melting mechanism; the present invention reduces the crude oil impurities by dissolving the wax on the inner wall of the oil pipe and the mineral impurities contained in the crude oil in the oil pipe , and by detecting the first pressure sensor and infrared sensor and the first displacement sensor and the second displacement sensor in the spray-melt mechanism, the collected data in the oil pipe are collected, analyzed and sorted out to analyze and obtain the quality of crude oil.

Description

technical field [0001] The invention relates to the technical field of oilfield wellhead dosing devices, in particular to an oilfield wellhead quantitative dosing device with backflow self-protection. Background technique [0002] After the water-containing crude oil is extracted from the ground, it needs to be transported to the downstream site through pipelines, and then add demulsifiers to separate oil and water. At present, oil production companies usually add demulsifiers, corrosion inhibitors, scale inhibitors, etc. to the tubing of the oil production wellhead pipeline; [0003] Such as figure 1 As shown, the tubing a is inserted into the oil field after being drilled, and passes through the surface layer b and the rock layer d to reach the oil zone c, so as to extract the crude oil from the oil zone layer, but acidification will be carried out in the tubing before or during oil production Treatment, use the solution to dissolve the mineral impurities in the tubing to...

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Problems solved by technology

[0003] like figure 1 As shown, the tubing a is inserted into the oil field after being drilled, and passes through the surface layer b and the rock layer d to reach the oil zone c, so as to extract the crude oil from the oil zone layer, but acidification will be carried out in the tubing before or during oil production Treatment, use the solution to dissolve the mineral impurities in the tubing to improve the quality of crude oil, but there are not only mineral impurities in the tubing, because the crude oil is composed of various substances, some of which will cause waxing on the inner wall of the tubing, forming a wax layer f, if the wax layer f is not treated, the wax layer f will become thicker and thicker, which will affect the efficiency of crude oil extraction by the tubing. The usual dosing device cannot treat the wax layer f and mineral impurities at the same time, and can simultaneously treat The usual devices for the treatment of the two cases are often large and the operation is more complicated, and the dosing device cannot simultaneously detect the quality of crude oil;

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