Oil well yield and oil-water automatic measuring instrument

Abstract

The utility model relates to oil extraction equipment, in particular to an oil well yield and oil-water automatic measuring instrument. An oil well yield and oil-water automatic measuring instrument comprises a main pipeline and a controller, the main pipeline is provided with a three-way valve, the three-way valve is communicated with an oil inlet pipe, the oil inlet pipe is communicated with the upper portion of a measuring cylinder, the measuring cylinder is provided with a liquid level instrument and a water content measuring instrument, and the lower portion of the measuring cylinder is communicated with an oil outlet pipe. The device is high in automation degree, reduces the labor intensity, can be circulated, can measure the required numerical value, and is high in metering precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of oil extraction equipment, specifically to a kind of oil well production and oil-water automatic measuring instrument. BACKGROUND

[0002] The production measurement of oil and gas well is an important basic work of oilfield development and production. Since oil wells produce oil, gas, water and other substances, the existing method cannot accurately measure the oil and water production. Therefore, accurately measuring the production of oil wells is of great significance for mastering the production dynamics of oilfields, scientifically formulating and implementing oilfield development adjustment plans, testing the effects of various oilfield development measures, and realizing the quantitative assessment of oilfield production and operation performance. At present, glass tube oil measurement method is widely used in domestic oilfields. This method has low automation degree, high workload and high production measurement error because of manual intermittent oil measurement and manual sampling and analysis of water cut to convert daily production. SUMMARY

[0003] The utility model aims at providing a kind of oil well production and oil-water automatic measuring instrument with low cost, high automation degree and high measurement accuracy.

[0004] The technical scheme of the utility model is:

[0005] The oil well production and oil-water automatic measuring instrument includes a main pipeline and a controller. The main pipeline is provided with a three-way valve. The three-way valve is connected to an oil inlet pipe. The oil inlet pipe is connected to the upper part of a measuring cylinder. The measuring cylinder is provided with a liquid level meter and a water content measuring instrument. The lower part of the measuring cylinder is connected to an oil outlet pipe. The other end of the oil outlet pipe is connected to the main pipeline. The oil outlet pipe is provided with an oil outlet pump.

[0006] The upper flange and the lower flange are respectively arranged at the two ends of the main pipeline.

[0007] A one-way valve is arranged at the upper end of the measuring cylinder.

[0008] A support rod is arranged between the main pipeline and the measuring cylinder.

[0009] The measuring cylinder is provided with an upper liquid level meter and a lower liquid level meter.

[0010] The measuring cylinder is provided with a temperature sensor and a pressure sensor.

[0011] The working principle of the utility model is that the main pipeline is connected to an oil pipeline. Crude oil enters the measuring cylinder through the three-way valve. The liquid level meter of the measuring cylinder measures the time required for a certain volume of crude oil to enter the measuring cylinder, and then calculates the flow rate of the oil pipeline and the production of the oil well. The water content of the crude oil is measured by the water content measuring instrument. The crude oil in the measuring cylinder is returned to the oil pipeline through the oil outlet pump. The utility model has high automation degree, reduces labor intensity, can measure the required value repeatedly, and has high measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1It is the structural schematic diagram of the utility model.

[0013] 1 main pipeline 2 three-way valve 3 upper flange 4 lower flane 5 oil inlet pipe 6 measuring cylinder 7 upper liquid level meter 8 water content measuring instrument 9 lower liquid level meter 10 check valve 11 oil outlet pump 12 oil outlet pipe 13 support rod. DETAILED DESCRIPTION

[0014] The oil well production and oil-water automatic measuring instrument comprises a main pipeline 1 and a controller, upper flange 3 and lower flange 4 are arranged at two ends of the main pipeline 1 respectively, the main pipeline 1 is communicated with an oil delivery pipe through the upper flange 3 and the lower flange 4,

[0015] The main pipeline 1 is provided with a three-way valve 2, the three-way valve 2 is communicated with an oil inlet pipe 5, the oil inlet pipe 5 is communicated with the upper part of a measuring cylinder 6, the upper end of the measuring cylinder 6 is provided with a check valve 10, the measuring cylinder 6 is provided with an upper liquid level meter 7, a lower liquid level meter 9 and a water content measuring instrument 8, the lower part of the measuring cylinder 6 is communicated with an oil outlet pipe 12, the other end of the oil outlet pipe 12 is communicated with the main pipeline 1, the oil outlet pipe 12 is provided with an oil outlet pump 11, and a support rod 13 is arranged between the main pipeline 1 and the measuring cylinder 6.

[0016] The working process of the utility model is as follows: the controller controls the three-way valve 2 to communicate the main pipeline 1 with the oil inlet pipe 5, so that the crude oil in the oil delivery pipe can only enter the measuring cylinder 6 through the oil inlet pipe 5; when the liquid level of the crude oil rises to a certain position, the upper liquid level meter 7 will send a signal to the controller, the controller will control the three-way valve 2 to close the communication between the main pipeline 1 and the oil inlet pipe 5, so that the crude oil in the oil delivery pipe continues to enter the oil delivery pipe through the main pipeline 1; after the three-way valve 2 closes the communication between the main pipeline 1 and the oil inlet pipe 5 for 10 seconds, the state of the crude oil in the measuring cylinder 6 is stable, the water content measuring instrument 8 starts to work and measures the water content parameter, and meanwhile, according to the interval of the two actions of the three-way valve 2 and the volume of the measuring cylinder 6, the flow of the oil delivery pipe is obtained and the liquid production of the oil well is calculated; after the water content measuring instrument 8 stops working, the oil outlet pump 11 arranged in the oil outlet pipe 12 starts to work and pumps the crude oil in the measuring cylinder 6 to the main pipeline 1; when the lower liquid level meter 9 generates a signal, the power supply of the oil outlet pump 11 is turned off; since the oil outlet pump 11 has a reverse sealing function, the liquid in the main pipeline 1 cannot flow back; the utility model can cyclically and repeatedly measure the required values, so as to improve the measurement accuracy.

[0017] Finally, it should be noted that: the above examples are used to illustrate the technical scheme of the utility model and not to limit it; although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical scheme of the utility model, they should be covered in the technical scheme range of the utility model claimed to be protected.

Claims

1. An automatic oil and water measuring instrument for oil well production, characterized in that, Including main pipeline and controller, the main pipeline sets three-way valve, three-way valve communicates oil inlet pipe, oil inlet pipe communicates upper part of measuring cylinder, measuring cylinder sets upper liquid level instrument, lower liquid level instrument and water content measuring instrument, lower part of measuring cylinder communicates oil outlet pipe, the other end of oil outlet pipe communicates main pipeline, oil outlet pipe sets oil outlet pump.

2. The automatic oil well production and oil-water measuring instrument according to claim 1, characterized in that, The main pipeline is respectively provided with upper flange and lower flange at both ends.

3. The automatic oil well production and oil-water measuring instrument according to claim 1, characterized in that, The upper end of the measuring cylinder is provided with a check valve.

4. The automatic oil well production and oil-water measuring instrument according to claim 1, characterized in that, Supporting rods are arranged between the main pipeline and the measuring cylinder.

5. The automatic oil well production and oil-water measuring instrument according to claim 1, characterized in that, The measuring cylinder is provided with temperature sensors and pressure sensors.

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