Device for measuring influence of different conditions on heavy oil conveying of water ring

Abstract

The utility model discloses a device for measuring the influence of different conditions on heavy oil transportation of a water ring, which belongs to the technical field of pipeline transportation measurement and comprises a measuring pipeline, an oil phase circulating pipeline, a water phase circulating pipeline and a monitoring controller, and the measuring pipeline is made of transparent materials and is provided with a water ring generator; heavy oil and water are introduced into the oil phase circulation pipeline and the water phase circulation pipeline respectively, and after the heavy oil and the water form water ring conveying through the water ring generator, loops are formed after the heavy oil and the water are separated through the gas-liquid separator. And the monitoring controller can realize control of different working conditions and real-time monitoring of working condition parameters. The device is suitable for a water ring heavy oil conveying process, can quickly and accurately measure the influence of different oil-water ratios flowing into a pipeline on water ring heavy oil conveying and the influence of heavy oil and water at different flow speeds on water ring heavy oil conveying, and solves the stability problem of water ring heavy oil conveying. And theoretical support is provided for field practical application of the water ring conveying technology.

Description

Technical Field

[0001] The utility model is a device for measuring the influence of different conditions on the heavy oil transportation by water ring, specifically a measuring device proposed to realize the influence of the stability of heavy oil transportation by water ring under different conditions, belonging to the technical field of pipeline transportation measurement. Background Technique

[0002] At present, the use of pipeline technology to transport crude oil is the mainstream of this era. The superiority of pipeline transportation is incomparable to other transportation methods. When transporting heavy oil through pipelines, due to the high viscosity and poor fluidity of heavy oil, the energy consumption is high and the economy is poor when using traditional pipelines for transportation, bringing great challenges to heavy oil gathering and transportation. To reduce the energy consumption of heavy oil transportation, the commonly used transportation methods at present include heating transportation, adding low-viscosity olefins, oil product upgrading, etc. However, most of the above methods are difficult to significantly reduce the heavy oil transportation cost due to high costs or large amounts of additives used. Therefore, it is necessary to study a new transportation technology for heavy oil transportation to improve the transportation efficiency and reduce energy consumption at the same time.

[0003] The water ring transportation technology is a core flow transportation system in which water wraps heavy oil. By avoiding the contact between heavy oil and the wall surface, it can reduce the energy consumption during the heavy oil transportation process and can be used as an effective method to reduce the heavy oil transportation resistance. However, due to the large density difference between oil and water, during horizontal pipeline transportation, under the action of gravity, the water ring will become unstable and fall after a certain transportation distance, gradually changing from the initial annular flow to eccentric annular flow, which will cause the upper wall surface to contact the oil product and affect the drag reduction effect of the water ring heavy oil transportation technology. Therefore, improving the stability of the water ring is very important for enhancing the applicability of the water ring transportation heavy oil technology.

[0004] The existing research on improving the stability of the water ring mostly discusses from the optimization of the fluid flow mode in the pipeline. However, according to the occurrence mechanism of the water ring instability phenomenon, due to the existence of density difference, the improvement of the flow mode can only relatively delay the water ring instability phenomenon. If the pipeline wall surface can effectively retain the water ring and form a water film on the wall surface, the water ring will not quickly flow away due to its own gravity and heavy oil scouring, so as to ensure that the water ring is maintained above the heavy oil flow for a long time and isolate the contact between heavy oil and the pipe wall. Under this condition, by stabilizing the existence of the water ring, the direct resistance loss between the high-viscosity heavy oil and the pipeline wall surface is transformed into the relative movement between the pipe wall and water, and water and heavy oil. With the water ring as lubrication, it should be able to effectively reduce the heavy oil transportation resistance.

[0005] The utility model patent with the publication number CN107764981A discloses a visualization device and method for generating oil-water annular flow and measuring the liquid holdup rate. This device can form an oil-water annular flow with a water ring on the outside and heavy oil in the center during the cyclic transportation of oil-water two-phase. Then, based on the cross-sectional liquid holdup rate measuring device arranged at the rear end of the water ring generator device, through the switching control of valves, the measurement of the oil-water volume, and formula calculation, the liquid holdup rate parameter of the oil-water two-phase flow can be obtained. However, as we know, the liquid holdup rate refers to the proportion of the cross-sectional area of the liquid phase in the total cross-sectional area during the flow of water-gas two-phase. During the water ring transportation process, the liquid holdup rate parameter of the oil-water annular flow cannot effectively reflect the stability of the water ring transportation. In addition, since the cross-sectional liquid holdup rate measuring device for measuring the liquid holdup rate parameter is arranged at the rear end of the observation pipeline, it is impossible to accurately obtain the liquid holdup rate parameter of the current oil-water annular flow in the observation pipeline. At the same time, when measuring the liquid holdup rate parameter, it is also necessary to take samples for measurement after the valve switching. Not only is the measurement operation complex, but manual operation may also affect the accuracy of the measurement results.

[0006] Jing Jiaqiang et al. disclosed an experimental device for analyzing the flow pattern characteristics, resistance characteristics, and evaluating the drag reduction effect of heavy oil transported by a water ring in "Simulation of Drag Reduction Characteristics of Heavy Oil Transported by Water Ring in Horizontal Pipe" (Chemical Industry Progress, Vol. 40, No. 2, December 2021, pp. 635 - 641). The oil-water supply system of this device consists of an oil circuit and a water circuit. The oil in the oil storage tank in the oil circuit is pressurized by a residue oil pump and metered by a turbine flowmeter, and then enters the water ring generator and mixes with the water phase. The tap water in the water storage tank in the water circuit is pressurized by a centrifugal pump and metered by an electromagnetic flowmeter, and then enters the water ring generator and mixes with the oil phase. The oil-water two-phase contacts through the water ring generator and forms an annular flow pattern with the water ring wrapping outside the core oil flow. Subsequently, it passes through the downstream pressure difference measurement and flow pattern photography pipe segments in sequence. Finally, the test fluid flows into the oil-water separation tank for static separation, and the separated oil and water flow into their respective storage tanks through the oil outlet and water outlet respectively, realizing the cyclic flow of oil and water in the test pipeline. However, in this device, since there is also a downstream pressure difference measurement section between the water ring generator and the flow pattern photography pipe segment, when measuring the influence of heavy oil and water with different oil-water ratios and different flow rates on the water ring transportation of heavy oil, due to the influence of the pressure drop parameter, the water ring transportation state reflected in the flow pattern photography pipe segment cannot accurately reflect their influence relationship, and the accuracy of the measurement data cannot be guaranteed. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a device for measuring the influence of different conditions on the water ring transportation of heavy oil. This device is applicable to the process of water ring transportation of heavy oil, can quickly and accurately measure the influence of different oil-water ratios flowing into the pipeline on the water ring transportation of heavy oil, and the influence of heavy oil and water with different flow rates on the water ring transportation of heavy oil, solve the stability problem of water ring transportation of heavy oil, and provide theoretical support for the on-site practical application of water ring transportation technology.

[0008] The utility model is realized by the following technical solutions: A device for measuring the influence of different conditions on the heavy oil transportation by water ring includes a measuring pipeline, an oil phase circulation pipeline, a water phase circulation pipeline and a monitoring controller.

[0009] The measuring pipeline is horizontally arranged and made of transparent material. The measuring pipeline is provided with a water ring generator, and the mixture outlet of the measuring pipeline is connected to a gas-liquid separator.

[0010] The oil phase circulation pipeline includes a heavy oil storage tank, a gear pump, a first liquid flowmeter, a measuring pipeline and a gas-liquid separator connected in sequence. The heavy oil inlet of the measuring pipeline is connected to the first liquid flowmeter, and the oil outlet of the gas-liquid separator is connected to the heavy oil storage tank.

[0011] The water phase circulation pipeline includes a water storage tank, a water pump, a second liquid flowmeter, a measuring pipeline and a gas-liquid separator connected in sequence. The water inlet of the water ring generator on the measuring pipeline is connected to the second liquid flowmeter, and the water outlet of the gas-liquid separator is connected to the water storage tank.

[0012] At least one pressure sensor is arranged on the inner wall of the measuring pipeline. The pressure sensor, the gear pump, the first liquid flowmeter, the water pump and the second liquid flowmeter are respectively connected to the monitoring controller for signal connection.

[0013] The oil phase circulation pipeline further includes a first pressure gauge and a first ball valve arranged in sequence between the first liquid flowmeter and the heavy oil inlet of the measuring pipeline, and a second ball valve arranged between the oil outlet of the gas-liquid separator and the heavy oil storage tank. The first pressure gauge, the first ball valve and the second ball valve are respectively connected to the monitoring controller for signal connection.

[0014] The water ring generator is symmetrically provided with a first water inlet and a second water inlet. The first water inlet and the second water inlet are respectively connected to the second liquid flowmeter through pipelines. The water phase circulation pipeline further includes a third ball valve arranged on the pipeline between the first water inlet and the second liquid flowmeter, a fourth ball valve arranged on the pipeline between the second water inlet and the second liquid flowmeter, and a fifth ball valve arranged between the water outlet of the gas-liquid separator and the water storage tank. The third ball valve, the fourth ball valve and the fifth ball valve are respectively connected to the monitoring controller for signal connection.

[0015] The water phase circulation pipeline further includes a second pressure gauge arranged on the pipeline where the third ball valve is located, and a third pressure gauge arranged on the pipeline where the fourth ball valve is located. The second pressure gauge and the third pressure gauge are respectively connected to the monitoring controller for signal connection.

[0016] A sixth ball valve is arranged between the mixture outlet of the measuring pipeline and the gas-liquid separator. The sixth ball valve is connected to the monitoring controller for signal connection.

[0017] A first pressure sensor and a second pressure sensor are provided on the inner wall of the measurement pipeline. The first pressure sensor is correspondingly arranged at the terminal position of the water ring generator, and the second pressure sensor is correspondingly arranged at the outlet position of the measurement pipeline.

[0018] A recorder for recording the time of flow direction change is provided in the measurement pipeline, and the recorder is signal-connected to the monitoring controller.

[0019] The length of the measurement pipeline is 40 m.

[0020] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0021] (1) The structure of the present utility model is simple. By utilizing the cooperation of the water-phase oil transportation pipeline, the oil-phase oil transportation pipeline and various devices in the pipeline structure, the whole process of water ring transportation occurring under actual working conditions can be accurately simulated, and water and heavy oil can be recycled, saving resources.

[0022] (2) When simulating the water ring transportation working condition, the monitoring controller adopted by the present utility model can adjust the displacement of different gear pumps and water pumps, and record the water inlet flow rate of the water ring generator and the heavy oil flow rate entering the measurement pipeline, so as to obtain the relationship curve between different oil-water flow rate ratios and the water ring failure distance, as well as the relationship curve between different oil-water flow rates and the water ring failure distance, and provide specific guidance for water ring transportation of heavy oil on site.

[0023] (3) By arranging a first pressure sensor, a second pressure sensor and a recorder in the measurement pipeline, and combining with the monitoring controller, the present utility model can realize real-time monitoring of the whole measurement process, ensuring the accuracy of measurement. Among them, the pressure sensor can be used to measure and monitor the pressure change in the measurement pipeline, and is used to compare the pressures of water and heavy oil before and after the water ring occurs during the measurement process; the recorder is used to record the time from the generation of the water ring by the water ring generator to the failure of the water ring during the transportation of heavy oil by the water ring, that is, to record the time of relevant flow phase changes in the measurement pipeline, so as to further monitor the whole measurement process.

[0024] (4) Pressure gauges are respectively arranged in the water-phase oil transportation pipeline and the oil-phase oil transportation pipeline, which can realize the pressure monitoring of water and heavy oil in the pipeline, ensure that the pressure remains in a relatively stable state during the measurement process, avoid the influence of pressure fluctuation on the measurement accuracy, and at the same time, the measurement can also be selected to be carried out under the condition of stable pressure according to the pressure situation.

[0025] In summary, the present utility model provides a measuring device dedicated to simulating the working condition of heavy oil transportation by water ring, and by using this measuring device, the relationship curves between different oil-water flow rate ratios and the water ring failure distance, as well as the relationship curves between different oil-water flow rates and the water ring failure distance can be obtained quickly and accurately. Thus, the stability problem of heavy oil transportation by water ring can be solved, and theoretical support can be provided for the on-site practical application of the water ring transportation technology. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the device of the present utility model.

[0027] Figure 2 It is a schematic structural diagram of the water ring generator of the present utility model.

[0028] Figure 3 It is a schematic connection diagram of the monitoring controller of the present utility model.

[0029] Figure 4 It is a logic control diagram of the control method of the present utility model.

[0030] Figure 5 It is the relationship curve between different oil-water flow rate ratios and the water ring failure distance.

[0031] Figure 6 It is the relationship curve between different oil-water flow rates and the water ring failure distance.

[0032] Wherein, 1 - measuring pipeline, 2 - heavy oil inlet, 3 - mixture outlet, 4 - water ring generator, 5 - water ring generation channel, 6 - first water inlet, 7 - second water inlet, 8 - oil inlet, 9 - gas-liquid separator, 10 - oil outlet, 11 - water outlet, 12 - monitoring controller, 13 - heavy oil storage tank, 14 - gear pump, 15 - first liquid flowmeter, 16 - water storage tank, 17 - water pump, 18 - second liquid flowmeter, 19 - first pressure gauge, 20 - second pressure gauge, 21 - third pressure gauge, 22 - first ball valve, 23 - second ball valve, 24 - third ball valve, 25 - fourth ball valve, 26 - fifth ball valve, 27 - sixth ball valve, 28 - first pressure sensor, 29 - second pressure sensor, 30 - recorder, 31 - base. Detailed Embodiments

[0033] Hereinafter, the utility model purpose, technical solutions and beneficial effects of the present utility model will be further described in detail.

[0034] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further descriptions of the claimed present utility model. Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0035] The present utility model aims to solve the problem that current measuring devices cannot accurately measure the influence of different working conditions on the stability of water ring conveying heavy oil. A measuring device is proposed that can simulate and realize the influence of different oil-water ratios and different oil-water flow rates on water ring conveying heavy oil. By monitoring different working condition parameters during the measurement process, the measurement accuracy can be improved. Specifically, the present utility model can simulate different working conditions of water ring heavy oil conveying and realize real-time monitoring of different working condition parameters, and at the same time realize the control of different working conditions, such as adjusting the ratio and flow rate of water and heavy oil entering the measuring pipeline 1. The water ring failure distance under the current working condition during the measurement process is obtained by using the measuring pipeline 1, so as to obtain the relationship curve between different oil-water ratios and the water ring failure distance, and the relationship curve between different oil-water flow rates and the water ring failure distance. Thus, it can provide theoretical support for the on-site stable operation of water ring conveying.

[0036] Embodiment 1:

[0037] This embodiment is a device for measuring the influence of different conditions on water ring conveying heavy oil.

[0038] As can be seen from Figure 1 the shown structure, the device mainly consists of a measuring pipeline 1, a gas-liquid separator 9, an oil phase circulation pipeline, a water phase circulation pipeline, and a monitoring controller 12. The measuring pipeline 1 and the gas-liquid separator 9 are both arranged in the oil phase circulation pipeline and the water phase circulation pipeline. Among them, the oil phase circulation pipeline includes a heavy oil storage tank 13, a gear pump 14, a first liquid flowmeter 15, a first pressure gauge 19, a first ball valve 22, the measuring pipeline 1, a sixth ball valve 27, the gas-liquid separator 9, and a second ball valve 23, and finally is connected back to the heavy oil storage tank 13. The water phase circulation pipeline includes a water storage tank 16, a water pump 17, a second liquid flowmeter 18, a second pressure gauge 20 / a third pressure gauge 21, a third ball valve 24 / a fourth ball valve 25, the measuring pipeline 1, a sixth ball valve 27, the gas-liquid separator 9, and a fifth ball valve 26, and finally is connected back to the water storage tank 16. Among them, the pipeline where the second pressure gauge 20 and the third ball valve 24 are located is arranged in parallel with the pipeline where the third pressure gauge 21 and the fourth ball valve 25 are located.

[0039] In this embodiment, the measuring pipeline 1 is made of a transparent material, such as transparent acrylic or glass, which is convenient for observing the formation of the water ring inside the pipe. At the same time, a tape measure can be used to measure the water ring failure distance inside the pipe. A base 31 is provided at the bottom of the measuring pipeline 1 to ensure that the measuring pipeline 1 is horizontally set for measurement. A water ring generator 4 is arranged inside the measuring pipeline 1. The structure of the water ring generator 4 is as Figure 2 shown. The water ring generator 4 includes a water ring generating channel 5 and a first water inlet 6, a second water inlet 7, and an oil inlet 8 arranged on the water ring generating channel 5. The oil inlet 8 is connected to the heavy oil inlet 2 of the measuring pipeline 1, and the first water inlet 6 and the second water inlet 7 are symmetrically arranged.

[0040] When simulating the water ring transportation working condition, the heavy oil in the heavy oil storage tank 13 sequentially passes through the gear pump 14, the first liquid flowmeter 15, the first ball valve 22, the heavy oil inlet 2, and the oil inlet 8 to enter the water ring generating channel 5. The water in the water storage tank 16 sequentially passes through the water pump 17 and the second liquid flowmeter 18, and then one part passes through the third ball valve 24 and the first water inlet 6 to enter the water ring generating channel 5, and the other part passes through the fourth ball valve 25 and the second water inlet 7 to enter the water ring generating channel 5. After the heavy oil and water pass through the water ring generating channel 5, a water ring is formed at the terminal of the water ring generating channel 5. After the water ring transportation maintains a certain distance, the water ring fails, and the heavy oil and water are then sent out through the mixture outlet 3 and sent to the gas-liquid separator 9 through the sixth ball valve 27. The gas-liquid separator 9 is used to separate the heavy oil and water. The separated heavy oil returns to the heavy oil storage tank 13 through the oil outlet 10 and the second ball valve 23 of the gas-liquid separator 9, forming the recycling of the heavy oil. The separated water returns to the water storage tank 16 through the water outlet 11 and the fifth ball valve 26 of the gas-liquid separator 9, forming the recycling of the water.

[0041] In a specific embodiment, the length of the measurement pipeline 1 can be set to 40 m, the length of the water ring generating channel 5 is set as required, and the water inflow rates of the first water inlet 6 and the second water inlet 7 and the heavy oil flow rate at the heavy oil inlet 2 are respectively controlled. Since the measurement pipeline 1 is made of a transparent material, at this time, through observation, the water ring failure distance in the measurement pipeline 1 can be measured using a tape measure.

[0042] In this embodiment, through the monitoring controller 12, the control of different working conditions and the real-time monitoring of working condition parameters can also be realized, such as Figure 3As shown in the figure, the monitoring controller 12 can be connected to multiple devices of this device, such as the gear pump 14, the water pump 17, the liquid flowmeter, the ball valve, the pressure gauge, the pressure sensor, the recorder, etc. Specifically, by respectively connecting the gear pump 14, the water pump 17, the first ball valve 22, the second ball valve 23, the third ball valve 24, the fourth ball valve 25, the fifth ball valve 26 and the sixth ball valve 27 to the monitoring controller 12 for signal connection, the control system of the monitoring controller 12 can be used to switch each ball valve, realize the simulation of the working condition of water ring transporting heavy oil, and adjust the displacement of the gear pump 14 and the water pump 17 to realize the measurement under different working conditions. In addition, the data acquisition system of the monitoring controller 12 can also receive the data of the first liquid flowmeter 15, the second liquid flowmeter 18, the first pressure gauge 19, the second pressure gauge 20 and the third pressure gauge 21, which is used to monitor the parameter data in the measurement process in real time to ensure the measurement accuracy. At the same time, in this embodiment, a first pressure sensor 28, a second pressure sensor 29 and a recorder 30 are arranged in the measurement pipeline 1. The first pressure sensor 28 is correspondingly arranged at the terminal position of the water ring generator 4, and the second pressure sensor 29 is correspondingly arranged at the outlet position of the measurement pipeline 1, which is used to transmit the pressure in the measurement pipeline 1 to the monitoring controller 12 in real time. The recorder 30 is used to record the flow phase change time in the measurement process and transmit it to the monitoring controller 12 in real time, which can further ensure the controllability of the measurement process and improve the measurement accuracy.

[0043] Embodiment 2:

[0044] This embodiment is the specific process of measuring water ring transporting heavy oil under different conditions by using the device described in Embodiment 1.

[0045] See Figure 4 As shown in the figure, the specific steps are as follows:

[0046] Step 1, simulate the working condition of water ring transporting heavy oil

[0047] First, close all ball valves, and then sequentially open the gear pump 14, the first ball valve 22, the sixth ball valve 27, the second ball valve 23, the third ball valve 24, the fourth ball valve 25, the fifth ball valve 26, and the water pump 17; the heavy oil in the heavy oil storage tank 13 is pressurized by the gear pump 14, metered by the first liquid flowmeter 15, and after the pressure is measured by the first pressure gauge 19, it enters the water ring generation channel 5 from the heavy oil inlet 2. The water in the water storage tank 16 is pressurized by the water pump 17, metered by the second liquid flowmeter 18, and after the pressure is measured by the second pressure gauge 20 and the third pressure gauge 21 respectively, it enters the water ring generation channel 5 from the first water inlet 6 and the second water inlet 7. After the water and heavy oil form a water ring for transportation, they flow from right to left in the measurement pipeline 1. After the water ring fails, they finally flow out from the mixture outlet 3 to the gas-liquid separator 9 for separation. The separated water flows into the water storage tank 16, and the separated heavy oil flows into the heavy oil storage tank 13 for recycling. At the same time, record and monitor the working condition parameters during the water ring transportation process.

[0048] Step 2, measure the influence of different oil-water flow rate ratios entering the measurement pipeline 1 on the water ring transportation of heavy oil

[0049] On the premise of keeping the pressure stable in each section of the pipeline, adjust the displacement of the gear pump 14 so that the flow rate of heavy oil in the pipeline is 2 m / s, adjust the displacement of the water pump 17 so that the flow rate of water entering the first water inlet 6 and the second water inlet 7 is 1.5 m / s, adjust the opening degrees of the third ball valve 24 and the fourth ball valve 25 to be the same, and keep the flow rates of water entering the first water inlet 6 and the second water inlet 7 the same. After the water ring generator 4 generates a water ring, record the time from the water ring transportation of heavy oil to the failure of the water ring through the recorder 30.

[0050] Repeat the above steps. By controlling the displacement of the water pump 17, repeat the measurement of the flow rates of heavy oil and water entering the measurement pipeline 1 according to the ratios of 1:1, 1:1.25, 1:2, 1:3, and 1:4 respectively, and record the measurement results. Finally, obtain the relationship curve between different heavy oil and water ratios and the water ring failure distance, as Figure 5 shown.

[0051] As Figure 5 shown, under the condition that the flow rate of heavy oil is 2 m / s, as the heavy water ratio gradually increases, the water ring failure distance generally shows an increasing trend; but it is most suitable under the condition that the heavy oil and water ratio is 1:3. Beyond this ratio, the growth trend of the water ring failure distance slows down. Although the higher the ratio, the farther the failure distance, but from the perspective of economic benefits, the purpose of the pipeline is to transport heavy oil. It can be seen that under the condition that the flow rate of heavy oil is 2 m / s, the oil-water ratio of 1:3 is a more suitable value for water ring transportation.

[0052] Step 3, measure the influence of water and heavy oil with different flow rates entering the measurement pipeline 1 on the water ring transportation of heavy oil

[0053] On the premise of keeping the pressure of each section of the pipeline stable, adjust the displacement of the gear pump 14 so that the flow rate of heavy oil in the pipeline is 1 m / s, adjust the displacement of the water pump 17 so that the flow rate of water entering the first water inlet 6 and the second water inlet 7 is 3 m / s, adjust the opening degrees of the third ball valve 24 and the fourth ball valve 25 to be the same, and keep the flow rates of water entering the first water inlet 6 and the second water inlet 7 the same. After the water ring generator 4 generates a water ring, record the time from when the water ring transports heavy oil until the water ring fails through the recorder 30.

[0054] Repeat the above steps. By controlling the displacements of the gear pump 14 and the water pump 17, adjust the flow rates of heavy oil and water entering the measurement pipeline 1 according to the oil-water ratio of 1:3, that is: heavy oil 1.5 m / s, water 4.5 m / s; heavy oil 2 m / s, water 6 m / s; heavy oil 2.5 m / s, water 7.5 m / s; heavy oil 3 m / s, water 9 m / s; heavy oil 4 m / s, water 12 m / s. Conduct repeated measurements and record the measurement results. Finally, obtain the relationship curve between water and heavy oil with different flow rates and the water ring failure distance. For details, see Figure 6 。

[0055] As Figure 6 shown, on the condition of keeping the oil-water ratio at 1:3, as the flow rates of heavy oil and water gradually increase, the water ring failure distance generally shows an increasing trend; but it is most suitable under the conditions that the flow rates of heavy oil and water are 3 m / s and 9 m / s respectively. Beyond this ratio, the growth trend of the water ring failure distance slows down. It can be seen that under the condition of an oil-water ratio of 1:3, when the flow rates of heavy oil and water are controlled at 3 m / s and 9 m / s respectively, the stability of water ring transportation can be effectively guaranteed.

[0056] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for measuring the influence of different conditions on the water ring transportation of heavy oil, characterized by: It includes a measuring pipeline (1), an oil phase circulation pipeline, a water phase circulation pipeline and a monitoring controller (12), The measuring pipeline (1) is arranged horizontally and is made of a transparent material. The measuring pipeline (1) is provided with a water ring generator (4). The mixture outlet (3) of the measuring pipeline (1) is connected to a gas-liquid separator (9); The oil phase circulation pipeline comprises a heavy oil storage tank (13), a gear pump (14), a first liquid flow meter (15), a measuring pipeline (1) and a gas-liquid separator (9) which are connected in sequence, the heavy oil inlet (2) of the measuring pipeline (1) being connected to the first liquid flow meter (15), and the oil outlet (10) of the gas-liquid separator (9) being connected to the heavy oil storage tank (13); The water phase circulation pipeline comprises a water storage tank (16), a water pump (17), a second liquid flow meter (18), a measuring pipeline (1) and a gas-liquid separator (9) which are connected in sequence, wherein the water inlet of the water ring generator (4) on the measuring pipeline (1) is connected to the second liquid flow meter (18), and the water outlet (11) of the gas-liquid separator (9) is connected to the water storage tank (16); At least one pressure sensor is provided on the inner wall of the measuring pipe (1), and the pressure sensor, the gear pump (14), the first liquid flow meter (15), the water pump (17) and the second liquid flow meter (18) are respectively connected to the monitoring controller (12) for signals.

2. The device according to claim 1, characterized in that: The oil phase circulation pipeline further comprises a first pressure gauge (19) and a first ball valve (22) which are arranged in sequence between the first liquid flow meter (15) and the heavy oil inlet (2) of the measuring pipeline (1), and a second ball valve (23) which is arranged between the oil outlet (10) of the gas-liquid separator (9) and the heavy oil storage tank (13); the first pressure gauge (19), the first ball valve (22) and the second ball valve (23) are respectively connected to the monitoring controller (12) for signal communication.

3. The device according to claim 1, characterized in that: The water ring generator (4) is symmetrically provided with a first water inlet (6) and a second water inlet (7), the first water inlet (6) and the second water inlet (7) are respectively connected to a second liquid flow meter (18) through pipelines, the water phase circulation pipeline also includes a third ball valve (24) provided on the pipeline between the first water inlet (6) and the second liquid flow meter (18), a fourth ball valve (25) provided on the pipeline between the second water inlet (7) and the second liquid flow meter (18), and a fifth ball valve (26) provided between the water outlet (11) of the gas-liquid separator (9) and the water storage tank (16), the third ball valve (24), the fourth ball valve (25) and the fifth ball valve (26) are respectively connected to the monitoring controller (12) for signal connection.

4. The device according to claim 3, characterized in that: The water phase circulation pipeline further comprises a second pressure gauge (20) provided on the pipeline where the third ball valve (24) is located, and a third pressure gauge (21) provided on the pipeline where the fourth ball valve (25) is located, wherein the second pressure gauge (20) and the third pressure gauge (21) are respectively connected to the monitoring controller (12) for signal transmission.

5. The device according to claim 1, characterized in that: A sixth ball valve (27) is provided between the mixture outlet (3) of the measuring pipeline (1) and the gas-liquid separator (9), and the sixth ball valve (27) is signal-connected to the monitoring controller (12).

6. The device according to claim 1, characterized in that: A first pressure sensor (28) and a second pressure sensor (29) are provided on the inner wall of the measuring pipeline (1); the first pressure sensor (28) is provided at a corresponding terminal position of the water ring generator (4), and the second pressure sensor (29) is provided at a corresponding outlet position of the measuring pipeline (1).

7. The device according to claim 1, characterized in that: A recorder (30) for recording flow direction change time is provided in the measuring pipeline (1), and the recorder (30) is signal-connected to the monitoring controller (12).

8. The device according to claim 1, characterized in that: The length of the measuring pipeline (1) is 40 m.

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