CN1251160C - Split-phase mixed circulating oil gas and water multi-phase flow analog experimental devices - Google Patents

Abstract

The invention discloses a phase-separation mixed circulation type oil-gas-water multiphase flow simulation experiment device, comprising a water tank, an oil tank, a gas source, an oil-water separation device, an experimental pipeline and its support, an oil-gas mixing device, an oil-water mixing device, a control device, and a water tank The oil-water mixing device is connected to the oil-water mixing device through the output water pump, the oil tank and the gas source are respectively connected to the oil-gas mixing device through the output oil pump and the gas mass flow controller, the oil-gas mixing device is connected to the oil-water mixing device, the oil-water mixing device is connected to the inlet of the experimental pipeline, and the outlet of the experimental pipeline is connected to the The oil-water separation devices are connected, and the oil-water separation devices are respectively connected with the oil tank and the water tank through the oil discharge port, the water discharge port, the oil pump and the water pump. The device can not only simulate the flow state of different proportions of oil, gas, and water mixed in the natural state, but also simulate the flow state of the fluid in the vertical state and the horizontal state. At the same time, the water and oil used are both circulating, so It provides convenient experimental conditions for researchers' research work.

Description

Phase-separation mixed circulation type oil-gas-water multiphase flow simulation experiment device

technical field

The invention relates to a circulating multiphase flow simulation experiment device for studying the flow characteristics of oil, gas and water multiphase fluids.

Background technique

The fluids used in the work of existing experimental devices are usually three-phase oil, gas, and water, or two phases of which are evenly mixed. However, the fluids encountered in practice are mixed fluids in a natural state. There are great differences in the fluids, so there are not only large errors in the study of mixed fluids with existing devices, but also the research scope is limited to a certain extent.

Contents of the invention

Aiming at the deficiencies in the prior art, the object of the present invention is to provide a separator that can reproduce the natural mixed state of oil, gas, water or two phases, can simulate various flow states of multiphase mixed fluid, and can work cyclically. Phase mixing cycle multiphase flow simulation experiment device.

In order to achieve the above object, the phase-separation mixing circulation type oil-gas-water multiphase flow simulation experiment device of the present invention includes a water tank, an oil tank, a gas source, an oil-water separation device, an experimental pipeline and its support, an oil-gas mixing device, an oil-water mixing device, and a control device. The water tank is connected with an output water pump and an input water pump. The outlet of the output water pump is connected with the inlet of the oil-water mixing device. The oil tank is connected with an output oil pump and an input oil pump. The outlet of the output oil pump is connected with the inlet of the oil-gas mixing device. The inlet of the oil-gas mixing device is connected, the outlet of the oil-gas mixing device is connected to the inlet of the oil-water mixing device, the outlet of the oil-water mixing device is connected to the inlet of the experimental pipeline, and the outlet of the experimental pipeline is connected to the inlet of the oil-water separation device. The outlet, wherein the oil discharge port is connected to the oil tank through the input oil pump, and the drain port is connected to the water tank through the input water pump. The control device controls the work of the water pump, the oil pump and the gas mass flow controller.

Further, the oil-water separation device is composed of at least two stages of oil-water separators. The oil-water separator is vertically arranged in a cylindrical shape with an open opening at its upper end. A drain is provided under each stage of the separator, and all the drains are concentrated Then connect to the water tank through the input water pump or connect to the water tank after passing through the input water pump separately, and the oil discharge port is arranged on the last stage separator.

Further, the lower-stage separator in the oil-water separation device is provided with a baffle at the input port connecting with the upper-stage separator.

Further, the separator is provided with at least two oil discharge ports at different height positions.

Further, a gas and liquid pre-separation device is provided between the outlet of the experimental pipeline and the inlet of the oil-water separation device.

Further, the gas and liquid pre-separation device is a multi-stage pipeline separation device, which is composed of a horizontal liquid tank and a vertical pipe. The two ends of the horizontal liquid tank are respectively connected with the pipeline and the oil-water separation device. The tubes are fixed at an appropriate distance along the length of the horizontal liquid tank and are respectively connected to the horizontal liquid tank. The upper end of the vertical tube is connected to a pipe, and the other end of the pipe is inserted into the separator through the opening provided at the upper end of the first-stage separator. Appropriate depth.

Further, the outlet of the output oil pump is connected with an electromagnetic flowmeter, and the outlet of the output water pump is connected with a waist wheel flowmeter.

Further, the gas source is composed of an air compressor and a gas filter.

Further, the experimental pipeline includes a horizontal section and a vertical section, wherein the vertical section includes two parts below the horizontal section and above the horizontal section.

Further, both the oil-water mixing device and the oil-gas mixing device are three-way pipe joints.

Further, both the oil-water mixing device and the oil-gas mixing device are jet pumps.

Further, the control device controls the operation of the water pump and the oil pump through frequency converters.

Further, the experimental pipeline is made of transparent material.

The simulation device of the present invention can not only simulate the flow state of different proportions of oil, gas, and water mixed in the natural state, but also simulate the flow state of the fluid in the vertical state and the horizontal state, and at the same time, the water and oil used are both circulating , thus providing convenient experimental conditions for researchers' research work.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a partial schematic diagram of direction A in Fig. 1;

Fig. 3 is a schematic view of the D direction in Fig. 1 and its connection with the oil-water separation device after deployment.

Detailed ways

As shown in Figure 1, the first jet pump 4 is an oil-gas mixing device, the second jet pump 4' is an oil-water mixing device, the outlet of the water tank 1 is connected to the output water pump 2 and the electromagnetic flowmeter 3, and the outlet of the oil tank 17 is connected to the output oil pump 16 and the waist wheel Flowmeter 15, the gas source is composed of air compressor 18 and gas filter 19, the outlet of air compressor 18 is connected to air filter 19 and gas mass flow controller 20, the outlet of waist wheel flowmeter 15, and the outlet of gas mass flow controller 20 They are respectively connected to the inlet of the first jet pump 4, the outlet of the first jet pump 4 and the outlet of the electromagnetic flowmeter 3 are respectively connected to the inlet of the second jet pump 4', and the outlet of the second jet pump 4' is connected to the experimental pipeline 5. The pipe 5 is supported on supports 6 . Both the first jet pump 4 and the second jet pump 4' are three-way pipe joints, and the experimental pipe 5 is made of transparent material. The outlet of the pipeline 5 is connected to the first-stage oil-water separator 13 after passing through the gas and liquid pre-separator. The gas and liquid pre-separator consists of a horizontal liquid tank 9 and three vertical pipes 24, 25, 26 arranged on it (see Figure 3) The upper ends of the vertical pipes 24, 25, 26 are introduced into the first-stage oil-water separator 13 through the pipeline 8, and the first-stage oil-water separator 13 is connected with the second-stage oil-water separator 10 through the pipeline 12, and the second-stage oil-water separator 10 The oil discharge port on the top is connected to the oil tank 17 through the input oil pump 7, and the discharge ports on the two-stage oil-water separator are respectively connected to the water tank 1 through the input water pump 14.

As shown in FIG. 2 , the experimental pipeline 5 has a vertical section and a horizontal section 53 , and the vertical section includes a part 51 higher than the horizontal section and a part 52 lower than the horizontal section.

As shown in Figure 3, the horizontal liquid tank 9 in the gas-liquid pre-separator is supported on the bracket 6, and three vertical pipes 24, 25, 26 are arranged at appropriate distances, and the outlet of the pipeline 8 extends into the first stage oil-water separator 13 appropriately. Depth, the first-stage oil-water separator 13 is connected to the second-stage oil-water separator 10 through the pipeline 12, and the second-stage oil-water separator 10 is provided with a baffle plate 11 matching the inlet of the pipeline 12. Both the first-stage oil-water separator 13 and the second-stage oil-water separator 10 are cylindrical, and the second-stage oil-water separator 10 is provided with two oil outlets 21 and 22 at different heights. The drain port 23 on the device is all provided with its lower part. According to different actual needs, the second-stage oil-water separator 10 can also be provided with more than two oil discharge ports at different heights.

When working, the control device (not shown in the figure) controls the water pump 2, the oil pump 16, and the gas mass flow controller 20 to work respectively. When it is necessary to simulate the mixed state of oil and water, start the water pump 2 and the oil pump 16. When it is necessary to simulate When oil, gas, and water are in a three-phase mixed state, the water pump 2, the oil pump 16, and the gas mass flow controller 20 are started simultaneously. Oil and gas are naturally mixed in the first jet pump 4 , and the oil-gas mixture output from the first jet pump 4 is mixed with water in the second jet pump 4 and finally input into the experimental pipeline 5 . After the mixed liquid passes through the experimental pipeline 5, it enters the gas-liquid pre-separator. When the mixed liquid contains gas, the gas is first separated and separated from the vertical pipes 24, 25, 26 in the pre-separator, and discharged from the outlet of the pipeline 8 At the same time, the liquid carried out by the gas flows into the first-stage separator 13. By adjusting the number of vertical pipes on the horizontal liquid tank 9, most of the gas can be discharged from the pre-separator to prevent it from being mixed with the oil-water mixture. They enter the first-stage oil-water separator together, which affects the smooth separation of oil and water. When there is no gas in the mixed liquid, oil and water can be pre-separated in the gas-liquid pre-separator, and part of the oil can enter the oil-water from the pre-separator Splitter. After the oil and water in the two-stage oil-water separator accumulate to a certain amount, the controller starts the oil pump 7 and the water pump 14 to discharge the separated oil and water into the oil tank 17 and the water tank 1 respectively. Arrow B in the figure is the direction of liquid flow, and arrow C is the direction of gas discharge.

When working, the control device changes the working parameters of the oil pump 16 and the water pump 2 through frequency converters, and at the same time adjusts the working state of the gas mass flow controller 20 to achieve the purpose of adjusting the proportion of oil, gas and water in the mixed liquid.

Claims (13)

1. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation, it is characterized in that, comprise water tank, fuel tank, source of the gas, oily-water seperating equipment, experimental channel and support thereof, oil gas mixing unit, oil-water mixer, control device, be connected to output water pump and input water pump on the water tank, wherein exporting exit of pump links to each other with the oil-water mixer import, be connected to output oil pump and input oil pump on the fuel tank, the outlet of output oil pump links to each other with the oil gas mixing unit import, source of the gas links to each other with the oil gas mixing unit import by the gas mass flow amount controller, the oil gas mixing unit outlet links to each other with the oil-water mixer import, the oil-water mixer outlet connects the experimental channel import, the experimental channel outlet is joined with the oily-water seperating equipment import, be respectively arranged with oil on the oily-water seperating equipment, water, the gas escape hole, wherein oil drain out links to each other with fuel tank through the input oil pump, freeing port links to each other with water tank through the input water pump, control device control water pump, oil pump, the work of gas mass flow amount controller.

2. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 1, it is characterized in that, described oily-water seperating equipment is made of two-stage oil-water separator at least, this oil-water separator is vertically disposed tubular, its upper end has opening port, every grade of separation vessel below is provided with freeing port, and all freeing port are concentrated after described input water pump links to each other with described water tank or link to each other with water tank after importing water pump separately separately, and described oil drain out is arranged on the afterbody separation vessel.

3. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 2 is characterized in that, the next stage separation vessel is provided with baffle plate at the place, input port that joins with the upper level separation vessel in the described oily-water seperating equipment.

4. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 3 is characterized in that, is provided with at least two oil drain outs in the differing heights position on the described separation vessel.

5. as the arbitrary described phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation of claim 1-4, it is characterized in that, be provided with gas, liquid pre-separate device between described experimental channel outlet and the described oily-water seperating equipment import.

6. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 5, it is characterized in that, described gas, the liquid pre-separate device is multistage duct type tripping device, constitute by horizontal liquid case and vertical tube, horizontal liquid case two ends join with described pipeline and oily-water seperating equipment respectively, vertical tube more than two is at interval suitably apart from fixing along horizontal liquid case length direction and being connected with horizontal liquid case respectively, the vertical tube upper end is communicated with a pipeline, and this pipeline other end inserts this separation vessel appropriate depth by the opening port that described first order separation vessel upper end is provided with.

7. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 6 is characterized in that, described output oil pump outlet is connected to electromagnetic flowmeter, and described output exit of pump is connected to rotz flowmeter.

8. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 7 is characterized in that described source of the gas is made of air compressor and gas filter.

9. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 8 is characterized in that described experimental channel comprises horizontal segment, vertical section, and wherein vertical section comprises and is lower than horizontal segment and is higher than horizontal segment two parts.

10. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 9 is characterized in that described oil-water mixer and described oil gas mixing unit are the three-way pipeline joint.

11. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 10 is characterized in that described oil-water mixer and described oil gas mixing unit are ejector.

12. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 10 is characterized in that, described control device is by the work of described water pump of Frequency Converter Control and oil pump.

13. phase-splitting mixing circulation formula oil gas water multiphase analogue experiment installation as claimed in claim 9 is characterized in that described experimental channel is made by transparent material.

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