CN211477945U - Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil - Google Patents
Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil Download PDFInfo
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- CN211477945U CN211477945U CN202020189332.XU CN202020189332U CN211477945U CN 211477945 U CN211477945 U CN 211477945U CN 202020189332 U CN202020189332 U CN 202020189332U CN 211477945 U CN211477945 U CN 211477945U
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Abstract
The utility model discloses a wax-containing crude oil wax deposition characteristic and pipe flow characteristic simulation experiment device, which relates to the technical field of oil physical characteristic test equipment, and comprises a loop formed by sequentially connecting an oil storage tank, a variable frequency oil pump, a test section and a flowmeter end to end, wherein the oil storage tank and the test section are respectively positioned in different constant temperature water bath tanks, the test section is formed by connecting a plurality of transparent organic glass pipes in series, and each transparent organic glass pipe is connected in a detachable way, so that the condition that deposition changes along with the length of a pipeline can be measured; the experimental device also comprises a camera, wherein the camera is opposite to the test section and can record the deposition change process of the test section.
Description
Technical Field
The utility model relates to an oil physical properties test equipment technical field specifically is a wax-containing crude oil wax deposition characteristic and pipe flow characteristic simulation experiment device.
Background
Most of crude oil produced in China is congealable highly viscous crude oil, which is crude oil with high wax content and is often called wax-containing crude oil. When the temperature of crude oil is high, paraffin in the crude oil is in a molten state, and when the heat loss temperature of the crude oil is reduced, solid-phase substances mainly containing paraffin are separated out from the crude oil and crystallized, so that the apparent viscosity of the crude oil is increased. During the transportation process of the wax-containing crude oil, phenomena such as wax precipitation, deposition and even blockage generally exist, and the transportation capacity and efficiency of the pipeline are greatly influenced. The wax deposition is influenced by a plurality of factors which influence each other, and the factors such as temperature, flow rate, running time and the like are generally considered to have more important influence on the wax deposition.
The Chinese application patent CN201820416138 provides an experimental loop device for wax deposition testing of wax-containing crude oil, which comprises a circulating loop consisting of an oil tank, a peristaltic pump, a testing section and a reference section which are connected end to end. The test section is formed by connecting a plurality of test tubes in parallel and is positioned in a water bath, the deposition condition is indirectly reflected through the pressure drop of the inlet and the outlet of the test tubes, and meanwhile, the deposition condition can be directly checked by detaching the test tubes after the experiment is finished. However, the device has many problems in use, for example, the test tube is a single section, after being disassembled, the test tube is limited by the tube diameter of the pipeline, only the deposition condition near the tube opening can be checked, the deposition change rule along the length of the pipeline is difficult to master, and meanwhile, the deposition change in the experimental process cannot be recorded, so that the data obtained by single simulation is limited, and the experimental study is not facilitated; in addition, the equipment is difficult to use, firstly, the oil in the pipeline is difficult to drain out before the test tube is disassembled, and the flange surface and even a water bath tank are often polluted by oil leakage during disassembly; secondly, the pipeline can be washd through medium circulation such as high temperature oil, water after the device finishes using, and these media can remain on the pipeline inner wall, and final corrosion pipeline or self deteriorate adsorb on the pipe wall and lead to appearing impurity in the pipeline, influence next use.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a wax-containing crude oil wax deposition characteristic and pipe flow characteristic simulation experiment device.
A wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil comprises a loop formed by sequentially connecting an oil storage tank, a variable-frequency oil pump, a testing section and a flowmeter end to end, wherein the oil storage tank and the testing section are respectively positioned in different constant-temperature water baths and used for respectively adjusting the temperature of the oil storage tank and the temperature of the testing section, the testing section is formed by connecting a plurality of transparent organic glass pipes in series, and the transparent organic glass pipes are detachably connected; the experimental device also comprises a camera, wherein the camera is opposite to the test section and is used for recording the deposition change process of the test section.
Preferably, this experimental apparatus still includes the air compressor machine, and the export of air compressor machine and frequency conversion oil pump outlet pipeline intercommunication still are connected with the evacuation pipe on the oil storage tank for the replacement, sweep the pipeline.
Preferably, the transparent organic glass tubes in the test section have different tube diameters and are used for simulating the deposition condition in the reducing process.
Preferably, many organic glass pipe diameters of test section are the same for the deposit condition of simulation with the different positions of pipe diameter learns the deposit condition along with pipeline length's change.
Preferably, the constant temperature water bath that the test section place also adopts transparent organic glass to make for the camera setting can shoot the deposition process of test section outside the constant temperature water bath.
Preferably, the experimental device further comprises a data receiver and a computer, wherein the data receiver is connected with at least the computer and the camera and is used for receiving and recording data.
Compared with the prior art, the utility model discloses beneficial effect is:
(1) the test section is formed by connecting a plurality of transparent organic glass tubes in series, and each section is connected in a detachable mode, so that the deposition condition near each section of inlet and outlet can be observed after disassembly, the deposition change rule along the length of the pipeline can be known by comparing the plurality of sections of inlet and outlet and respectively metering the deposits of each section, and meanwhile, if the pipe diameter of each section is changed, the deposition conditions of each section under different flow rates (the total flow of the series pipeline is the same, the pipe diameter is larger, and the flow rate is lower) can be known.
(2) The test section adopts a transparent organic glass tube, and because the transparent organic glass tube is made of transparent materials, the deposition condition of the tube wall can be checked from the outside, and meanwhile, the whole deposition change process can be recorded after a camera is added, so that the change rule of deposition along with time can be known.
(3) After the air compressor is added, the pipeline can be filled with gas to replace crude oil after circulation is stopped, and meanwhile, the device can be inflated and air-dried after being cleaned, so that residual media on the wall of the pipeline can be cleaned, and the device is convenient to use.
Drawings
FIG. 1 is a general schematic view of the present invention;
FIG. 2 is a schematic structural diagram of a constant temperature water bath and a test section;
FIG. 3 is a schematic view of a connection sleeve connection;
FIG. 4 is a schematic view of the structure of the elastic waterproof jacket;
FIG. 5 is a schematic view of a connection hose connection;
in the figure, 1, an oil storage tank; 2. a variable frequency oil pump; 3. a testing section; 4. a flow meter; 5. constant temperature water; 6. a temperature sensor; 7. a stirrer; 8. a constant temperature water bath; 9. a connecting hose; 10. a pressure sensor; 11. a camera; 12. an air compressor; 13. an emptying pipe; 14. a data receiver 15, a computer;
31. a transparent organic glass tube; 32. connecting a sleeve; 81. an elastic waterproof jacket; 82. emptying the pipe; 811. a middle through hole; 812. an annular surface.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention can be applied to, but not limited to, the following embodiments.
A wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil, as shown in figure 1, comprises a loop formed by sequentially connecting an oil storage tank 1, a variable frequency oil pump 2, a testing section 3 and a flow meter 4 end to end.
The oil storage tank 1 is positioned in the constant-temperature water bath 5, the side wall of the oil storage tank is inserted with the oil temperature sensor 6, the temperature of the raw oil can be adjusted as required, and the stirrer 7 is also inserted into the oil storage tank 1 and used for stirring the raw oil to ensure that the temperature of the raw oil is uniform.
As shown in fig. 2, the testing section 3 is formed by connecting three transparent organic glass tubes 31 in series, the three transparent organic glass tubes 31 are connected by two connecting sleeves 32 with internal threads at two ends, and the connection schematic diagram is shown in fig. 3; the test section 3 is positioned in the constant temperature water bath 8, and two ends of the test section penetrate through the constant temperature water bath 8 and are hermetically connected with the constant temperature water bath 8 through an elastic waterproof sleeve 81, as shown in fig. 4, the center of the elastic waterproof sleeve 81 is provided with a middle through hole 811 matched with the transparent organic glass tube 31, two ends of the elastic waterproof sleeve are provided with annular surfaces 812 respectively attached to the inner wall and the outer wall of the constant temperature water bath 8, and the elastic waterproof sleeve is made of elastic rubber and can fully seal a gap between the transparent organic glass tube 31 and the constant temperature water bath 8; both ends of the test section 3 are connected to upstream and downstream pipelines through connection hoses 9, respectively, and in order to secure the connection, as shown in fig. 5, clamping rings 91 are further provided at both ends of the connection hoses 9. As shown in fig. 2, pressure sensors 10 are arranged at the inlet and the outlet of the testing section 3, and the pressure drop of the whole testing section can be calculated by the pressure difference of the two pressure sensors, so as to calculate the viscosity of the raw oil. The constant temperature water bath 8 is also made of transparent organic glass, the bottom of the constant temperature water bath is provided with an emptying pipe 82, and a valve is arranged on the pipe, so that water is drained out when the test section is convenient to detach.
As shown in fig. 1, a camera 11 is further arranged outside the constant temperature water bath 8, and a camera of the camera 11 is opposite to the test section 3 and is used for recording the condensate deposition process of the test section.
The export of frequency conversion oil pump 2 still communicates with the export of air compressor machine 12, and the export of air compressor machine 12 is provided with the valve, and 1 top of oil storage tank still is provided with the blow-down pipe 13 of taking the hand valve, when frequency conversion oil pump 2 stop work, can fill into gas to put intraductal liquid medium or sweep, air-dry the pipe wall in the circulation line through air compressor machine 12, and the test section 3 of being convenient for is dismantled and the device is clean reserve.
The device is also provided with a data receiver 14 and a computer 15, the side walls of the constant temperature water bath 8 and the constant temperature water bath 5 are both provided with temperature sensors 6, the data receiver 14 is in electric wire connection with the camera 11, the pressure sensor 10 and the temperature sensors 6, and the computer 15 is connected with the data receiver 14 and used for recording relevant data.
The use method of the device is as follows:
(1) connecting an experimental device, putting experimental wax-containing crude oil into the oil storage tank, starting a stirrer, and adjusting the temperature of the oil in the oil storage tank and the temperature of the wall of the test section pipe to target values through a constant-temperature water bath kettle and a constant-temperature water bath.
(2) And (4) opening the computer, the data receiver and the high-speed camera, starting to record data, and starting the variable-frequency oil pump to start testing.
(3) And (4) disassembling and inspecting the test section: after the test is finished, the variable frequency oil pump is closed, the air compressor and the outlet valve thereof are opened, the flow of emptying the pipeline at the top of the oil storage tank is opened, the pipeline is inflated to drive oil and purge the pipeline, the pipeline at the test section is detached after the water in the constant temperature water bath is drained, the wax deposition photos in the pipeline are shot and weighed respectively, the wax deposition weight can be calculated, and the deposits can be sampled.
(4) Cleaning the pipeline, and the device is standby: after the test section detects, return experimental apparatus with it, rise the raw oil temperature through the constant temperature water bath, start the frequency conversion oil pump and carry out hot oil circulation and wash the pipeline, start the air compressor machine and sweep the pipeline, shift the raw oil in the oil storage tank, pull down the test section pipeline and clean for next experiment is used.
The above description is not intended to limit the present invention in any way, and although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art will be able to make modifications or changes to equivalent embodiments without departing from the scope of the present invention.
Claims (6)
1. A wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-bearing crude oil comprises a loop formed by sequentially connecting an oil storage tank, a variable frequency oil pump, a testing section and a flowmeter end to end, wherein the oil storage tank and the testing section are respectively positioned in different constant temperature water baths,
the test section is established ties by many transparent organic glass pipes and is constituteed, and each transparent organic glass pipe is connected through the mode of dismantling, and this experimental apparatus still includes the camera, the camera is just to the test section for record test section deposit change process.
2. The experimental device for simulating wax deposition characteristics and pipe flow characteristics of waxy crude oil according to claim 1, further comprising an air compressor, wherein an outlet of the air compressor is in line communication with an outlet pipe of the variable frequency oil pump, and the oil storage tank is further connected with an emptying pipe for replacing and purging the pipeline.
3. The wax deposition characteristic and pipe flow characteristic simulation experiment device for the waxy crude oil according to claim 1, wherein the plurality of organic glass pipes in the test section have the same pipe diameter and are used for simulating deposition change along the length of the pipeline.
4. The wax deposition characteristic and pipe flow characteristic simulation experiment device for the waxy crude oil according to claim 1, wherein the transparent organic glass pipes in the test section have different pipe diameters and are used for simulating the deposition condition in the reducing process.
5. The experimental device for simulating wax deposition characteristics and pipe flow characteristics of wax-containing crude oil according to any one of claims 1 to 4, wherein the constant-temperature water bath in which the test section is located is also made of transparent organic glass.
6. The experimental apparatus for simulating wax deposition characteristics and pipe flow characteristics of waxy crude oil according to claim 5, further comprising a data receiver and a computer for receiving and recording data, wherein the data receiver is connected to at least the computer and the camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020189332.XU CN211477945U (en) | 2020-02-20 | 2020-02-20 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020189332.XU CN211477945U (en) | 2020-02-20 | 2020-02-20 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
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| CN211477945U true CN211477945U (en) | 2020-09-11 |
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| CN202020189332.XU Expired - Fee Related CN211477945U (en) | 2020-02-20 | 2020-02-20 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175167A (en) * | 2020-02-20 | 2020-05-19 | 西南石油大学 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
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2020
- 2020-02-20 CN CN202020189332.XU patent/CN211477945U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175167A (en) * | 2020-02-20 | 2020-05-19 | 西南石油大学 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |