Heavy component deposition microdynamics behavior observation experiment device and observation method

Abstract

The invention discloses a heavy component deposition microdynamics behavior observation experiment device and an observation method, the heavy component deposition microdynamics behavior observation experiment device comprises a crude oil conveying module, a rheology microscopic instrument, a processing module and a liquid recoverer, the crude oil conveying module is connected with a crude oil inlet pipeline of the rheology microscopic instrument so as to convey crude oil to the rheology microscopic instrument; the rheology microscopic instrument is connected with the processing module, the rheology microscopic instrument is set to be capable of shooting microscopic morphology and dynamic behaviors of heavy components separated out of crude oil in real time under the conditions of different pressures, temperatures and shearing rates, image information is formed and transmitted to the processing module, and the liquid recoverer is connected with a crude oil outlet of the rotational rheometer. The rheology microscopic instrument provided by the invention can directly observe the analysis process of the heavy components in the crude oil, the dynamic evolution of the microstructure and the microdynamics behavior in the environment with set temperature, pressure and shear rate, and can more accurately, intuitively and truly research the deposition rheology behavior of the heavy components in the crude oil.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas storage and transportation engineering, and in particular to an experimental device and method for observing the microscopic dynamic behavior of heavy component deposition. Background Art

[0002] Waxy and asphaltene crude oil has poor low-temperature rheology and is easy to precipitate. The safety and economy issues during transportation and pure storage are technical challenges faced by the field of storage and transportation engineering. Crude oil containing heavy components such as wax and asphaltene is easily affected by shear and thermal history and presents complex and changeable performance, which not only reduces the accuracy of rheological prediction of crude oil containing heavy components, but also increases the risk of gelling accidents caused by rheological deterioration during transportation and storage.

[0003] Compared with shear history, thermal history is more controllable. For thermal history, existing research has mainly focused on the rheological study of waxy crude oil. Although scholars generally recognize that heavy components (wax crystals) are the fundamental factors for the role of thermal history, the current understanding is still limited to the focus on the microscopic morphology and structure of wax. There is still a gap in the dynamic evolution of the micromorphology of wax crystals under external forces such as shear and the dynamic behavior of wax crystals. Moreover, in the prior art, most of the waxy crude oil in actual pipeline transportation or simulated shear experiments is sampled and the microstructure of its wax crystals is observed offline. The observation conditions of wax crystals are difficult to completely replicate the actual shear state of waxy crude oil. In addition, waxy crude oil is very sensitive to changes in shear and thermal conditions. The sampling and observation operation process will inevitably bring about changes in the microstructure of wax crystals, resulting in the obtained wax crystal morphology image being unable to fully and truly reflect the impact of shear on the micromorphology and structure of wax crystals.

[0004] Therefore, an experimental device and method for observing the microscopic dynamic behavior of heavy component deposition are urgently needed to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that in the prior art, most of the samples of waxy crude oil in actual pipeline transportation or simulated shear experiments are taken for offline observation of the microstructure of its heavy components (wax crystals), and the observation conditions of the heavy components are difficult to completely replicate the actual shear state of the crude oil containing heavy components. In addition, the crude oil containing heavy components is very sensitive to changes in shear and thermal conditions. The sampling and observation operation process will inevitably bring about changes in the microstructure of the heavy components, resulting in the problem that the obtained heavy component morphology image cannot fully and truly reflect the influence of shear on the microscopic morphology and structure of the heavy components.

[0006] To this end, in a first aspect, the present invention provides an experimental device for observing the microscopic dynamic behavior of heavy component deposition, comprising a crude oil delivery module, a rheological microscope, a processing module and a liquid recoverer, wherein the crude oil delivery module is connected to the crude oil inlet pipeline of the rheological microscope to deliver crude oil to the rheological microscope, the rheological microscope is connected to the processing module, the rheological microscope is configured to be able to capture the microscopic morphology and dynamic behavior of heavy components precipitated in the crude oil in real time under conditions of different pressures, temperatures and shear rates and form image information to transmit to the processing module, and the liquid recoverer is connected to the crude oil outlet of the rheological microscope.

[0007] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, the rheological microscope includes a high-temperature and high-pressure rotational rheometer and a polarizing microscope system. The high-temperature and high-pressure rotational rheometer includes a rheological disk, a rotational drive system and a main body. The rotational drive system is installed on the main body. The rheological disk is made of a transparent material. The rheological disk includes an upper rheological disk and a lower rheological disk. The lower rheological disk is installed on the main body. The upper rheological disk is located above the lower rheological disk and is connected to the rotational drive system so that it can rotate. The polarizing microscope system is installed inside the main body below the lower rheological disk for taking microscopic images of the crude oil on the lower rheological disk.

[0008] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, the upper rheology plate and the lower rheology plate are both made of transparent quartz glass.

[0009] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, the liquid recoverer is connected to the crude oil outlet of the high-temperature and high-pressure rotational rheometer.

[0010] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, the experimental device for observing the microscopic dynamic behavior of heavy component deposition also includes a gas cylinder, which transports gas to the high-temperature and high-pressure rotational rheometer through a first pipeline for pressure regulation.

[0011] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, the crude oil delivery module includes a plunger pump and a micro-flow pump, the micro-flow pump is connected to the plunger pump through a second pipeline, the plunger pump introduces crude oil into the downstream rheology disk through a third pipeline, and the outlet of the high-temperature and high-pressure rotational rheometer is connected to the liquid recovery device through a discharge pipeline to discharge the crude oil on the downstream rheology disk.

[0012] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, the polarizing microscope system includes a CCD camera, a microscope light tube, a polarizer and an eyepiece connected in sequence, the CCD camera is connected to the processing module, and the eyepiece is used to capture the microscopic image of the crude oil on the downstream rheological disk.

[0013] In a specific embodiment of the above-mentioned experimental device for observing the microscopic dynamic behavior of heavy component deposition, a second valve is installed on the second pipeline, a third valve is installed on the third pipeline, and a fourth valve is installed on the discharge pipeline.

[0014] In a second aspect, the present invention further provides an observation method of the heavy component deposition microscopic dynamic behavior observation experimental device as described in any one of the first aspects, the observation method comprising the following steps:

[0015] Crude oil is introduced into the lower rheological disk of the high temperature and high pressure rotational rheometer, and the crude oil delivery is stopped when crude oil is detected in the liquid recovery device;

[0016] During the crude oil transportation process, the high temperature and high pressure rotational rheometer is controlled to heat and pressurize the crude oil in the lower rheological disk according to a preset temperature and a preset pressure;

[0017] After the crude oil reaches a preset temperature, heating is stopped and the corresponding temperature is maintained; after reaching a preset pressure, pressurization is stopped and the corresponding pressure is maintained; then the upper rheological disk of the high temperature and high pressure rotational rheometer is controlled to rotate at a preset shear rate to apply shear force to the crude oil;

[0018] When the preset shear rate is reached and maintained for the preset time, the polarizing microscope system is controlled to obtain image information of the crude oil on the downstream rheological disk and transmit it to the processing module for processing to obtain the microscopic dynamic behavior information of the heavy component analysis.

[0019] In the specific implementation of the observation method of the above-mentioned heavy component deposition microscopic dynamic behavior observation experimental device, the step of "controlling the polarizing microscope system to obtain image information of the crude oil on the downstream rheological disk" specifically includes:

[0020] The polarizing microscope system is controlled to obtain image information of the crude oil on the downstream variable disk once at a preset interval within a set time.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The rheological microscope provided in the present invention can directly observe the analysis process of heavy components in crude oil, the dynamic evolution of microscopic morphology and microscopic dynamic behavior online in an environment with set temperature, pressure and shear rate. It not only does not need to take samples offline for measurement, but also adds pressure, temperature and shear rate to more accurately simulate the original environment. The present invention can more accurately, intuitively and realistically study the rheological behavior of heavy components in crude oil, and provides a basis for the study of the dynamic evolution of wax crystal micromorphology and the dynamic behavior of wax crystal under external forces such as shear.

[0023] 2. The present invention can modify the values ​​of temperature, pressure and shear rate according to needs. By acquiring multiple sets of image information, it can more accurately understand the heavy component analysis process, dynamic evolution of microscopic morphology and microscopic dynamic behavior in crude oil under set conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0025] Figure 1 It is a schematic diagram of the overall structure of the experimental device for observing the microscopic dynamic behavior of heavy component deposition provided by the present invention;

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure of the rheological microscope;

[0027] Figure 3 This is a diagram showing the positional relationship between the rheological disk and the polarizing microscope system.

[0028] List of reference numerals:

[0029] 1. Gas cylinder; 2. First valve; 3. Micro flow pump; 4. Plunger pump; 5. Rheological microscope; 6. Liquid recovery device; 7. Processing module; 8. Polarized light microscope system; 9. Lower rheological disk; 10. Upper rheological disk; 11. Main body; 12. Rotary drive system; 13. Sealing cover; 14. Crude oil; 15. First pipeline; 16. Second pipeline; 17. Third pipeline; 18. Discharge pipeline. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc., are used to define components, only for the convenience of distinguishing the above components, and unless otherwise stated, the above terms have no special meanings and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The present invention relates to the field of oil and gas storage and transportation engineering technology, and in particular to an experimental device and method for observing the microscopic dynamic behavior of heavy component deposition. The purpose is to solve the problem that in the prior art, most of the microstructures of heavy components (wax crystals) are observed offline by sampling waxy crude oil in actual pipeline transportation or simulated shear experiments, and the observation conditions of the heavy components are difficult to completely replicate the actual shear state of the crude oil containing heavy components. In addition, crude oil containing heavy components is very sensitive to changes in shear and thermal conditions, and the sampling and observation operation process will inevitably bring about changes in the microstructure of the heavy components, resulting in the problem that the obtained heavy component morphology image cannot fully and truly reflect the impact of shear on the microscopic morphology and structure of the heavy components. To this end, the present invention provides an experimental device and method for observing the microscopic dynamic behavior of heavy component deposition, comprising a crude oil delivery module, a rheological microscope, a processing module and a liquid recoverer. The crude oil delivery module is connected to the crude oil inlet pipeline of the rheological microscope to deliver crude oil to the rheological microscope. The rheological microscope is connected to the processing module. The rheological microscope is configured to be able to capture the microscopic morphology and dynamic behavior of heavy components precipitated in crude oil in real time under different pressures, temperatures and shear rates and form image information to be transmitted to the processing module. The liquid recoverer is connected to the crude oil outlet of the rheological microscope. The rheological microscope provided in the present invention can directly observe the heavy component precipitation process, dynamic evolution of microscopic morphology and microscopic dynamic behavior in the crude oil in an environment with set temperature, pressure and shear rate, without the need for offline sampling and then measurement. The present invention can more accurately, intuitively and realistically study the rheological behavior of heavy component deposition in crude oil, and provides a basis for the dynamic evolution of wax crystal microscopic morphology and the dynamic behavior of wax crystal under the action of external forces such as shear.

[0034] Next, the experimental device and method for observing the microscopic dynamic behavior of heavy component deposition provided by the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0035] See also Figure 1 The present invention provides an experimental device for observing the microscopic dynamic behavior of heavy component deposition, comprising a crude oil delivery module, a rheological microscope 5, a processing module 7 and a liquid recoverer 6. The crude oil delivery module is connected to the crude oil inlet pipeline of the rheological microscope 5 to deliver crude oil to the rheological microscope 5. The rheological microscope 5 is connected to the processing module 7. The rheological microscope 5 is configured to be able to capture the microscopic morphology and dynamic behavior of heavy components precipitated in the crude oil in real time under different pressures, temperatures and shear rates and form image information to transmit to the processing module 7. The liquid recoverer 6 is connected to the crude oil outlet of the rheological microscope.

[0036] Specifically, see Figure 2-3The rheological microscope 5 includes a high-temperature and high-pressure rotational rheometer and a polarizing microscope system 8. The high-temperature and high-pressure rotational rheometer includes a rheological disk, a rotation drive system 12 and a main body 11. The rotation drive system 12 is installed on the main body 11. The rheological disk is made of a transparent material. The rheological disk includes an upper rheological disk 10 and a lower rheological disk 9. The lower rheological disk 9 is installed on the main body 11. The upper rheological disk 10 is located above the lower rheological disk 9 and is connected to the rotation drive system 12 so that it can rotate. The polarizing microscope system 8 is installed inside the main body 11 below the lower rheological disk 9 for taking microscopic images of the crude oil on the lower rheological disk 9. The lower rheological disk is used to hold crude oil 14.

[0037] The high-temperature and high-pressure rotational rheometer in the present application has temperature and pressure regulation functions, and a temperature control system is installed in the main body 11 for heating the lower rheological disk 9 and maintaining it within a preset temperature.

[0038] The high-temperature and high-pressure rotational rheometer is provided with a pressure regulating system, which can place the rheological disk in an environment with a preset pressure value, and perform corresponding operations on the crude oil in this pressure environment. In order to place the rheological disk in a closed cavity to adjust the pressure in the cavity, a sealing cover is provided on the high-temperature and high-pressure rotational rheometer in the prior art. The sealing cover is connected to a rotary drive system, and the rotary drive system drives the sealing cover to move up and down. During the downward movement, the crude oil in the rheological disk can be sealed in the sealing cover, and additional pressure can be applied to the sample by air pressure or hydraulic pressure, and the pressure can be controlled. Gas pressurization can be performed with inert gases such as nitrogen and carbon dioxide. Generally, the pressurization range is relatively low. The maximum pressure that can be added to the gas cylinder is about 12MPa, and the secondary pressurization can reach about 40MPa. Figure 1 As shown, the high temperature and high pressure rotational rheometer is equipped with a gas source delivery module, which includes a gas cylinder and a first pipeline. The gas cylinder delivers gas to the high temperature and high pressure rotational rheometer through the first pipeline for pressure regulation. The high temperature and high pressure rotational rheometer drives a measuring rotor (referred to as an upper rheological disk in this application) through a motor to generate a shear rate on crude oil (also referred to as a sample), and simultaneously measures the resistance of the sample response, i.e., the shear stress.

[0039] It should be noted that since the high-temperature and high-pressure rotational rheometer has its own temperature control system and pressure regulation system, this is a known prior art to those skilled in the art, and this part of the content is not the content protected by this application. Therefore, the structure of the temperature control system and the pressure regulation system will not be described in detail here.

[0040] In one embodiment, the upper rheological disc 10 and the lower rheological disc 9 are both made of transparent quartz glass, so that the polarized light microscope system 8 located below the lower rheological disc 9 can capture the image of the crude oil on the lower rheological disc 9 .

[0041] In the above embodiment, the crude oil delivery module includes a plunger pump 4 and a micro-flow pump 3. The micro-flow pump 3 is connected to the plunger pump 4 through a second pipeline, and the plunger pump 4 is connected to the rheological microscope 5 through a third pipeline.

[0042] Specifically, see Figure 1 The first pipeline is provided with a first valve 2, the second pipeline is provided with a second valve, the plunger pump 4 introduces crude oil to the lower rheological disk 9 through the third pipeline, the third pipeline is provided with a third valve, and the outlet of the rotational rheometer is connected to the liquid recovery device 6 through the discharge pipeline to discharge the crude oil 14 on the lower rheological disk 9. The discharge pipeline is provided with a fifth valve.

[0043] In the above embodiment, the gas cylinder 1 delivers gas to the high-temperature and high-pressure rotational rheometer in order to pressurize the crude oil 14 so that the crude oil is at a preset pressure to undergo a heavy component separation and deposition process.

[0044] In one embodiment, see Figure 3 The polarizing microscope system 8 includes a CCD camera, a microscope light tube, a polarizer and an eyepiece connected in sequence. The CCD camera is connected to the processing module 7, and the eyepiece is used to capture the microscopic image of the crude oil on the lower rheological disk 9.

[0045] In the present application, the processing module 7 may be a computer device.

[0046] In another embodiment, the present invention further provides an observation method of the heavy component deposition microscopic dynamic behavior observation experimental device as described in the various embodiments above, the observation method comprising the following steps:

[0047] Crude oil is introduced into the lower rheological disk of the high temperature and high pressure rotational rheometer, and the crude oil delivery is stopped when crude oil is detected in the liquid recovery device;

[0048] Specifically, the micro flow pump 3 is started to deliver the crude oil to the plunger pump 4, and the plunger pump 4 then delivers the crude oil to the lower rheological disk 9 through the third pipeline.

[0049] During the crude oil transportation process, the high temperature and high pressure rotational rheometer is controlled to heat and pressurize the crude oil in the lower rheological disk 9 according to a preset temperature and a preset pressure;

[0050] Specifically, the temperature control system in the rotational rheometer is controlled to heat the lower rheological disk 9, and the pressure regulating system is controlled to increase the pressure in the measuring cavity.

[0051] After the crude oil reaches a preset temperature, heating is stopped and the corresponding temperature is maintained; after reaching a preset pressure, pressurization is stopped and the corresponding pressure is maintained; then the upper rheological disk of the high temperature and high pressure rotational rheometer is controlled to rotate at a preset shear rate to apply shear force to the crude oil;

[0052] When the preset shear rate is reached and maintained for the preset time, the polarizing microscope system 8 is controlled to obtain the image information of the crude oil on the downstream rheological disk 9 and transmit it to the processing module 7 for processing to obtain the microscopic dynamic behavior information of the heavy component analysis.

[0053] In one embodiment, the step of “controlling the polarizing microscope system 8 to obtain image information of crude oil on the downstream flow change plate 9” specifically includes:

[0054] The polarizing microscope system 8 is controlled to obtain image information of the crude oil on the downstream change plate 9 at a preset interval within the set time. In this way, multiple sets of image information can be obtained, which is more conducive to accurately observing the microscopic dynamic behavior of the heavy group analysis in the crude oil.

[0055] It should be noted that the specific values ​​of the preset temperature, preset shear rate, preset pressure, preset time and preset interval time in this application are not specifically limited in this application. Without deviating from the basic principles of the present invention, they can be flexibly set according to experimental requirements, and each parameter can be set with multiple values. These parameters are divided into multiple groups of data for separate experiments, so that more data can be obtained, which is conducive to the study of the microscopic kinetic behavior of the original medium and heavy mass groups analyzed, and is more accurate.

[0056] The rheological microscope provided by the present invention can directly observe the analysis process of heavy components in crude oil, the dynamic evolution of microscopic morphology and microscopic dynamic behavior online in an environment with set temperature, pressure and shear rate. It not only does not need to take samples offline for measurement, but also adds pressure, temperature and shear rate to more accurately simulate the original environment. The present invention can more accurately, intuitively and realistically study the rheological behavior of heavy component deposition in crude oil, and provides a basis for the study of the dynamic evolution of wax crystal microscopic morphology and the dynamic behavior of wax crystal under the action of external forces such as shear.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An experimental device for observing the microscopic dynamic behavior of heavy component deposition, characterized in that: The invention comprises a crude oil delivery module, a rheological microscope, a processing module and a liquid recoverer. The crude oil delivery module is connected to the crude oil inlet pipeline of the rheological microscope to deliver crude oil to the rheological microscope. The rheological microscope is connected to the processing module. The rheological microscope is configured to be able to photograph the microscopic morphology and dynamic behavior of heavy components precipitated in the crude oil in real time under conditions of different pressures, temperatures and shear rates and form image information to be transmitted to the processing module. The liquid recoverer is connected to the crude oil outlet of the rheological microscope.

2. The heavy component deposition microscopic dynamic behavior observation experimental device according to claim 1 is characterized in that: The rheological microscope includes a high-temperature and high-pressure rotational rheometer and a polarizing microscope system. The high-temperature and high-pressure rotational rheometer includes a rheological disk, a rotation drive system and a main body. The rotation drive system is installed on the main body. The rheological disk is made of a transparent material. The rheological disk includes an upper rheological disk and a lower rheological disk. The lower rheological disk is installed on the main body. The upper rheological disk is located above the lower rheological disk and is connected to the rotation drive system to enable it to rotate. The polarizing microscope system is installed inside the main body below the lower rheological disk to capture a microscopic image of the crude oil on the lower rheological disk.

3. The heavy component deposition microscopic dynamic behavior observation experimental device according to claim 2 is characterized in that: The upper flow rheology plate and the lower flow rheology plate are both made of transparent quartz glass.

4. The heavy component deposition microscopic dynamic behavior observation experimental device according to claim 2 is characterized in that: The liquid recovery device is connected to the crude oil outlet of the high temperature and high pressure rotational rheometer.

5. The heavy component deposition microscopic dynamic behavior observation experimental device according to claim 2 is characterized in that: The high temperature and high pressure rotational rheometer is further configured with a gas source delivery module, and the gas source delivery module delivers gas to the high temperature and high pressure rotational rheometer for pressure regulation.

6. The heavy component deposition microscopic dynamic behavior observation experimental device according to claim 2, characterized in that: The crude oil delivery module includes a plunger pump and a micro-flow pump, the micro-flow pump is connected to the plunger pump through a second pipeline, the plunger pump introduces crude oil to the lower rheological disk through a third pipeline, and the outlet of the high-temperature and high-pressure rotational rheometer is connected to a liquid recovery device through a discharge pipeline to discharge the crude oil on the lower rheological disk.

7. The heavy component deposition microscopic dynamic behavior observation experimental device according to claim 2, characterized in that: The polarized light microscope system comprises a CCD camera, a microscope light tube, a polarizer and an eyepiece which are connected in sequence. The CCD camera is connected to the processing module, and the eyepiece is used to take a microscopic image of the crude oil on the downstream rheological disk.

8. The experimental device for observing the microscopic dynamic behavior of heavy component deposition according to claim 6 is characterized in that: A second valve is installed on the second pipeline, a third valve is installed on the third pipeline, and a fourth valve is installed on the discharge pipeline.

9. An observation method for the heavy component deposition microscopic dynamics behavior observation experimental device according to any one of claims 2 to 8, characterized in that: The observation method comprises the following steps: Crude oil is introduced into the lower rheological disk of the high temperature and high pressure rotational rheometer, and the crude oil delivery is stopped when crude oil is detected in the liquid recovery device; During the crude oil transportation process, the high temperature and high pressure rotational rheometer is controlled to heat and pressurize the crude oil in the lower rheological disk according to a preset temperature and a preset pressure; After the crude oil reaches a preset temperature, heating is stopped and the corresponding temperature is maintained; after reaching a preset pressure, pressurization is stopped and the corresponding pressure is maintained; then the upper rheological disk of the high temperature and high pressure rotational rheometer is controlled to rotate at a preset shear rate to apply shear force to the crude oil; When the preset shear rate is reached and maintained for the preset time, the polarizing microscope system is controlled to obtain image information of the crude oil on the downstream rheological disk and transmit it to the processing module for processing to obtain the microscopic dynamic behavior information of the heavy component analysis.

10. The observation method of the heavy component deposition microscopic dynamic behavior observation experimental device according to claim 9, characterized in that: The steps of "controlling the polarizing microscope system to obtain image information of crude oil on the downstream variable disk" specifically include: The polarizing microscope system is controlled to obtain image information of the crude oil on the downstream variable disk once at a preset interval within a set time.

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