Infrared imaging monitoring device and method for interaction between carbon dioxide and crude oil

Abstract

The present invention discloses an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil, and relates to the field of crude oil analysis equipment. The device comprises a test equipment box, an integrated sample table is arranged inside the upper end of the test equipment box, a crude oil inlet and outlet mechanism is arranged on one side of the integrated sample table, an observation mechanism is arranged on the other side and the top of the integrated sample table, and a carbon dioxide feeding mechanism is installed at the bottom of the integrated sample table. The infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil, by arranging a capillary silicon tube and an observation mechanism, facilitates the observation of the interaction between crude oil and carbon dioxide from a microscopic model, and by designing the crude oil inlet and outlet mechanism and the integrated sample table, the raw material filling and discharge of the capillary silicon tube can be realized, which is convenient for continuous control tests, and there is no need to repeatedly plug and unplug the capillary silicon tube, which is easy to operate, and can avoid damaging the capillary silicon tube and polluting the test environment.

Description

Technical Field

[0001] The invention relates to the technical field of crude oil analysis equipment, and in particular to an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil. Background Art

[0002] We are currently developing innovative high-temperature and high-pressure infrared imaging technology to visualize the interaction process between carbon dioxide and crude oil under reservoir conditions. It provides visualization and monitoring methods for the study of the interaction mechanism between carbon dioxide and crude oil, thereby helping to adjust the carbon dioxide injection process on site and maximize the level of crude oil recovery.

[0003] The current microscopic visualization model technology uses high-precision test equipment and advanced imaging technologies such as microscopes, nuclear magnetic resonance imaging and X-ray scanning to achieve real-time observation and analysis of material structure, fluid flow, chemical reactions and other processes at the microscopic scale; among them, observation under a microscope is the most direct method and means. This technology mainly has the following problems: 1. Since black crude oil has very poor transmittance under visible light, visible light observation cannot achieve good observation results. 2. Microscopic model: To understand the interaction between carbon dioxide and crude oil under reservoir conditions, capillary voids and capillary forces are important factors. Microscopic etching is a good model, but there are some limitations on pressure and temperature resistance; 3. High temperature and high pressure control: High temperature and high pressure are one of the most important characteristics of oil reservoirs. The pressure control used in nuclear magnetic resonance and X-ray diffraction technology can be used as a reference, but temperature control cannot be directly adopted;

[0004] At the same time, when using capillaries for simulation observation, as a delicate structure, capillaries are very easy to be damaged during the process of transferring, adding and discharging crude oil, increasing pressure and temperature, and connecting and sealing.

[0005] In view of the above problems, an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil are provided. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil, which solves the problem that the existing microscopic observation model of the interaction between crude oil and carbon dioxide is difficult to observe and is very easy to be damaged during the capillary transfer, addition and discharge of crude oil, pressurization and temperature increase, and connection and sealing process during the experiment.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an infrared imaging monitoring device for the interaction between carbon dioxide and crude oil, comprising a test equipment box, an integrated sample stage is arranged inside the upper end of the test equipment box, a crude oil feeding and discharging mechanism is arranged on one side of the integrated sample stage, an observation mechanism is arranged on the other side and the top of the integrated sample stage, and a carbon dioxide feeding mechanism is installed at the bottom of the integrated sample stage;

[0008] The crude oil inlet and outlet mechanism comprises a crude oil feed tank and a pressurized clean gas tank, and plug-in connectors are provided below the crude oil feed tank and the pressurized clean gas tank;

[0009] The observation mechanism includes an infrared camera and a Raman probe installed on the top of the test equipment box, and an infrared microscope installed on the side wall of the test equipment box;

[0010] The integrated sample stage comprises a movable hot and cold stage, a capillary silicon tube is movably connected inside the movable hot and cold stage, both ends of the capillary silicon tube are movably plugged with plugging pieces, two groups of plug connectors are installed on one side of the movable hot and cold stage, and a carbon dioxide conduit is installed on the other side of the movable hot and cold stage, and the carbon dioxide conduit is connected to a carbon dioxide feeding mechanism;

[0011] One group of the blocking pieces is connected to one group of plug connectors, and a three-way solenoid valve is installed between another group of the blocking pieces, the carbon dioxide conduit and the other group of plug connectors;

[0012] The plug connector is movably plugged into the plug-in connector.

[0013] Preferably, the crude oil feeding and discharging mechanism further comprises a pressurized air pump, an air intake three-way valve is installed between the output end of the pressurized air pump and the crude oil feed tank and the pressurized clean air tank, and the crude oil feed tank comprises a tank body and a piston member slidably arranged inside the tank body.

[0014] Preferably, a mounting seat is fixedly installed on the upper side wall of the test equipment box, and a sewage storage box is fixedly installed on the lower side wall of the test equipment box. The plug-in connector includes three groups of oil inlet nozzles, air inlet nozzles and sewage discharge nozzles with the same structure fixed on the mounting seat, the oil inlet nozzle is connected to the crude oil feed tank, the air inlet nozzle is connected to the pressurized clean gas tank, and a sewage discharge pipe is installed between the sewage discharge nozzle and the sewage storage box.

[0015] Preferably, the plug-in connector includes an outer tube, a sealing gasket, a hollow bracket and a ejector pin, the sealing gasket is fixedly connected to the inner wall of the front end of the outer tube, the hollow bracket is fixedly installed on the inner wall of the end of the outer tube, and the ejector pin is fixedly arranged in the middle of the hollow bracket.

[0016] Preferably, the carbon dioxide feeding mechanism includes a plunger pump and a carbon dioxide compression storage tank fixedly installed at the bottom of the test equipment box, the top of the plunger pump and the carbon dioxide compression storage tank are connected to the carbon dioxide conduit, a suspension bracket is installed between the top of the infrared camera and the Raman probe and the inner top of the test equipment box, one end of the infrared microscope passes through the side wall of the test equipment box, a screen-displayed control switch is installed on the outer surface of the test equipment box, a microscope observation platform is installed on the middle lower surface of the test equipment box, and the integrated sample stage is arranged above the microscope observation platform.

[0017] Preferably, the integrated sample stage further comprises:

[0018] A supporting slide rail, which is fixedly arranged on the top of the microscope observation platform;

[0019] A transverse sliding carrier plate is slidably arranged on the top of the supporting slide rail, and the movable hot and cold table is longitudinally slidably arranged on the transverse sliding carrier plate;

[0020] A slide groove is provided on the top of the supporting slide rail;

[0021] A servo motor, which is fixedly arranged at the top of the lower end of the test equipment box;

[0022] A connecting block, which is slidably arranged in the slide groove, and the connecting block is fixedly connected to the transverse sliding carrier plate;

[0023] A driving screw rod is fixedly arranged at the output end of the servo motor and is threadedly connected to the connecting block;

[0024] A positioning block is fixedly arranged at the bottom of the movable hot and cold table, and the positioning block is slidably connected to the upper surface of the transverse sliding carrier plate;

[0025] The servo cylinder is fixedly embedded in the inner bottom wall of the transverse sliding carrier plate, and the output end of the servo cylinder is fixedly connected to the positioning block.

[0026] Preferably, the movable hot and cold table comprises a hot and cold carrier, a transparent cover, a positioning groove, a fixed seat and a fixed latch, wherein the transparent cover is rotatably arranged on one side of the top of the hot and cold carrier, the fixed latch is slidably connected to the other side of the hot and cold carrier, and the fixed latch is movably plugged with the transparent cover;

[0027] The positioning groove is provided on a side of the hot and cold carrier opposite to the transparent cover plate, and the blocking member is provided inside both ends of the positioning groove on the hot and cold carrier;

[0028] The fixing seat is fixedly arranged on one side of the cold and hot carrier, the three-way solenoid valve is installed inside the other side of the cold and hot carrier, and the plug connector is fixedly installed on the outside of the fixing seat.

[0029] Preferably, one group of the blocking pieces is fixedly installed in the positioning grooves, and the other group is slidably connected in the positioning grooves, and a pressure gauge is installed between the slidably arranged blocking piece and the three-way solenoid valve, a push rod is movably hinged on the top of one side of the transparent cover plate, a sliding groove is provided on the inner top of one side of the hot and cold load seats, a wedge-shaped sliding piece is slidably arranged inside the sliding groove, one end of the wedge-shaped sliding piece is movably hinged to the push rod, and the other end of the wedge-shaped sliding piece is movably sleeved on the outer surface of the middle part of the slidably arranged blocking piece.

[0030] Preferably, the plug connector comprises a plug tube, a sliding seal and a spring;

[0031] The sliding seal comprises a T-shaped plug, a first hollow positioning frame, a rubber sealing sleeve, a connecting shaft and a second hollow positioning frame, wherein the T-shaped plug and the second hollow positioning frame are fixedly arranged at both ends of the connecting shaft, the first hollow positioning frame is fixedly arranged on the outer surface of the end of the T-shaped plug, the rubber sealing sleeve is fixedly arranged on the outer surface of the front end of the T-shaped plug, and the spring is movably sleeved on the outer surface of the connecting shaft;

[0032] A large diameter inner cavity is arranged in the middle of the cannula, the first hollow positioning frame and the spring are both slidably arranged in the large diameter inner cavity, and the T-shaped plug and the second hollow positioning frame are slidably arranged inside the two ends of the cannula.

[0033] Preferably, the method of the infrared imaging monitoring device for the interaction between carbon dioxide and crude oil comprises the following steps;

[0034] Step 1: Capillary assembly;

[0035] Place the silicon capillary tube into the positioning groove, close the transparent cover, and insert the plugging pieces at both ends into the silicon capillary tube;

[0036] Step 2: Material loading;

[0037] The servo motor is started to move the movable hot and cold table closer to the crude oil inlet and outlet mechanism, so that a set of plug connectors are inserted into the oil inlet nozzle, and the pressurized air pump is started to pressurize the crude oil at the bottom of the tank body into the oil inlet nozzle. The servo motor is reversed to reset the movable hot and cold table, and the carbon dioxide compression storage tank and the plunger pump are turned on to inject carbon dioxide and adjust the pressure at the same time;

[0038] Step 3: Observation;

[0039] Start the infrared camera and Raman probe. The Raman probe measures the carbon dioxide concentration, the infrared camera records the reaction process, and the infrared microscope observes the reaction process in real time.

[0040] Step 4: Clean the object being observed;

[0041] Start the servo cylinder so that the two sets of plug connectors are facing the air inlet nozzle and the sewage discharge nozzle, start the servo motor so that the two sets of plug connectors are respectively inserted into the air inlet nozzle and the sewage discharge nozzle, and the high-pressure air inside the pressurized cleaning gas tank enters the capillary silicon tube, so that the crude oil material after the test enters the sewage storage box for storage, completing the cleaning.

[0042] The present invention discloses an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil, which has the following beneficial effects:

[0043] 1. The infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil use a capillary silicon tube as a microscopic container for the experiment to simulate an oil reservoir, then use a crude oil feed tank to inject crude oil, use a plunger pump and a carbon dioxide compression storage tank to fill carbon dioxide gas and maintain pressure, and use a movable hot and cold stage to control temperature, thereby simulating the interaction between crude oil and carbon dioxide in a real oil reservoir environment. At the same time, a 532nm Raman probe is used to measure the carbon dioxide concentration to understand its diffusion rate. A 1700nm wavelength infrared camera is used to observe the interaction between carbon dioxide and crude oil in a high-temperature and high-pressure capillary silicon tube through infrared imaging technology, and the captured images are recorded. At the same time, an infrared microscope is started to conduct real-time observation from the outside of the test equipment box, thereby facilitating the observation of the interaction between crude oil and carbon dioxide from a microscopic model.

[0044] 2. The infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil, the capillary silicon tube is pressed and fixed by a transparent cover plate on the movable hot and cold table, and both ends of the capillary silicon tube are blocked by setting blocking pieces, and then the plug connector is used to connect with the crude oil inlet and outlet mechanism. When in use, the movable hot and cold table is driven to move by a servo motor and a servo cylinder, so that the automatic filling of crude oil and the infusion of carbon dioxide can be realized, and after use, the plug connector can be adjusted to the facing position by moving forward and backward, so as to clean the material in the capillary silicon tube, which is convenient for continuous control tests, and there is no need to repeatedly plug and unplug the capillary silicon tube. The operation is convenient and can avoid damage to the capillary silicon tube and pollution of the test environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 This is a schematic diagram of the external structure of the test equipment box of the present invention;

[0047] Figure 2This is a schematic diagram of the top structure of the test equipment box of the present invention;

[0048] Figure 3 This is a schematic diagram of the bottom structure of the test equipment box of the present invention;

[0049] Figure 4 This is a schematic diagram of the crude oil inlet and outlet mechanism structure of the present invention;

[0050] Figure 5 It is a schematic diagram of the tank structure of the present invention;

[0051] Figure 6 A cross-sectional view of the internal structure of the plug-in connector of the present invention;

[0052] Figure 7 This is a schematic diagram of the top structure of the integrated sample stage of the present invention;

[0053] Figure 8 This is a schematic diagram of the bottom structure of the integrated sample stage of the present invention;

[0054] Fig. 9 This is a schematic diagram of the outer surface structure of the movable hot and cold stage of the present invention;

[0055] Fig.10 This is a cross-sectional view of the internal structure of the movable hot and cold table of the present invention;

[0056] Fig.11 It is a schematic diagram of the outer surface structure of the wedge-shaped sliding member of the present invention;

[0057] Fig.12 This is a schematic diagram of the plug connector structure of the present invention;

[0058] Fig.13 It is a schematic diagram of the structure of the sliding seal of the present invention.

[0059] In the figure: 1. Test equipment box; 2. Screen display control switch; 3. Observation mechanism; 31. Infrared camera; 32. Raman probe; 33. Suspension bracket; 34. Infrared microscope; 35. Microscopic observation platform; 4. Crude oil inlet and outlet mechanism; 41. Crude oil feed tank; 411. Tank body; 412. Piston; 42. Pressurized clean gas tank; 43. Pressurized air pump; 44. Inlet three-way valve; 45. Mounting seat; 46. Drain pipe; 47. Plug-in connector; 471. Oil inlet nozzle; 472. Inlet nozzle; 473. Drain nozzle; 4701. Outer tube; 4702. Sealing gasket; 4703. Hollow bracket; 4704. Ejector pin; 48. Drain box; 5. Carbon dioxide feed mechanism; 51. Plunger pump; 52. Carbon dioxide compression storage tank; 6. Integrated sample table; 61. Support slide rail; 62. Horizontally sliding carrier; 63, movable hot and cold table; 631, hot and cold carrier; 632, transparent cover; 633, positioning groove; 634, capillary silicon tube; 635, fixed seat; 636, plugging piece; 637, wedge-shaped sliding piece; 638, plug connector; 6381, plug tube; 6382, sliding seal; 63821, T-shaped plug; 63822, first hollow positioning frame; 63823, rubber sealing sleeve; 63824, connecting shaft; 63825, second hollow positioning frame; 6383, spring; 639, carbon dioxide conduit; 6310, fixing pin; 6311, three-way solenoid valve; 6312, pressure gauge; 6313, sliding groove; 6314, push rod; 64, slide groove; 65, servo motor; 66, driving screw; 67, connecting block; 68, servo cylinder; 69, positioning block. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. 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 creative work are within the scope of protection of the present invention.

[0061] The embodiments of the present application provide an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil, thereby solving the problem that the existing microscopic observation model of the interaction between crude oil and carbon dioxide is difficult to observe and is prone to damage during the capillary transfer, addition and discharge of crude oil, pressurization and temperature increase, and connection and sealing processes during the experiment.

[0062] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0063] The embodiments of the present invention disclose an infrared imaging monitoring device and method for the interaction between carbon dioxide and crude oil.

[0064] According to the attached Figure 1-13 As shown, it comprises a test equipment box 1, an integrated sample table 6 is arranged inside the upper end of the test equipment box 1, a crude oil feeding and discharging mechanism 4 is arranged on one side of the integrated sample table 6, an observation mechanism 3 is arranged on the other side and the top of the integrated sample table 6, and a carbon dioxide feeding mechanism 5 is installed at the bottom of the integrated sample table 6;

[0065] The crude oil feeding and discharging mechanism 4 comprises a crude oil feeding tank 41 and a pressurized clean gas tank 42, and a plug-in connector 47 is provided below the crude oil feeding tank 41 and the pressurized clean gas tank 42;

[0066] The observation mechanism 3 includes an infrared camera 31 and a Raman probe 32 installed on the top of the test equipment box 1, and an infrared microscope 34 installed on the side wall of the test equipment box 1. The 532nm Raman probe 32 realizes the measurement of carbon dioxide concentration, so as to understand its diffusion rate. The infrared camera 31 with a wavelength of 1700nm is used to observe the interaction between carbon dioxide and crude oil in the high-temperature and high-pressure capillary silicon tube 634 through infrared imaging technology, and the captured images are recorded;

[0067] The integrated sample stage 6 includes a movable hot and cold stage 63, a capillary silicon tube 634 is movably connected inside the movable hot and cold stage 63, both ends of the capillary silicon tube 634 are movably plugged with plugging pieces 636, two groups of plug connectors 638 are installed on one side of the movable hot and cold stage 63, and a carbon dioxide conduit 639 is installed on the other side of the movable hot and cold stage 63, and the carbon dioxide conduit 639 is connected to the carbon dioxide feeding mechanism 5;

[0068] A set of plugging members 636 is connected to a set of plug connectors 638. When the plug connectors 638 are plugged into the oil inlet nozzle 471 during use, the other set of plug connectors 638 are in a sealed state. At this time, crude oil is poured into the capillary silicon tube 634. When the plug connectors 638 are plugged into the air inlet nozzle 472, the other set of plug connectors 638 is just plugged into the sewage discharge nozzle 473. At this time, high-pressure gas is filled into the capillary silicon tube 634 through the pressurized cleaning gas tank 42 to flush and discharge the tested materials into the sewage storage box 48 to achieve cleaning. Therefore, in the control test, there is no need to plug and unplug the capillary silicon tube 634, which is convenient for operation;

[0069] A three-way solenoid valve 6311 is installed between another set of blocking pieces 636, the carbon dioxide conduit 639 and another set of plug connectors 638. By changing the flow direction of the three-way solenoid valve 6311, when the three-way solenoid valve 6311 is connected to another set of plug connectors 638, it is used to connect to the sewage storage box 48 to achieve sewage discharge. When the three-way solenoid valve 6311 is connected to the carbon dioxide conduit 639, it is used to inject carbon dioxide into the capillary silicon tube 634 and perform pressurization.

[0070] The plug connector 638 is movably connected to the plug-in connector 47 .

[0071] The crude oil inlet and outlet mechanism 4 also includes a pressurized air pump 43. An air inlet three-way valve 44 is installed between the output end of the pressurized air pump 43 and the crude oil feed tank 41 and the pressurized clean air tank 42. The crude oil feed tank 41 includes a tank body 411 and a piston member 412 slidably arranged inside the tank body 411.

[0072] A mounting seat 45 is fixedly installed on the upper side wall of the test equipment box 1, and a sewage storage box 48 is fixedly installed on the lower side wall of the test equipment box 1. The plug-in connector 47 includes three groups of oil inlet nozzles 471, air inlet nozzles 472 and sewage discharge nozzles 473 with the same structure fixed on the mounting seat 45. The oil inlet nozzle 471 is connected to the crude oil feed tank 41, the air inlet nozzle 472 is connected to the pressurized clean gas tank 42, and a sewage discharge pipe 46 is installed between the sewage discharge nozzle 473 and the sewage storage box 48.

[0073] The plug-in connector 47 includes an outer tube 4701, a sealing gasket 4702, a hollow bracket 4703 and a ejector pin 4704. The sealing gasket 4702 is fixedly connected to the inner wall of the front end of the outer tube 4701, the hollow bracket 4703 is fixedly installed on the inner wall of the end of the outer tube 4701, and the ejector pin 4704 is fixedly arranged in the middle of the hollow bracket 4703. The hollow bracket 4703 can support the ejector pin 4704 without affecting the flow of the medium inside the outer tube 4701, and the hollow bracket 4703 is composed of a plurality of conical parts, which are integrally formed with the inner wall of the outer tube 4701, so as to have a stronger supporting effect toward the outer end to avoid deformation and breakage.

[0074] The carbon dioxide feeding mechanism 5 includes a plunger pump 51 and a carbon dioxide compression storage tank 52 fixedly installed at the bottom of the test equipment box 1. The plunger pump 51 can help the carbon dioxide compression storage tank 52 to be pressed into the capillary silicon tube 634, and at the same time provide the required simulated reservoir pressure for the inside of the capillary silicon tube 634. The carbon dioxide compression storage tank 52 is equipped with a check valve, which can be opened and closed to avoid material return. The top of the plunger pump 51 and the carbon dioxide compression storage tank 52 are connected to the carbon dioxide conduit 639. A suspension bracket 33 is installed between the top of the infrared camera 31 and the Raman probe 32 and the inner top of the test equipment box 1. One end of the infrared microscope 34 passes through the side wall of the test equipment box 1. A screen display control switch 2 is installed on the outer surface of the test equipment box 1. A microscope observation platform 35 is installed on the lower surface of the middle part of the test equipment box 1, and an integrated sample platform 6 is arranged above the microscope observation platform 35.

[0075] The integrated sample stage 6 also includes:

[0076] A support rail 61, which is fixedly arranged on the top of the microscope observation platform 35;

[0077] A transverse sliding carrier plate 62 is slidably disposed on the top of the supporting slide rail 61, and a movable hot and cold table 63 is longitudinally slidably disposed on the transverse sliding carrier plate 62;

[0078] A slide groove 64 is provided on the top of the supporting slide rail 61;

[0079] A servo motor 65, which is fixedly arranged at the top of the lower end of the test equipment box 1;

[0080] A connecting block 67, which is slidably disposed in the slide groove 64, and the connecting block 67 is fixedly connected to the transverse sliding carrier plate 62;

[0081] A driving screw 66 is fixedly disposed at the output end of the servo motor 65 and is threadedly connected to a connecting block 67;

[0082] A positioning block 69, which is fixedly disposed at the bottom of the movable hot and cold table 63, and the positioning block 69 is slidably connected to the upper surface of the transverse sliding carrier 62;

[0083] The servo cylinder 68 is fixedly embedded in the inner bottom wall of the transverse sliding carrier plate 62 , and the output end of the servo cylinder 68 is fixedly connected to the positioning block 69 . The maximum telescopic range of the servo cylinder 68 is the distance between the oil inlet nozzle 471 and the air inlet nozzle 472 .

[0084] The movable hot and cold stage 63 includes a hot and cold carrier 631, a transparent cover 632, a positioning groove 633, a fixed seat 635 and a fixed pin 6310. The transparent cover 632 is rotatably arranged on one side of the top of the hot and cold carrier 631. The fixed pin 6310 is slidably connected to the other side of the hot and cold carrier 631. The fixed pin 6310 is movably plugged with the transparent cover 632. The movable hot and cold stage 63 adopts the HCP421V-MP probe hot and cold stage, which can achieve adjustment from -190 to 1200 degrees Celsius.

[0085] The positioning groove 633 is provided on the side of the hot and cold carrier 631 opposite to the transparent cover plate 632. The blocking pieces 636 are provided inside the two ends of the positioning groove 633 on the hot and cold carrier 631. The blocking pieces 636 are hollow for medium circulation and are made of high temperature resistant rubber as a whole.

[0086] The fixing seat 635 is fixedly arranged on one side of the cold and hot carrier 631 , the three-way solenoid valve 6311 is installed inside the other side of the cold and hot carrier 631 , and the plug connector 638 is fixedly installed on the outside of the fixing seat 635 .

[0087] One group of blocking members 636 is fixedly installed in the positioning groove 633, and the other group is slidably connected in the positioning groove 633. A pressure gauge 6312 is installed between the slidably arranged blocking member 636 and the three-way solenoid valve 6311. A push rod 6314 is movably hinged on the top of one side of the transparent cover 632. A sliding groove 6313 is provided on the inner top of one side of the hot and cold carriers 631. A wedge-shaped sliding member 637 is slidably arranged inside the sliding groove 6313. One end of the wedge-shaped sliding member 637 is movably hinged to the push rod 6314, and the other end of the wedge-shaped sliding member 637 is movably sleeved on the outer surface of the middle part of the slidably arranged blocking member 636.

[0088] The plug connector 638 includes a plug tube 6381, a sliding seal 6382 and a spring 6383;

[0089] The sliding seal 6382 includes a T-shaped plug 63821, a first hollow positioning frame 63822, a rubber sealing sleeve 63823, a connecting shaft 63824 and a second hollow positioning frame 63825. The T-shaped plug 63821 and the second hollow positioning frame 63825 are fixedly arranged at both ends of the connecting shaft 63824, the first hollow positioning frame 63822 is fixedly arranged on the outer surface of the end of the T-shaped plug 63821, the rubber sealing sleeve 63823 is fixedly arranged on the outer surface of the front end of the T-shaped plug 63821, and the spring 6383 is movably sleeved on the outer surface of the connecting shaft 63824.

[0090] A large diameter inner cavity is provided in the middle of the cannula 6381 , and the first hollow positioning frame 63822 and the spring 6383 are both slidably arranged in the large diameter inner cavity, and the T-shaped plug 63821 and the second hollow positioning frame 63825 are slidably arranged inside the two ends of the cannula 6381 .

[0091] Working principle: When the device is used, it includes the following steps:

[0092] Step 1: Capillary assembly;

[0093] By pulling the fixed latch 6310 outwards, and then flipping the transparent cover 632 upwards, the transparent cover 632 pulls the wedge-shaped sliding member 637 to slide through the push rod 6314, and the capillary silicon tube 634 is placed in the positioning groove 633, and one end of the capillary silicon tube 634 is inserted into the fixed blocking member 636, and then the transparent cover 632 is closed. At this time, the push rod 6314 pushes the wedge-shaped sliding member 637 to slide, so that the movable blocking member 636 is inserted into the other end of the capillary silicon tube 634, and the middle part of the blocking member 636 is hollow. At this time, the capillary silicon tube 634 is fixed, and then the hot and cold carrier 631 is started to adjust the temperature of the capillary silicon tube 634, so that the test temperature reaches the actual temperature of the reservoir;

[0094] Step 2: Material loading;

[0095] The servo motor 65 is started to drive the driving screw 66 to rotate, so that the transverse sliding carrier 62 drives the movable hot and cold table 63 to move closer to the crude oil inlet and outlet mechanism 4, so that the plug connector 638 for injecting crude oil is inserted into the oil inlet nozzle 471. At this time, the plug 6381 and the outer wall of the sealing gasket 4702 on the inner wall of the oil inlet nozzle 471 are tightly fitted to achieve sealing. At the same time, the ejector pin 4704 and the end of the sliding seal 6382 are abutted, so that the sliding seal 6382 moves away from the oil inlet nozzle 471. At this time, the spring 6383 is compressed, and the T-shaped plug 63821 is no longer tightly attached to the plug 63 81, at this time, by starting the pressurized air pump 43, the pressurized air pump 43 injects air into the top of the tank body 411 through the air inlet three-way valve 44, so that the air pushes the piston 412 to move downward, so that the crude oil at the bottom of the tank body 411 is pressed into the oil inlet nozzle 471, and then enters the capillary silicon tube 634 through the plug connector 638 and the fixed blocking member 636, and then the servo motor 65 is reversed, so that the plug connector 638 is pulled out from the oil inlet nozzle 471, and at this time the spring 6383 pushes the T-shaped plug 63821 to reset, completing the blocking and sealing, and completing the crude oil injection;

[0096] At this time, the carbon dioxide compression storage tank 52 and the plunger pump 51 are turned on, and the carbon dioxide in the carbon dioxide compression storage tank 52 is pumped into the capillary silicon tube 634 through the plunger pump 51, and the pressure value is observed by the pressure gauge 6312. When the pressure reaches the target value, the three-way solenoid valve 6311 is closed to complete the carbon dioxide injection, and ensure that the pressure is the same as the actual pressure value of the reservoir;

[0097] Step 3: Observation;

[0098] During the carbon dioxide perfusion process, the infrared camera 31 and the Raman probe 32 are immediately started, and the carbon dioxide concentration is measured by the 532nm Raman probe 32 to understand its diffusion rate. The infrared camera 31 with a wavelength of 1700nm is used to observe the interaction between carbon dioxide and crude oil in the high-temperature and high-pressure capillary silicon tube 634 through infrared imaging technology, and the captured images are recorded. At the same time, the infrared microscope 34 is started to conduct real-time observation from the outside of the test equipment box 1;

[0099] Step 4: Clean the object being observed;

[0100] Start the servo cylinder 68 to drive the movable hot and cold table 63 to move inward, so that the two sets of plug connectors 638 are facing the air inlet nozzle 472 and the sewage discharge nozzle 473, and then start the servo motor 65 to drive the driving screw 66 to rotate, so that the transverse sliding carrier 62 drives the movable hot and cold table 63 to move close to the crude oil inlet and outlet mechanism 4, so that the plug connector 638 for filling crude oil is inserted into the air inlet nozzle 472, and the plug connector 638 for discharging materials is inserted into the sewage discharge nozzle 473, and then start the three-way solenoid valve 6311 to connect the sliding blocking member 636 with the sewage discharge nozzle 473. At this time, the high-pressure air inside the pressurized cleaning gas tank 42 enters the capillary silicon tube 634 to blow the crude oil material outward, and finally the crude oil material after the test enters the sewage storage box 48 for storage;

[0101] Then the servo cylinder 68 and the servo motor 65 drive the movable hot and cold table 63 to reset. At this time, the material inside the capillary silicon tube 634 is emptied and waits for the next test. By changing one of the variables among the pressure, temperature and carbon dioxide infusion volume each time, a control test is carried out. There is no need to repeatedly plug and unplug the capillary silicon tube 634, which is convenient for operation and effectively avoids damage to the capillary silicon tube 634.

[0102] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An infrared imaging monitoring device for the interaction between carbon dioxide and crude oil, comprising a test equipment box (1), characterized in that: An integrated sample platform (6) is provided inside the upper end of the test equipment box (1); a crude oil inlet and outlet mechanism (4) is provided on one side of the integrated sample platform (6); an observation mechanism (3) is provided on the other side and the top of the integrated sample platform (6); and a carbon dioxide feeding mechanism (5) is installed at the bottom of the integrated sample platform (6); The crude oil inlet and outlet mechanism (4) comprises a crude oil feed tank (41) and a pressurized clean gas tank (42), and plug-in connectors (47) are provided below the crude oil feed tank (41) and the pressurized clean gas tank (42); The observation mechanism (3) comprises an infrared camera (31) and a Raman probe (32) installed on the top of the test equipment box (1), and an infrared microscope (34) installed on the side wall of the test equipment box (1); The integrated sample stage (6) comprises a movable hot and cold stage (63), a capillary silicon tube (634) is movably connected inside the movable hot and cold stage (63), both ends of the capillary silicon tube (634) are movably plugged with plugging pieces (636), one side of the movable hot and cold stage (63) is equipped with two sets of plug connectors (638), and the other side of the movable hot and cold stage (63) is equipped with a carbon dioxide conduit (639), and the carbon dioxide conduit (639) is connected to the carbon dioxide feeding mechanism (5); One group of the blocking pieces (636) is connected to a group of plug connectors (638), and a three-way solenoid valve (6311) is installed between another group of the blocking pieces (636), the carbon dioxide conduit (639) and another group of plug connectors (638); The plug connector (638) is movably plugged into the plug-in connector (47); The integrated sample stage (6) further comprises: A supporting slide rail (61) fixedly disposed on the top of the microscope observation platform (35); A transverse sliding carrier plate (62) is slidably disposed on the top of the supporting slide rail (61), and the movable hot and cold table (63) is longitudinally slidably disposed on the transverse sliding carrier plate (62); A slide groove (64) is provided on the top of the supporting slide rail (61); A servo motor (65) fixedly mounted on the top of the lower end of the test equipment box (1); A connecting block (67) which is slidably disposed in the slide groove (64), wherein the connecting block (67) is fixedly connected to the transverse sliding carrier plate (62); A driving screw rod (66) is fixedly arranged at the output end of the servo motor (65), and the driving screw rod (66) is threadedly connected to the connecting block (67); A positioning block (69) is fixedly arranged at the bottom of the movable hot and cold table (63), and the positioning block (69) is slidably connected to the upper surface of the transverse sliding carrier plate (62); A servo cylinder (68) fixedly embedded in the inner bottom wall of the transverse sliding carrier plate (62), wherein the output end of the servo cylinder (68) is fixedly connected to a positioning block (69); The movable hot and cold table (63) comprises a hot and cold carrier (631), a transparent cover (632), a positioning groove (633), a fixed seat (635) and a fixed latch (6310); the transparent cover (632) is rotatably arranged on one side of the top of the hot and cold carrier (631); the fixed latch (6310) is slidably connected to the other side of the hot and cold carrier (631); the fixed latch (6310) is movably plugged into the transparent cover (632); The positioning groove (633) is provided on a side of the hot and cold carrier (631) opposite to the transparent cover plate (632), and the blocking member (636) is arranged inside both ends of the positioning groove (633) on the hot and cold carrier (631); The fixing seat (635) is fixedly arranged on one side of the cold and hot carrier (631), the three-way solenoid valve (6311) is installed inside the other side of the cold and hot carrier (631), and the plug connector (638) is fixedly installed on the outside of the fixing seat (635); One group of the blocking members (636) is fixedly installed in the positioning groove (633), and the other group is slidably connected in the positioning groove (633), and a pressure gauge (6312) is installed between the slidably arranged blocking member (636) and the three-way solenoid valve (6311), a push rod (6314) is movably hinged on the top of one side of the transparent cover plate (632), a sliding groove (6313) is provided on the inner top of one side of the hot and cold carrier (631), and a wedge-shaped sliding member (637) is slidably arranged inside the sliding groove (6313), one end of the wedge-shaped sliding member (637) is movably hinged to the push rod (6314), and the other end of the wedge-shaped sliding member (637) is movably sleeved on the outer surface of the middle part of the slidably arranged blocking member (636).

2. The infrared imaging monitoring device for the interaction between carbon dioxide and crude oil according to claim 1, characterized in that: The crude oil inlet and outlet mechanism (4) further comprises a pressurized air pump (43), an air inlet three-way valve (44) being installed between the output end of the pressurized air pump (43) and the crude oil feed tank (41) and the pressurized clean air tank (42), and the crude oil feed tank (41) comprises a tank body (411) and a piston member (412) slidably arranged inside the tank body (411).

3. The infrared imaging monitoring device for the interaction between carbon dioxide and crude oil according to claim 2, characterized in that: A mounting seat (45) is fixedly mounted on the upper side wall of the test equipment box (1), a dirt storage box (48) is fixedly mounted on the lower side wall of the test equipment box (1), and the plug-in connector (47) comprises three groups of oil inlet nozzles (471), air inlet nozzles (472), and dirt discharge nozzles (473) of identical structure fixed on the mounting seat (45), the oil inlet nozzle (471) being connected to a crude oil feed tank (41), the air inlet nozzle (472) being connected to a pressurized clean gas tank (42), and a dirt discharge pipe (46) being installed between the dirt discharge nozzle (473) and the dirt storage box (48).

4. The infrared imaging monitoring device for the interaction between carbon dioxide and crude oil according to claim 3, characterized in that: The plug-in connector (47) comprises an outer tube (4701), a sealing gasket (4702), a hollow bracket (4703) and a ejector pin (4704), wherein the sealing gasket (4702) is fixedly connected to the inner wall of the front end of the outer tube (4701), the hollow bracket (4703) is fixedly installed on the inner wall of the end of the outer tube (4701), and the ejector pin (4704) is fixedly arranged in the middle of the hollow bracket (4703).

5. The infrared imaging monitoring device for the interaction between carbon dioxide and crude oil according to claim 1, characterized in that: The carbon dioxide feeding mechanism (5) comprises a plunger pump (51) and a carbon dioxide compression storage tank (52) fixedly mounted on the bottom of the test equipment box (1); the top ends of the plunger pump (51) and the carbon dioxide compression storage tank (52) are connected to a carbon dioxide conduit (639); a suspension bracket (33) is installed between the top ends of the infrared camera (31) and the Raman probe (32) and the inner top of the test equipment box (1); one end of the infrared microscope (34) passes through the side wall of the test equipment box (1); a screen display control switch (2) is installed on the outer surface of the test equipment box (1); a microscopic observation platform (35) is installed on the lower surface of the middle part of the test equipment box (1); and the integrated sample stage (6) is arranged above the microscopic observation platform (35).

6. The infrared imaging monitoring device for the interaction between carbon dioxide and crude oil according to claim 5, characterized in that: The plug connector (638) includes a plug tube (6381), a sliding seal (6382) and a spring (6383); The sliding seal (6382) comprises a T-shaped plug (63821), a first hollow positioning frame (63822), a rubber sealing sleeve (63823), a connecting shaft (63824) and a second hollow positioning frame (63825); the T-shaped plug (63821) and the second hollow positioning frame (63825) are fixedly arranged at both ends of the connecting shaft (63824); the first hollow positioning frame (63822) is fixedly arranged on the outer surface of the end of the T-shaped plug (63821); the rubber sealing sleeve (63823) is fixedly arranged on the outer surface of the front end of the T-shaped plug (63821); and the spring (6383) is movably sleeved on the outer surface of the connecting shaft (63824); A large diameter inner cavity is provided in the middle of the cannula (6381), the first hollow positioning frame (63822) and the spring (6383) are both slidably arranged in the large diameter inner cavity, and the T-shaped plug (63821) and the second hollow positioning frame (63825) are slidably arranged inside the two ends of the cannula (6381).

7. The method of the infrared imaging monitoring device for the interaction between carbon dioxide and crude oil according to any one of claims 1 to 6, characterized in that: It includes the following steps: Step 1: Capillary assembly; Place the capillary silicon tube (634) into the positioning groove (633), close the transparent cover plate (632), and insert the sealing pieces (636) at both ends into the interior of the capillary silicon tube (634); Step 2: Material loading; The servo motor (65) is started to move the movable hot and cold table (63) toward the crude oil inlet and outlet mechanism (4), so that a set of plug connectors (638) are inserted into the oil inlet nozzle (471), and the pressurized air pump (43) is started to pressurize the crude oil at the bottom of the tank body (411) into the oil inlet nozzle (471). The servo motor (65) is reversed to reset the movable hot and cold table (63), and the carbon dioxide compression storage tank (52) and the plunger pump (51) are started to inject carbon dioxide and adjust the pressure at the same time; Step 3: Observation; The infrared camera (31) and the Raman probe (32) are started, the Raman probe (32) measures the concentration of carbon dioxide, the infrared camera (31) records the reaction process, and the infrared microscope (34) observes the reaction process in real time; Step 4: Clean the object being observed; The servo cylinder (68) is started so that the two sets of plug connectors (638) face the air inlet nozzle (472) and the sewage discharge nozzle (473), and the servo motor (65) is started so that the two sets of plug connectors (638) are respectively inserted into the air inlet nozzle (472) and the sewage discharge nozzle (473), and the high-pressure air inside the pressurized cleaning gas tank (42) enters the capillary silicon tube (634), so that the crude oil material after the test enters the sewage storage box (48) for storage, and the cleaning is completed.

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