A shale thermal pressurization hydrocarbon generation and expulsion simulation system and method based on multiple types of containers

Abstract

The application relates to the technical field of oil and gas geochemistry experiments, in particular to a shale hydrocarbon generation and expulsion simulation system and method based on multiple types of containers, which comprises a hydrocarbon generation autoclave unit, a tubular furnace heating unit, a hydraulic sealing unit, a liftable integrated platform unit, a pressure monitoring and product collection and metering unit and a computer control unit. The shale sample hydrocarbon generation and expulsion simulation is completed through mutual cooperation of the units, the sample area temperature is uniformly and accurately controlled, the hydrocarbon generation autoclave is automatically sealed and disassembled, and the reaction autoclave body is rapidly cooled and cleaned after the experiment is completed. The temperature of the upper and lower tubular furnaces is controlled by calculating the combined stable weight, the temperature difference consistency coefficient, the temperature control utility and the target control temperature. The application can simulate different types and specifications of samples by selecting different reaction containers, and can uniformly heat the sample chamber in the autoclave body during the heating process, which is beneficial to improving the accuracy and reliability of the experiment.

Description

Technical Field

[0001] This application relates to the field of oil and gas geochemical experimental technology, specifically to a shale thermal compression hydrocarbon generation and expulsion simulation system and method based on multiple types of containers. Background Technology

[0002] Hydrocarbon generation thermal simulation experiments are an important means of evaluating the hydrocarbon generation potential and resources of source rocks. The experimental apparatus can be classified into three types according to its openness: open system, closed system, and semi-open system. Among them, the most commonly used apparatus for closed systems is the autoclave. This type of apparatus has a simple structure, is easy to manufacture, can be filled with large or small amounts of sample, and is suitable for a wide variety of sample types.

[0003] Currently, high-pressure autoclave devices mainly include the gold tube hydrocarbon generation simulation device and the GF-3 type high-pressure autoclave hydrocarbon generation simulation device. Existing heating methods for high-pressure autoclave devices mainly include box-type heating furnaces, electric heating rods, and medium-frequency induction furnaces. Because the autoclave is sealed with flanges and graphite gaskets, the heat from the heating rods or medium-frequency induction furnace may not fully cover both ends of the sample chamber during heating, resulting in a large temperature difference from top to bottom. This uneven heating of the sample chamber within the high-temperature autoclave affects the chemical reaction of the sample, thus impacting the accuracy and stability of the experiment. Secondly, the sealing process of the autoclave requires manually tightening the graphite gasket between the upper and lower flanges, which is time-consuming and labor-intensive. Furthermore, the autoclave is usually fixed inside the heating system, and the cooling process is slow due to the residual heat of the heating system. Additionally, the vertical placement of the autoclave makes internal cleaning difficult after the experiment. Summary of the Invention

[0004] To address the aforementioned technical problems, a shale thermal compression hydrocarbon generation and expulsion simulation system and method based on multiple types of containers is provided to solve the existing issues.

[0005] The solution to the technical problem addressed in this application is to provide a shale thermal compression hydrocarbon generation and expulsion simulation system and method based on multiple types of containers, comprising the following steps:

[0006] In a first aspect, embodiments of this application provide a shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers, including a hydrocarbon generation high-pressure reactor unit (100), a tubular furnace heating unit (200), a hydraulic sealing unit (300), a liftable integrated platform unit (400), a pressure monitoring and product collection and metering unit (500), and a computer control unit (600), wherein:

[0007] The hydrocarbon generation autoclave unit (100) is placed horizontally and passes through the tubular furnace heating unit (200). The two are closely fitted but not integrated. The tubular furnace heating unit (200), the hydraulic sealing unit (300), and the pressure monitoring and product collection and metering unit (500) are all fixedly mounted on the liftable integrated platform unit (400). The computer control unit (600) is connected to the hydrocarbon generation autoclave unit (100), the tubular furnace heating unit (200), the hydraulic sealing unit (300), the liftable integrated platform unit (400), and the pressure monitoring and product collection and metering unit (500), respectively.

[0008] Preferably, the high-pressure reactor unit (100) for hydrocarbon generation includes a high-pressure reactor body (101), a sealing gasket (102), a pressure cap (103), a plug (104), a temperature sensor (105), a locking cap (106), a graphite pad (107), a filling block (108), a sample chamber (109), a filter (110), a through hole (111), a fine graphite pad (112), a temperature test hole (113), a confining pressure hole (114), and a sample boat (115).

[0009] Preferably, the high-pressure vessel body (101) has two types, namely high-pressure vessel body (101a) and high-pressure vessel body (101b), wherein:

[0010] The sample chamber (109) is located in the middle of the autoclave body (101a), and a sample boat (115) is filled inside it. One side of the autoclave body (101a) has a through hole (111), and the other side is connected to a sealing assembly consisting of a plug (104a), a graphite gasket (107), a sealing pressure gasket (102), a pressure cap (103), and a locking cap (106). Inside the sample chamber (109), one side of the through hole has a filter (110), and the other side of the sealing assembly has a filling block (108). The plug (104a) has a non-... A through hole allows a temperature sensor (105) to penetrate the autoclave for temperature measurement. A graphite pad (107) and a sealing gasket (102) pass through the narrow section of the plug (104) and are then secured at the wide section. The pressure cap (103) and the autoclave body (101) are tightly connected by threads, and the locking cap (106) and the plug (104a) are also connected by threads. The sample chamber (109) inside the autoclave body (101a) can be used directly as a sample reaction vessel, or a sample boat or other sample reaction vessel can be added inside.

[0011] The high-pressure vessel body (101b) differs from the high-pressure vessel body (101a) in four ways: First, the plug (104b) is a through hole; second, the sample chamber (109) is filled with a capsule sample reaction container (108b) instead of a sample boat (115), and the capsule sample reaction container has a filler line at each end, with the two lines passing through the through hole (111) and the plug (104b) respectively; third, in addition to the through hole (111), there is also a temperature test hole (113) and a confining pressure hole (114) on one side of the through hole; fourth, a fine graphite pad (112) and a short pressure cap (110b) can pass through the outside of the through hole (111) and the plug (104b) in sequence. By compacting the fine graphite pad (112) with the short pressure cap (110b), a seal can be formed between the extension line of the capsule sample reaction container and the high-pressure vessel body.

[0012] Preferably, the sample boat (115) is made of zircon and consists of an upper part (1151), a lower part (1152), and a pressure relief port (1153). The protruding part of the upper part (1151) and the groove of the lower part can be integrated. The sample boat (115) can be filled with samples. The sample boat (115) is placed inside the sample chamber (109). The lower part (1152) of the sample boat has a pressure relief port (1153) on one side. This pressure relief port (1153) can prevent the sample inside the sample boat from breaking and facilitates the removal of the sample boat from the high-pressure reactor after the experiment.

[0013] Preferably, the filter (110) has kinetic energy that allows only fluid products to pass through while preventing solid products from passing through.

[0014] Preferably, the tubular furnace heating unit (200) includes an upper tubular furnace (201), a lower tubular furnace (202), a high-pressure autoclave limiting groove (203), a temperature sensor group (204), and a latch (205), wherein:

[0015] The upper tube furnace (201) and the lower tube furnace (202) contain a high-pressure vessel limiting groove (203). The upper tube furnace (201) can be adjusted in angle to open and close the tube furnace. The upper and lower tube furnaces have locks (205) on the outside to lock the upper and lower tube furnaces. Both the upper and lower tube furnaces contain a temperature sensor group (204).

[0016] The tubular furnace is used to control the temperature of the high-pressure reactor for generating hydrocarbons.

[0017] Preferably, the hydraulic sealing unit (300) includes a coupling (301), a hydraulic sealer (302), a movable support frame (303), a support frame moving platform (304), a limiter (305), and a connecting rod (306), wherein:

[0018] The hydraulic seal (302) has a butt joint (301) on one side. The hydraulic seal is fixed on a movable bracket (303). The movable bracket (303) can be freely adjusted on the support frame moving platform (304). One side of the connecting rod (306) is connected to the butt joint (301), and the other side is connected to the plug (104). The limiter (305) is a movable part, which plays a role in controlling the butt joint (301) to maintain a fixed position when the movable bracket (303) is adjusted to an accurate position.

[0019] The hydraulic sealing unit is used to automatically control the sealing and disassembly of the hydrocarbon generation autoclave.

[0020] Preferably, the liftable integrated platform unit (400) includes an experimental table (401), a tilting cylinder (402), a tiltable platform (403), a pressure vessel limiter (404), and a tubular furnace support base (405), wherein:

[0021] The test bench (401) has a tiltable platform (403) on its table surface. The tiltable platform (403) is provided with lifting power by tilting cylinder (402). The tiltable platform (403) has a high pressure vessel limiting and fixing device (404) and a tubular furnace support base (405) that can fix the tubular furnace heating unit (200) and the hydrocarbon generation high pressure vessel unit (100).

[0022] The tiltable platform is used to control the angle of the high-pressure reactor for generating hydrocarbons.

[0023] Preferably, the pressure monitoring and product collection and metering unit (500) includes a gas pressurization system (501), a vacuum system (502), a simulated gas collection and metering system (503), a pressure sensor (504), a pressure relief valve (505), valve 1 (506), valve 2 (507), valve 3 (508), a hydrocarbon discharge control valve (509), a surrounding rock pressure pump (510), a fluid pressure pump (511), and a cleaning tool (512).

[0024] Preferably, the pressure monitoring and product collection metering unit (500) has two connection methods:

[0025] When the high-pressure vessel body (101) is a high-pressure vessel body (101a), the gas pressurization system (501), vacuum system (502), simulated gas collection and metering system (503), pressure sensor (504), and pressure relief valve (505) are all connected to the through hole (111) of the hydrocarbon generation high-pressure vessel unit (100) through pipelines. Among them, the gas pressurization system (501), vacuum system (502), and simulated gas collection and metering system (503) each have independently controlled valves 1 (506), 2 (507), and 3 (508).

[0026] When the autoclave body is an autoclave body (101b), the connection method is different from that of the autoclave body (101a). The gas pressurization system (501), vacuum system (502), simulated gas collection and metering system (503), and pressure sensor (504) are all connected to the sample reaction container pipeline extending from the through hole (111) of the hydrocarbon generation autoclave unit (100) through pipelines. There is a hydrocarbon discharge control valve (509) between the sample reaction container pipeline and the gas pressurization system (501), vacuum system (502), simulated gas collection and metering system (503), pressure sensor (504), and pressure relief valve (505).

[0027] Preferably, the cleaning tool (512) consists of a handle (5121), a connecting rod (5122), a locking cap (5123), an upper pressure pad (5124), a base (5125), and degreased cotton (5126). The handle (5121) is connected to the connecting rod (5122). The locking cap (5123) and the upper pressure pad (5124) pass through the connecting rod (5122) in sequence. The bottom of the connecting rod (5122) has threads that can be connected to the threads in the groove of the base (5125). The degreased cotton (5126) is unfolded into a thin sheet and rolled upward from the bottom of the base (5125) into the groove of the base (5125). After being compacted by the upper pressure pad (5124), it is locked in place by the locking cap (5123). The locking cap (5123) and the connecting rod (5122) are connected by threads.

[0028] Preferably, the computer control unit (600) can automatically control the tubular furnace heating unit (200), the hydraulic sealing unit (300), the liftable integrated platform unit (400), and the pressure monitoring and product collection metering unit (500), and record and display the temperature and pressure data of the samples in the hydrocarbon generation autoclave unit (100).

[0029] Secondly, embodiments of this application also provide a shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers. The simulation method is implemented based on the aforementioned shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers. The implementation steps of the simulation method include:

[0030] The temperature of the top and bottom of the high-pressure vessel (101) at each moment is acquired in real time, as well as the temperature of the upper tube furnace (201) and the lower tube furnace (202) at each moment; multiple moments before each moment are recorded as the nearest neighbor monitoring period of each moment.

[0031] The temperature differences and fluctuations between the upper tube furnace and the top of the vessel, and between the lower tube furnace and the bottom of the vessel, at each moment during the nearest neighbor monitoring period are analyzed to obtain the joint stability weights at each moment during the nearest neighbor monitoring period.

[0032] By taking into account the temperature difference between the upper tube furnace and the top of the vessel, and the temperature difference between the lower tube furnace and the bottom of the vessel, within all times during the nearest neighbor monitoring period at each time moment, and combining the joint stability weight, the temperature difference consistency coefficient at each time moment is determined; the difference in the temperature difference consistency coefficient between the current time moment and different times during the nearest neighbor monitoring period is analyzed, and the temperature control effectiveness at the current time moment is calculated.

[0033] Based on the average temperature of the top and bottom of the vessel at the current moment, and the differences between these temperatures and the temperatures of the upper and lower tube furnaces, respectively, and in conjunction with the temperature control effectiveness, the target control temperature corresponding to the upper tube furnace and the target control temperature corresponding to the lower tube furnace at the current moment are obtained respectively. The computer control unit (600) controls the temperature of the upper and lower tube furnaces in the tube furnace heating unit (200) based on the target control temperature corresponding to the upper and lower tube furnaces.

[0034] Preferably, obtaining the joint stability weights at each time point within the nearest neighbor monitoring period includes:

[0035] The difference between the temperature of the upper tube furnace and the temperature at the top of the vessel body at each moment during the nearby monitoring period is denoted as the top temperature difference.

[0036] The average of the differences in the top temperature difference between each time point within the neighboring monitoring period and all other times is taken as the top thermal energy fluctuation degree at each time point within the neighboring monitoring period.

[0037] The difference between the temperature of the lower tube furnace and the temperature at the bottom of the vessel body at each moment during the nearby monitoring period is denoted as the bottom temperature difference.

[0038] The average value of the difference between the bottom temperature at each time point within the neighboring monitoring period and all other times is taken as the bottom thermal energy fluctuation at each time point within the neighboring monitoring period.

[0039] The difference between the top thermal energy fluctuation and the bottom thermal energy fluctuation is denoted as the thermal energy supply difference; the calculation result of an exponential function with the natural constant as the base and the negative number of the thermal energy supply difference as the exponent is used as the joint stability weight of each moment within the nearest neighbor monitoring period.

[0040] Preferably, determining the temperature difference consistency coefficient at each moment includes:

[0041] The difference between the top temperature difference and the bottom temperature difference at each time point within the nearby monitoring period is recorded as the relative temperature difference.

[0042] Calculate the ratio of the joint stability weight to the relative temperature difference, and use the sum of the ratios of all times within the nearest neighbor monitoring period at each time as the temperature difference consistency coefficient at each time.

[0043] Preferably, the temperature control effectiveness Vr at the current time q q The calculation method is as follows: Among them, Gr q Gr is the temperature difference uniformity coefficient at the current time q. q,m N is the temperature difference consistency coefficient at time m within the nearest neighbor monitoring period at the current time q. q ∈ represents the number of all times within the nearest neighbor monitoring period at the current time q, where ∈ is a preset value greater than 0.

[0044] Preferably, obtaining the target control temperature corresponding to the upper tube furnace at the current moment and the target control temperature corresponding to the lower tube furnace at the current moment includes:

[0045] The target control temperature As corresponding to the upper tube furnace at the current moment q q The calculation formula is: As q =Es q +exp(-Vr q )×(Gu q -Es q ), where Es q Let q be the temperature of the upper tube furnace at the current moment, and Vr be the temperature of the upper tube furnace. q Let Gu be the temperature control effectiveness at the current time q. q exp() is the average temperature of the top and bottom of the vessel at the current time q, and is an exponential function with the natural constant as the base.

[0046] The target controlled temperature Ax of the tubular furnace at the current time q q The calculation formula is: Ax q =Ex q +exp(-Vr q )×(Gu q -Ex q ), where Ex q Let q be the temperature of the lower tube furnace at the current moment.

[0047] Preferably, controlling the temperature of the upper and lower tube furnaces in the tube furnace heating unit (200) includes:

[0048] The current temperature of the upper tube furnace and its corresponding target temperature, as well as the temperature of the lower tube furnace and its corresponding target temperature, are input into the computer control unit to obtain the temperature control signal for the tube furnace. The tube furnace heating unit then controls the temperature of the upper and lower tube furnaces based on the temperature control signal.

[0049] This application has at least the following beneficial effects:

[0050] This application analyzes the temperature differences and fluctuations between the upper tubular furnace and the top temperature of the reactor body, and between the lower tubular furnace and the bottom temperature of the reactor body at each moment within the aforementioned neighboring monitoring period, to obtain the joint stability weights at each moment within the aforementioned neighboring monitoring period. Its beneficial effect lies in considering the temperature differences between the upper tubular furnace and the top temperature of the reactor body, and between the lower tubular furnace and the bottom temperature of the reactor body, to reflect the consistency of the heat energy provided by the upper and lower tubular furnaces to the high-pressure reactor for hydrocarbon generation, thus illustrating the stability of the joint effect of the upper and lower tubular furnaces in providing heat energy to the high-pressure reactor for hydrocarbon generation. By analyzing the temperature differences between the upper tubular furnace and the top temperature of the reactor body, and between the lower tubular furnace and the bottom temperature of the reactor body at all moments within the aforementioned neighboring monitoring period, the application obtains the joint stability weights at each moment. The temperature difference between the furnace temperature and the bottom temperature of the reactor body, combined with the aforementioned joint stability weights, determines the temperature difference consistency coefficient at each moment. Its beneficial effect lies in considering the consistency of the heating effect of the upper and lower tube furnaces on the high-pressure reactor body, thus illustrating the uniformity of heating of the entire high-pressure reactor body during the heating process. Analyzing the changes in the temperature difference consistency coefficient between the current moment and different moments within the aforementioned neighboring monitoring period, the temperature control effectiveness at the current moment is calculated. Its beneficial effect lies in considering the differences in the temperature difference consistency coefficient, reflecting the temperature control effect of the upper and lower tube furnaces on the high-pressure reactor body, so as to determine whether the temperature control adjustment intensity should be increased, ensuring that the entire high-temperature reactor body is heated evenly. The process ensures uniform heating. Based on the average temperatures of the top and bottom of the vessel at the current moment, and the differences between these temperatures and those of the upper and lower tube furnaces, and in conjunction with the temperature control effectiveness, the target control temperatures for the upper and lower tube furnaces at the current moment are obtained. The computer control unit 600 controls the temperatures of the upper and lower tube furnaces in the tube furnace heating unit 200 based on these target control temperatures. Its beneficial effect lies in analyzing the target control temperatures that should be adjusted for the upper and lower tube furnaces at the current moment, and then controlling these temperatures through the computer control unit. Intelligent temperature control of the upper and lower tubular furnaces in the tubular furnace heating unit ensures uniform heating of the sample chamber within the high-pressure reactor in the hydrocarbon generation unit, enhancing the intelligent control effect of the high-pressure reactor heating and thus improving the accuracy and reliability of the experiment. Secondly, the hydraulic sealing unit of this application controls the sealing state of the high-pressure reactor body using hydraulic methods, saving time and effort while providing a good sealing effect. The upper and lower tubular furnaces in the tubular furnace heating unit can be opened and closed via latches. After the experiment, the upper tubular furnace can be opened, allowing the hydrocarbon generation high-pressure reactor to cool down rapidly. The liftable integrated platform unit tilts the high-pressure reactor body through a liftable mechanism, reducing the difficulty of cleaning the high-pressure reactor body. Attached Figure Description

[0051] The following description, in conjunction with the accompanying drawings, provides a more detailed explanation of a shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers.

[0052] Figure 1 A block diagram of a shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers is provided for embodiments of this application;

[0053] Figure 2 This is a schematic diagram of a shale thermal compression hydrocarbon generation and expulsion simulation device provided in the embodiments of this application;

[0054] Figure 3 This is a schematic diagram of the high-pressure vessel body 101a provided in an embodiment of this application;

[0055] Figure 4 A schematic diagram of the high-pressure vessel body 101b provided in an embodiment of this application;

[0056] Figure 5 A schematic diagram of the sample boat 115 provided in an embodiment of this application;

[0057] Figure 6 A schematic diagram of a tubular furnace heating unit 200 provided in an embodiment of this application;

[0058] Figure 7 A schematic diagram of the hydraulic sealing unit 300 provided in an embodiment of this application;

[0059] Figure 8 A schematic diagram of the liftable integrated platform unit 400 provided in an embodiment of this application;

[0060] Figure 9 A schematic diagram of the pressure monitoring and product collection metering unit 500 provided in an embodiment of this application;

[0061] Figure 10 A schematic diagram of the cleaning tool 512 provided in an embodiment of this application;

[0062] Figure 11 A flowchart illustrating the steps of a shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers, provided in this application embodiment;

[0063] Figure 12 This is a schematic diagram of the installation of the temperature sensor in the high-pressure vessel 101 provided in an embodiment of this application;

[0064] Figure 13 A flowchart illustrating the steps of the method for obtaining the joint stability weights at each time point within the nearest neighbor monitoring period provided in this application embodiment. Detailed Implementation

[0065] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description, in conjunction with the accompanying drawings and implementation examples, provides a shale thermal compression hydrocarbon generation and expulsion simulation system and method based on multiple types of containers. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0067] Please see Figure 1 The diagram illustrates a block diagram of a shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers, according to an embodiment of this application. The system includes:

[0068] The shale thermal compression hydrocarbon generation and expulsion simulation system mainly consists of six parts: a high-pressure hydrocarbon generation reactor unit 100, a tubular furnace heating unit 200, a hydraulic sealing unit 300, a liftable integrated platform unit 400, a pressure monitoring and product collection and metering unit 500, and a computer control unit 600. The high-pressure hydrocarbon generation reactor unit 100, the tubular furnace heating unit 200, the hydraulic sealing unit 300, and the liftable integrated platform unit 400 are components of the shale thermal compression hydrocarbon generation and expulsion simulation device. A schematic diagram of the shale thermal compression hydrocarbon generation and expulsion simulation device provided in this embodiment is shown below. Figure 2 As shown, the hydrocarbon generation autoclave unit 100 is placed horizontally and passes through the tubular furnace heating unit 200. The two are tightly fitted but not integrated. The tubular furnace heating unit 200, the hydraulic sealing unit 300, and the pressure monitoring and product collection and metering unit 500 are all fixedly mounted on the liftable integrated platform unit 400. The computer control unit 600 is connected to the hydrocarbon generation autoclave unit 100, the tubular furnace heating unit 200, the hydraulic sealing unit 300, the liftable integrated platform unit 400, and the pressure monitoring and product collection and metering unit 500.

[0069] The hydrocarbon generation autoclave unit 100 includes: autoclave body 101, sealing gasket 102, pressure cap 103, plug 104, temperature sensor 105, locking cap 106, graphite pad 107, filling block 108, sample chamber 109, filter 110, through hole 111, 112-fine graphite pad, 113-temperature test hole, 114-confining pressure hole, and sample boat 115.

[0070] There are two types of high-pressure vessel bodies 101: high-pressure vessel body 101a and high-pressure vessel body 101b. The sample chamber 109 is located in the middle of the interior of high-pressure vessel body 101a, and a sample boat 115 is filled inside. One side of high-pressure vessel body 101 has a through hole 111, and the other side is connected to a sealing assembly consisting of a plug 104a, a graphite gasket 107, a sealing pressure pad 102, a pressure cap 103, and a locking cap 106. Inside the sample chamber 109, a filter 110 is located on one side of the through hole, and a filler block 108 is located on the other side of the sealing assembly. The plug 104a has a non-through hole through which the temperature sensor 105 penetrates the high-pressure vessel to measure temperature. The graphite gasket 107 and the sealing pressure pad 102 pass through the narrow diameter portion of the plug 104a and are then secured at the wider diameter portion. The pressure cap 103 and the high-pressure vessel body 101 are tightly connected by threads, and the locking cap 106 and the plug 104a are also connected by threads; secondly, the sample chamber 109 inside the high-pressure vessel body 101a can be directly used as a sample reaction container, or a sample boat or other sample reaction container can be added inside.

[0071] The high-pressure vessel 101b differs from the high-pressure vessel 101a in four ways. First, the plug 104b is a through hole. Second, the sample chamber 109 is filled with a capsule sample reaction container 108b instead of a sample boat 115, and the capsule sample reaction container has an injection / discharge line at each end, with the two lines passing through the through hole 111 and the plug 104b respectively. Third, besides the through hole 111, one side of the through hole also has a temperature testing hole 113 and a confining pressure hole 114. Fourth, a fine graphite pad 112 and a short pressure cap 110b can pass sequentially through the outside of both the through hole 111 and the plug 104b. The short pressure cap 110b compacts the fine graphite pad 112, forming a seal between the extension line of the capsule sample reaction container and the high-pressure vessel. Schematic diagrams of the high-pressure vessels 101a and 101b provided in this embodiment are shown below. Figure 3 and Figure 4 As shown;

[0072] Additionally, a schematic diagram of the sample boat 115 provided in this embodiment is shown below. Figure 5 As shown, the sample boat is made of zircon. Figure 5 The sample boat consists of an upper part 1151, a lower part 1152, and a pressure relief port 1153. The protruding part of the upper part 1151 and the groove of the lower part can be integrated. The sample boat can be filled with samples and placed inside the sample chamber 109. The lower part 1152 of the sample boat has a pressure relief port 1153 on one side. This pressure relief port can prevent the sample inside the sample boat from breaking and facilitate the removal of the sample boat from the high-pressure reactor after the experiment. Secondly, the filter (110) has the kinetic energy to allow only fluid products to pass through while preventing solid products from passing through.

[0073] A schematic diagram of the tubular furnace heating unit 200 provided in this embodiment is shown below. Figure 6 As shown, Figure 6The tubular furnace heating unit 200 described herein includes: an upper tubular furnace 201, a lower tubular furnace 202, a pressure vessel limiting groove 203, a temperature sensor group 204, and a locking buckle 205. The upper tubular furnace 201 and the lower tubular furnace 202 contain the pressure vessel limiting groove 203 inside. The upper tubular furnace 201 can be adjusted in angle to open and close. The upper and lower tubular furnaces are externally secured with locking buckles 205. Both the upper and lower tubular furnaces contain a temperature sensor group 204. The function of the tubular furnaces is to control the temperature of the hydrocarbon-generating pressure vessel.

[0074] A schematic diagram of the hydraulic sealing unit 300 provided in this embodiment is shown below. Figure 7 As shown, Figure 7 The hydraulic sealing unit 300 described herein includes: a connector 301, a hydraulic sealer 302, a movable support frame 303, a support frame moving platform 304, a limiter 305, and a connecting rod 306. The hydraulic sealer 302 has a connector 301 on one side and is fixed to the movable support frame 303. The movable support frame 303 can be freely adjusted in position on the support frame moving platform 304. The connecting rod 306 is connected to the connector 301 on one side and to the plug 104 on the other side. The limiter 305 is a movable part that controls the connector 301 to maintain a fixed position when the movable support frame 303 is adjusted to the correct position. The function of the hydraulic sealing unit is to automatically control the sealing and disassembly of the hydrocarbon-generating high-pressure reactor.

[0075] A schematic diagram of the liftable integrated platform unit 400 provided in this embodiment is shown below. Figure 8 As shown, Figure 8 The liftable integrated platform unit 400 described herein includes: an experimental table 401, a tilting cylinder 402, a tiltable platform 403, a pressure vessel limiting and fixing device 404, and a tubular furnace support base 405. The experimental table 401 has a platform 403 on its surface. The tiltable platform 403 is powered by the tilting cylinder 402. The tiltable platform 403 has a pressure vessel limiting and fixing device 404 and a tubular furnace support base 405 that can fix the tubular furnace heating unit 200 and the hydrocarbon generation pressure vessel unit 100. The tiltable platform controls the angle of the hydrocarbon generation pressure vessel.

[0076] A schematic diagram of the pressure monitoring and product collection metering unit 500 provided in this embodiment is shown below. Figure 9 As shown, Figure 9The pressure monitoring and product collection and metering unit 500 described herein includes: a gas pressurization system 501, a vacuum system 502, a simulated gas collection and metering system 503, a pressure sensor 504, a pressure relief valve 505, valve 1 (506), valve 2 (507), valve 3 (508), a hydrocarbon discharge control valve 509, a surrounding rock pressure pump 510, a fluid pressure pump 511, and a cleaning tool 512. The pressure monitoring and product collection and metering unit 500 has two connection methods: First, when the autoclave body is 101a: the gas pressurization system 501, vacuum system 502, simulated gas collection and metering system 503, pressure sensor 504, and pressure relief valve 505 are all connected to the through-hole 111 of the hydrocarbon generation autoclave unit 100 via pipelines. Among them, the gas pressurization system 501, the vacuum system 502 and the simulated gas collection and metering system 503 each have independently controlled valves 506-1, 507-2 and 508-3; the second type, when the high pressure vessel body is 101b: the difference from the connection method (1) is that the gas pressurization system 501, the vacuum system 502, the simulated gas collection and metering system 503 and the pressure sensor 504 are all connected to the sample reaction vessel pipeline extending from the through hole 111 of the hydrocarbon generation high pressure vessel unit 100 through pipelines, and there is a hydrocarbon discharge control valve 509 between the sample reaction vessel pipeline and the gas pressurization system 501, the vacuum system 502, the simulated gas collection and metering system 503, the pressure sensor 504 and the pressure relief valve 505.

[0077] The gas pressurization system 501 is used to inject high-pressure gas into the hydrocarbon-generating autoclave to test the system's sealing performance. The vacuum system 502 is used to evacuate the gas inside the hydrocarbon-generating autoclave to simulate an oxygen-free underground environment. The simulated gas metering system 503 is used for collecting and metering gas products. The cleaning tool 512 is used to clean the inside of the hydrocarbon-generating autoclave, and the hydrocarbon discharge control valve is used to control the hydrocarbon discharge pressure.

[0078] The cleaning tool 512 consists of six parts: a handle 5121, a connecting rod 5122, a locking cap 5123, an upper pressure pad 5124, a base 5125, and absorbent cotton 5126. The handle 5121 is connected to the connecting rod 5122. The locking cap 5123 and the upper pressure pad 5124 pass sequentially through the connecting rod 5122. The bottom of the connecting rod 5122 has threads that can connect with the threads in the groove of the base 5125. The absorbent cotton 5126 is unfolded into a thin sheet and rolled upwards from the bottom of the base 5125 into the groove of the base 5125. After being compacted by the upper pressure pad 5124, it is locked in place by the locking cap 5123. The locking cap 5123 is threadedly connected to the connecting rod 5122. A schematic diagram of the cleaning tool 512 provided in this embodiment is shown below. Figure 10 As shown.

[0079] The computer control unit 600 is connected to the hydrocarbon generation autoclave unit 100, the tubular furnace heating unit 200, the hydraulic sealing unit 300, the liftable integrated platform unit 400, and the pressure monitoring and product collection and metering unit 500, respectively, to control the operation of each unit and to record and display the temperature and pressure data of the samples in the hydrocarbon generation autoclave unit 100.

[0080] Based on the same inventive concept as described above, this application also provides a shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers. The simulation method is implemented on the basis of the shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers. The flowchart of the shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers provided in this embodiment is as follows: Figure 11 As shown, the implementation steps of the simulation method include:

[0081] Step 1: Real-time acquisition of the upper and lower tube furnace temperatures in the tubular furnace heating unit 200 at each moment, and the top and bottom temperatures of the high-pressure reactor body 101 in the hydrocarbon generation high-pressure reactor unit 100 at each moment, wherein the high-pressure reactor body 101 can be filled with various types of sample reaction containers.

[0082] Based on the above-mentioned shale thermal compression hydrocarbon generation and expulsion simulation system, after the high-pressure vessel 101 is sealed by flanges and graphite gaskets, the heating unit 200 of the tubular furnace is heated by a box-type heating furnace, electric heating rod, or medium-frequency induction furnace. During the heating process, the heating rod or medium-frequency induction furnace may not be able to completely cover both ends of the sample chamber 109, resulting in a large temperature difference between the two ends of the sample chamber 109 and uneven heating inside the sample chamber 109. Secondly, the existing high-pressure vessel device requires manual tightening of the graphite gasket between the upper and lower flanges during the sealing process, which is time-consuming and labor-intensive. Moreover, the high-pressure vessel device is usually fixed inside the heating system, and the cooling process of the high-pressure vessel device is relatively slow due to the residual heat of the heating system. In addition, the high-pressure vessel is vertically placed, making it difficult to clean the inside of the vessel after the experiment.

[0083] Based on the above analysis, in the process of shale thermal compression hydrocarbon generation and expulsion simulation, the computer control unit 600 intelligently controls the stable operation of each part of the shale thermal compression hydrocarbon generation and expulsion simulation system, thereby improving the heating effect, sealing effect and cooling effect during the shale thermal compression hydrocarbon generation and expulsion simulation.

[0084] Therefore, in order to solve the problem of uneven heating in the sample chamber 109 of the high-pressure reactor 101, the heating temperature of the tubular furnace heating unit 200 is precisely controlled by receiving the temperature data monitored in real time by the temperature sensor 105 in the hydrocarbon generation high-pressure reactor unit 100 and the temperature sensor group 204 in the tubular furnace heating unit 200.

[0085] Temperature sensor arrays are installed at the top and bottom of the high-pressure reactor body in the hydrocarbon generation autoclave unit, which is directly connected to the upper and lower tubular furnaces. A schematic diagram of the temperature sensor installation in the high-pressure reactor body 101 provided in this embodiment is shown below. Figure 12 As shown, Figure 11 In the diagram, 'A' represents a temperature sensor. The average temperature monitored by all temperature sensors at the top of the autoclave at each moment is taken as the top temperature of the autoclave at that moment, and the average temperature monitored by all temperature sensors at the bottom of the autoclave at each moment is taken as the bottom temperature of the autoclave at that moment. Thus, the temperature sensors are used to collect in real time the top temperature of the autoclave in the hydrocarbon-generating autoclave unit directly connected to the upper tubular furnace and the bottom temperature of the autoclave in the hydrocarbon-generating autoclave unit directly connected to the lower tubular furnace.

[0086] Secondly, based on the temperature sensor group 204 contained in the upper and lower tube furnaces in the tube furnace heating unit, the average temperature monitored by all temperature sensors in the upper tube furnace at each time moment is taken as the upper tube furnace temperature at each time moment, and the average temperature monitored by all temperature sensors in the lower tube furnace at each time moment is taken as the lower tube furnace temperature at each time moment. The acquisition time interval is t, and the upper tube furnace temperature, lower tube furnace temperature, top temperature of the vessel body, and bottom temperature of the vessel body at each time moment are obtained.

[0087] In this embodiment, the data collection time interval is 2 seconds. As for other implementation methods, the implementer can set the time interval according to the actual situation.

[0088] Thus, the temperatures of the upper tube furnace, lower tube furnace, top of the vessel, and bottom of the vessel at each moment are obtained.

[0089] Step 2: Analyze the temperature differences and fluctuations between the upper tube furnace and the top temperature of the vessel, and between the lower tube furnace and the bottom temperature of the vessel at each time point within the neighbor monitoring period, and obtain the joint stability weights at each time point within the neighbor monitoring period.

[0090] Since the upper and lower tubular furnaces in the tubular furnace heating unit are located adjacent to different positions of the high-pressure vessel in the hydrocarbon generation autoclave unit, and the heating of the tubular furnaces is affected by voltage fluctuations at different times, in the shale thermal compression hydrocarbon generation and expulsion simulation process, if the temperature difference between the upper and lower tubular furnaces and the temperature at different positions on the autoclave is poor, it indicates that the heating effect of the upper and lower tubular furnaces on the autoclave is inconsistent. In this case, it cannot be ensured that the entire high-temperature autoclave is heated uniformly during the heating process, which can easily lead to a large temperature difference from top to bottom in the sample chamber of the hydrocarbon generation autoclave unit, reducing the intelligent control effect of the autoclave heating device. Therefore, in order to achieve more precise intelligent control of the heating temperature of the tubular furnaces, it is necessary to analyze the temperature difference between the upper and lower tubular furnaces and different positions on the autoclave to determine the joint stability weight. The flowchart of the method for obtaining the joint stability weight at each moment within the nearest neighbor monitoring period provided in this application embodiment is as follows: Figure 13 As shown.

[0091] First, by analyzing the temperature differences between the upper tube furnace temperature and the top temperature of the reactor body, and between the lower tube furnace temperature and the bottom temperature of the reactor body at different time periods, the top heat energy fluctuation and bottom heat energy fluctuation are determined to reflect the unstable characteristics in the process of the upper tube furnace providing heat energy to the top of the high-pressure reactor body or the lower tube furnace providing heat energy to the bottom of the high-pressure reactor body. Specifically:

[0092] The multiple times preceding each time point are recorded as the nearest neighbor monitoring period for each time point;

[0093] In this embodiment, the 30 moments preceding each moment are recorded as the nearest neighbor monitoring period for each moment; in other implementation methods, the implementer can set it according to the actual situation.

[0094] The difference between the temperature of the upper tube furnace and the temperature at the top of the vessel body at each moment during the nearby monitoring period is denoted as the top temperature difference.

[0095] In this embodiment, the absolute value of the difference between the temperature of the upper tube furnace and the temperature at the top of the vessel body at each moment during the nearest neighbor monitoring period is denoted as the top temperature difference.

[0096] The average of the differences in the top temperature difference between each time point within the neighboring monitoring period and all other times is taken as the top thermal energy fluctuation degree at each time point within the neighboring monitoring period.

[0097] It should be noted that, since the top of the upper tube furnace is adjacent to the top of the high-pressure reactor, the temperature difference at the top reflects the temperature difference between the upper tube furnace and the top of the reactor. The larger the temperature difference at the top, the more unstable the process of the upper tube furnace providing heat energy to the top of the reactor. The fluctuation of the heat energy at the top reflects the instability of the process of the upper tube furnace providing heat energy to the top of the high-pressure reactor. The larger the fluctuation of the heat energy at the top, the more significant the temperature difference fluctuation is in the process of the upper tube furnace providing heat energy to the top of the high-pressure reactor, and the more it reflects the instability of the heat energy supply process at the top of the reactor.

[0098] The difference between the temperature of the lower tube furnace and the temperature at the bottom of the vessel body at each moment during the nearby monitoring period is denoted as the bottom temperature difference.

[0099] In this embodiment, the absolute value of the difference between the temperature of the lower tube furnace and the temperature at the bottom of the vessel body at each moment during the nearest neighbor monitoring period is recorded as the bottom temperature difference.

[0100] The average value of the difference between the bottom temperature at each time point within the neighboring monitoring period and all other times is taken as the bottom thermal energy fluctuation at each time point within the neighboring monitoring period.

[0101] It should be noted that, since the bottom of the lower tube furnace is adjacent to the bottom of the high-pressure reactor for hydrocarbon generation, the bottom thermal energy fluctuation reflects the unstable characteristics in the process of supplying heat energy from the lower tube furnace to the bottom of the high-pressure reactor for hydrocarbon generation. The greater the bottom thermal energy fluctuation, the more significant the temperature difference fluctuation characteristics are in the process of supplying heat energy from the lower tube furnace to the bottom of the high-pressure reactor for hydrocarbon generation, and the more it can reflect the unstable characteristics in the process of supplying heat energy to the bottom of the reactor.

[0102] Furthermore, the process of the upper and lower tube furnaces supplying heat energy to the high-pressure reactor for hydrocarbon generation is easily affected by external factors. If the difference between the heat energy fluctuation values ​​at the top and bottom of the high-pressure reactor at a certain moment is greater, and the temperature difference between the top and bottom of the high-pressure reactor is less similar, it indicates that the combined effect of the upper and lower tube furnaces supplying heat energy to the high-pressure reactor for hydrocarbon generation is less stable. In this case, the temperature difference between the upper and lower tube furnaces and the top and bottom of the high-pressure reactor for hydrocarbon generation is less consistent, which makes it easier for a large temperature difference to occur from top to bottom in the sample chamber of the high-pressure reactor unit.

[0103] Therefore, based on the top thermal energy fluctuation and the bottom thermal energy fluctuation, a joint stability weight is determined to reflect the stability of the combined effect of the upper and lower tubular furnaces supplying thermal energy to the high-pressure reactor for hydrocarbon generation, specifically:

[0104] The difference between the top thermal energy fluctuation and the bottom thermal energy fluctuation at each moment within the neighbor monitoring period is recorded as the thermal energy supply difference at each moment.

[0105] In this embodiment, the absolute value of the difference between the top thermal energy fluctuation and the bottom thermal energy fluctuation at each moment within the neighbor monitoring period is recorded as the thermal energy supply difference at each moment.

[0106] The calculation result of an exponential function with the natural constant as the base and the negative number of the difference in heat supply as the exponent is used as the joint stability weight of each moment within the nearest neighbor monitoring period.

[0107] In this embodiment, the method for calculating the joint stability weight of each time point within the nearest neighbor monitoring period at each time point is as follows: Fu t,k =exp(-|RS t,k -RX t,k |), in the formula, Fu t,k Let RS be the joint stability weight at time k within the nearest neighbor monitoring period at time t. t,k Let RX be the top thermal energy fluctuation at time k within the nearest neighbor monitoring period at time t. t,k Let be the bottom thermal energy fluctuation at time k within the neighbor monitoring period at time t, and exp() be an exponential function with the natural constant as the base.

[0108] It should be noted that the smaller the combined stability weight, the greater the difference in thermal energy fluctuation between the top and bottom of the hydrocarbon generation autoclave at the corresponding time. This reflects that the combined effect of the upper and lower tube furnaces supplying thermal energy to the hydrocarbon generation autoclave is less stable and less conducive to maintaining a good temperature difference consistency between the upper and lower tube furnaces and the top and bottom positions of the hydrocarbon generation autoclave.

[0109] Thus, the joint stability weights of each time point within the neighbor monitoring period are obtained.

[0110] Step 3: By combining the temperature difference between the upper tube furnace and the top of the vessel, and the temperature difference between the lower tube furnace and the bottom of the vessel, within all times during the nearest neighbor monitoring period, the temperature difference consistency coefficient at each time is determined; the difference in the temperature difference consistency coefficient between the current time and different times during the nearest neighbor monitoring period is analyzed, and the temperature control effectiveness at the current time is calculated.

[0111] Furthermore, based on the aforementioned joint stability weights and the analysis of the temperature difference between the top and bottom, a temperature difference consistency coefficient is determined to reflect the consistency of the heating effect of the upper and lower tube furnaces on the high-pressure reactor body for hydrocarbon generation, thereby illustrating the uniformity of heating of the entire high-pressure reactor body during the heating process. Specifically:

[0112] The difference between the top temperature difference and the bottom temperature difference at each time point within the nearby monitoring period is recorded as the relative temperature difference.

[0113] In this embodiment, the absolute value of the difference between the top temperature difference and the bottom temperature difference at each moment within the nearby monitoring period is recorded as the relative temperature difference.

[0114] Calculate the ratio of the joint stability weight to the relative temperature difference, and use the sum of the ratios of all times within the nearest neighbor monitoring period at each time as the temperature difference consistency coefficient at each time.

[0115] In this embodiment, the formula for calculating the temperature difference uniformity coefficient at each moment is: Among them, Gr t Fu is the temperature difference uniformity coefficient at time t. t,k Let DS be the joint stability weight at time k within the nearest neighbor monitoring period at time t. t,k Let DX be the top temperature difference at time k within the nearest neighbor monitoring period at time t. t,k Let N be the bottom temperature difference at time k within the nearest neighbor monitoring period at time t. t Let ε be the number of all times within the nearest neighbor monitoring period at time t. ε is a preset value greater than 0 to avoid a denominator of 0. The range of ε is (0,1]. In this embodiment, ε is 0.01. As for other implementation methods, the implementer can set it according to the actual situation. Secondly, |Dr t,k -Dz t,k | represents the relative temperature difference.

[0116] It should be noted that the smaller the relative temperature difference, the smaller the difference between the top and bottom temperature differences, indicating that the temperature differences between the top and bottom of the high-pressure reactor and the tubular furnace are more similar. At the same time, the larger the joint stability weight, the better it is to maintain a good temperature difference consistency between the upper and lower tubular furnaces and the top and bottom of the high-pressure reactor. By weighting and summing the temperature difference similarity characteristics between the top and bottom of the high-pressure reactor and the tubular furnace using the joint stability weight, the temperature difference consistency characteristics between the upper and lower tubular furnaces and the top and bottom of the high-pressure reactor are measured, improving the accuracy of the temperature difference consistency characteristic measurement. Therefore, the larger the obtained temperature difference consistency coefficient, the more consistent the heating effect of the upper and lower tubular furnaces on the high-pressure reactor, and the more uniform the heating of the entire high-pressure reactor during the heating process.

[0117] Furthermore, in the simulation of shale thermal compression hydrocarbon generation and expulsion, if the temperature difference uniformity coefficient changes more significantly at different times and the temperature difference uniformity coefficient is smaller, the temperature control effect of the upper and lower tube furnaces on the high-pressure reactor body for hydrocarbon generation will be worse. At this time, it is impossible to ensure that the entire high-pressure reactor body can be heated evenly during the heating process, which can easily lead to a large temperature difference from top to bottom in the sample chamber of the high-pressure reactor unit for hydrocarbon generation. Therefore, it is necessary to intelligently control the temperature inside the upper and lower tube furnaces.

[0118] Based on the above analysis, by analyzing the differences in the temperature difference consistency coefficients at the current time and other nearby monitoring periods, the temperature control effect of the upper and lower tubular furnaces on the high-pressure reactor for hydrocarbon generation is analyzed, and the temperature control effectiveness is determined, specifically as follows:

[0119] The method for calculating the temperature control effectiveness at the current moment is as follows: Among them, Vr q Let Gr be the temperature control effectiveness at the current time q. q Gr is the temperature difference uniformity coefficient at the current time q. q,m N is the temperature difference consistency coefficient at time m within the nearest neighbor monitoring period at the current time q. q ∈ represents the number of all times within the nearest neighbor monitoring period at the current time q. ∈ is a preset value greater than 0 to avoid a denominator of 0. The value range of ∈ is (0,1]. In this embodiment, ∈ is 0.01. As for other implementation methods, the implementer can set it according to the actual situation.

[0120] It should be noted that the greater the difference between the temperature difference consistency coefficients at the current moment and those at other moments within the monitoring period, and the smaller the temperature difference consistency coefficient at the current moment, the smaller the temperature control effectiveness. This indicates that the temperature control effect of the upper and lower tubular furnaces on the high-pressure reactor body for hydrocarbon generation is worse at this time. It cannot be ensured that the entire high-temperature reactor body can be heated evenly during the heating process. At this time, the adjustment of the temperature control should be increased to ensure that the entire high-temperature reactor body can be heated evenly during the heating process.

[0121] Thus, the temperature control effectiveness at the current moment is obtained.

[0122] Step 4: Based on the differences between the average temperatures of the top and bottom of the vessel at the current moment and the temperatures of the upper and lower tube furnaces, respectively, and in conjunction with the temperature control effectiveness, the target control temperatures corresponding to the upper and lower tube furnaces at the current moment are obtained. The computer control unit 600 controls the temperatures of the upper and lower tube furnaces in the tube furnace heating unit 200 based on the target control temperatures corresponding to the upper and lower tube furnaces.

[0123] Furthermore, the temperature control effectiveness reflects the temperature control effect of the upper and lower tubular furnaces on the high-pressure reactor for hydrocarbon generation. The smaller the temperature control effectiveness of the tubular furnace on the high-pressure reactor for hydrocarbon generation at the current moment, the more intelligent control should be strengthened on the temperature inside the tubular furnace. The temperature inside the tubular furnace should be intelligently adjusted in the direction of the temperature inside the high-pressure reactor for hydrocarbon generation, so that the temperature in the sample chamber of the high-pressure reactor unit remains uniform from top to bottom, thereby improving the intelligent control effect of the heating of the high-pressure reactor device.

[0124] Therefore, based on the temperature control effectiveness, and the current temperatures of the upper tube furnace, the top of the vessel, and the bottom of the vessel, the target control temperature for the upper tube furnace at the current moment is determined, and correspondingly, the target control temperature for the lower tube furnace at the current moment is determined, specifically as follows:

[0125] The formula for calculating the target control temperature of the upper tube furnace at the current moment is: As q =Es q +exp(-Vr q )×(Gu q -Es q ), where As q Es represents the target controlled temperature of the upper tube furnace at the current moment q. q Let q be the temperature of the upper tube furnace at the current moment, and Vr be the temperature of the upper tube furnace. q Let Gu be the temperature control effectiveness at the current time q. q exp() is the average temperature of the top and bottom of the vessel at the current time q, and is an exponential function with the natural constant as the base.

[0126] The formula for calculating the target control temperature of the lower tube furnace at the current moment is: Ax q =Ex q +exp(-Vr q )×(Gu q -Ex q ), where Ax q Let Ex be the target controlled temperature of the tubular furnace at the current moment q. q Let Vr be the temperature of the lower tube furnace at the current time q. q Let Gu be the temperature control effectiveness at the current time q. q exp() is the average temperature of the top and bottom of the vessel at the current time q, and is an exponential function with the natural constant as the base.

[0127] It should be noted that the greater the temperature difference between the upper or lower tubular furnace and the hydrocarbon-generating autoclave body at any given moment, the more important it is to control the temperature in the upper or lower tubular furnace. This is to prevent a large temperature difference from rising from top to bottom within the sample chamber of the hydrocarbon-generating autoclave unit. Furthermore, a lower temperature control effectiveness indicates poorer temperature control within the tubular furnace, making it more prone to large temperature differences. In such cases, the temperature control adjustment should be increased to ensure uniform temperature distribution within the sample chamber of the hydrocarbon-generating autoclave unit, thereby improving the intelligent control effect of the autoclave heating system.

[0128] Furthermore, based on the target control temperature corresponding to the upper tube furnace and the target control temperature corresponding to the lower tube furnace at the current moment, the temperature of the upper tube furnace and the lower tube furnace in the tube furnace heating unit is controlled by the computer control unit, specifically as follows:

[0129] The current temperature of the upper and lower tubular furnaces, along with their corresponding target temperatures, is input into the computer control unit 600 to obtain the temperature control signal for the tubular furnaces. The tubular furnace heating unit 200 then controls the temperatures of the upper and lower tubular furnaces based on this signal. This ensures that the current temperatures of the upper and lower tubular furnaces continuously approach their corresponding target temperatures, guaranteeing stable operation of the heating unit, improving the heating effect during shale thermal compression hydrocarbon generation and expulsion simulation, and preventing large temperature differences from top to bottom in the sample chamber of the hydrocarbon generation autoclave unit.

[0130] The operation process of the shale thermal compression hydrocarbon generation and expulsion simulation system varies depending on the type of the high-pressure vessel 101; there are two specific operation procedures:

[0131] When the high-pressure vessel body 101 is high-pressure vessel body 101a, the specific process is as follows:

[0132] (1) The sample is placed into the lower part 1152 of the sample boat, and the upper part 1151 and the lower part 1152 of the sample boat are combined to form a complete sample boat 115. Water can be added to the sample boat 115 or not.

[0133] (2) The tubular heating furnace unit 200 is fixed on the support frame moving platform 400. The high-pressure vessel body 101a is built into the high-pressure vessel limiting groove 203. The high-pressure vessel limiting fixer 404 is connected to the high-pressure vessel body 101a, locking the high-pressure vessel body 101a in place. The upper tubular furnace 201 and the lower tubular furnace 202 are fastened together, and then the upper and lower tubular furnaces are fixed with the locking buckle 205. The through hole 111 of the high-pressure vessel body 101a is connected to the pressure monitoring and product collection metering unit 500. Figure 9 Connect as shown.

[0134] (3) Insert the filter 110, sample boat 115, filling block 108, plug 104, graphite pad 107 and sealing pressure pad 102 into the high pressure vessel body 101a in sequence. After passing the pressure cap 103 through the plug 104, connect it to the high pressure vessel body 101a by thread. Then, lock the cap 106 and connect it to the plug 104 by thread.

[0135] (4) After fixing the position of the autoclave body 101a, adjust the position of the movable support frame 303 so that the connector 301 and the plug 104 are roughly on the same line. Use the connecting rod 306 to connect the connector 301 and the plug 104 together. Use the limit protector 305 to put the connecting rod 306, the connector 301 and the plug 104 on a straight line. Fix the position of the movable support frame 303. Control the hydraulic sealer 302 to tighten the plug by the computer control unit 600, and compact the graphite pad 107 to form a seal. Then fix the locking cap 106, remove the limit protector 305 and the connecting rod 306, move the movable support frame 303 away from its original position, and then insert the temperature sensor 105 into the plug 104.

[0136] (5) The computer control unit 600 controls the pressure monitoring and product collection metering unit 500 to close valves 2 (507) and 3 (508), and opens valve 1 (506). The gas pressurization system is controlled to inject high-pressure gas into the reactor body 101. In this embodiment, the injected gas pressure is 5 MPa. Then, valve 1 (506) is closed. If the pressure sensor 504 does not decrease after 8 hours, it indicates that the high-pressure reactor body 101a has a good sealing effect. Valve 2 (507) is opened, and the gas inside the high-pressure reactor body 101a is discharged through the vacuum system 502 and a vacuum is drawn. Then, valve 2 (507) is closed.

[0137] (6) The computer control unit 600 controls the temperature of the upper and lower tubular furnaces in the tubular furnace heating unit 200 according to the method in this embodiment, thereby controlling the heating process of the high pressure vessel 101a. The heating method is to heat the high pressure vessel 101a at a certain set temperature. When the pressure sensor 504 detects that the internal pressure of the high pressure vessel 101a is close to the pressure bearing capacity of the equipment, the pressure relief valve 505 automatically opens to release the internal pressure, and the tubular furnace heating unit 200 stops heating.

[0138] (7) After the equipment has run for the set heating time T, heating is stopped. In this embodiment, the heating time T is set to 48 hours. In other implementation methods, the implementer can set the time according to the experimental requirements. Use high-temperature insulated gloves to open the latch 205 and open the upper tube furnace 201 to the maximum angle to achieve rapid cooling. After the equipment reaches room temperature, open valve 3 (508) and use the collection and metering function of the simulated gas collection and metering system 503 to collect and accurately measure the gas, and confirm that there is no pressure left in the autoclave.

[0139] (8) Remove the temperature sensor 105, remove the locking cap 106 and the pressure cap 103 in sequence, readjust the position of the movable support frame 303 on the support frame moving platform 304 so that the hydraulic press joint 301 and the plug 104 are in a straight line, fix the position of the movable support 303, connect the joint 301 and the plug 104 together with the connecting rod 306, install the limit protector 305, and use the computer control unit 600 to control the hydraulic seal 302 to pull out the plug. Take out the sample boat 115, the filling block 108 and the filter 110 in sequence, and collect the generated oil inside and on the surface of the sample boat.

[0140] (9) Make the degreased cotton 5126 into a thin circular sheet, wrap it around the base 5125 and follow the instructions. Figure 10 Insert the cotton 5126 into the base tray 5125 along the dotted line direction, then fasten the upper pressure pad 5124 to the base tray 5125 and press it firmly against the degreased cotton 5126. Finally, tighten the locking cap 5123. Figure 10 A special tool is used to penetrate deep into the interior of the autoclave 101a to collect oil products and residues from the inner surface of the autoclave 101a.

[0141] (10) After the products and residues are completely collected, water is added to the interior of the high-pressure vessel 101a for cleaning. The tiltable platform 403 is controlled by the computer control unit 600 to pour out the water, thus completing the cleaning of the reactor.

[0142] When the high-pressure vessel body 101 is high-pressure vessel body 101b, the specific process is as follows:

[0143] (1) The sample is loaded into the sample reaction container 108b.

[0144] (2) The tubular heating furnace unit 200 is fixed on the support frame moving platform 400. The high pressure vessel body 101b is built into the high pressure vessel limiting groove 203. The high pressure vessel limiting fixer 404 is connected to the high pressure vessel body 101b and locks the high pressure vessel body 101b to be fixed. The upper tubular furnace 201 and the lower tubular furnace 202 are fastened together, and then the upper and lower tubular furnaces are fixed with the lock 205.

[0145] (3) One side of the capsule sample reaction vessel 108b is sequentially passed through the through hole 111, the fine graphite gasket 112, and the short pressure cap 110b of the autoclave body 101b. The short pressure cap 110b forms a seal on one side of the through hole 111 by compacting the fine graphite gasket 112. The other side of the capsule sample reaction vessel 108b is sequentially passed through the plug 104b, the fine graphite gasket 112, and the short pressure cap 110b. The short pressure cap 110b forms a seal on one side of the plug 104b by compacting the fine graphite gasket 112. The plug 104b is inside the autoclave body 101b. The graphite gasket 107 and the sealing pressure gasket 102 are sequentially passed through the outside of the plug 104b. The pressure cap 103 is passed through the plug 104b and then connected to the autoclave body 101a by threads. Then, the locking cap 106 is connected to the plug 104 by threads.

[0146] (4) After fixing the position of the autoclave body 101b, adjust the position of the movable support frame 303 so that the connector 301 and the plug 104 are on the same horizontal line. Use the connecting rod 306 to connect the connector 301 and the plug 104 together. Use the limit protector 305 to put the connecting rod 306, the connector 301 and the plug 104 on a straight line. Fix the position of the movable support frame 303. Control the hydraulic sealer 302 to tighten the plug by the computer control unit 600, and compact the graphite pad 107 to form a seal. Then fix the locking cap 106, remove the limit protector 305 and the connecting rod 306, and move the movable support frame 303 away from its original position. Then insert the temperature sensor 105 into the temperature test hole 113.

[0147] (5) Connect the confining pressure hole 114 to the surrounding rock pressure pump 510, connect the pipeline on the plug side of the capsule sample reaction container 108b to the fluid pressure pump 511, and connect the pipeline on the through hole 111 side of the capsule sample reaction container 108b to the gas pressurization system 501, vacuum system 502, simulated gas collection and metering system 503, pressure sensor 504, pressure relief valve 505 and hydrocarbon discharge control valve 509 through pipelines. Among them, the gas pressurization system 501, vacuum system 502 and simulated gas collection and metering system 503 are independently controlled by valves 506-1, 507-2 and 508-3 respectively.

[0148] (6) The computer control unit 600 controls the pressure monitoring and product collection metering unit 500 to close valves 2 (507) and 3 (508), open valve 1 (506), open the hydrocarbon discharge control valve 509, and control the gas pressurization system to inject high-pressure gas into the capsule sample reaction container 108b. In this embodiment, the injected gas pressure is 5 MPa. Then, close valve 1 (506). If the pressure sensor 504 does not decrease after 8 hours, it indicates that the high-pressure vessel 101b has a good sealing effect. Open valve 2 (507), discharge the gas inside the high-pressure vessel 101b through the vacuum system 502, and evacuate the vacuum. Then, close valve 2 (507) and close the hydrocarbon discharge control valve 509.

[0149] (7) The computer control unit 600 controls the temperature of the upper and lower tubular furnaces in the tubular furnace heating unit 200 according to the method in this embodiment, thereby controlling the heating process of the high pressure vessel 101b. The heating method is to heat the high pressure vessel 101b at a certain set temperature. When the pressure sensor 504 detects that the internal pressure of the high pressure vessel 101b is close to the pressure bearing capacity of the equipment, the pressure relief valve 505 automatically opens to release the internal pressure, and the tubular furnace heating unit 200 stops heating.

[0150] (8) The computer control unit 600 controls the surrounding rock pressure pump 510 to inject high pressure fluid into the sample chamber 109 to apply surrounding rock pressure to the capsule sample reaction container 108b, and controls the fluid pressure pump 511 to apply fluid pressure into the capsule sample reaction container 108b.

[0151] (9) The computer control unit 600 opens valve 3 (508) and sets the hydrocarbon discharge control valve pressure P. In this embodiment, the hydrocarbon discharge control valve pressure P is set to 50 MPa. In other embodiments, the implementer can set it according to experimental requirements. When the pressure inside the capsule sample reaction vessel 108b is greater than or equal to P, the hydrocarbon discharge control valve 509 opens; when the pressure is less than P, the hydrocarbon discharge control valve 509 closes, thereby achieving simultaneous generation and discharge of products. The gaseous products are collected and measured using the simulated gas collection and metering system 503.

[0152] (10) After the equipment has run for the set heating time T, heating is stopped. In this embodiment, the heating time T is set to 48 hours. In other implementation methods, the implementer can set it according to the experimental requirements. Use high-temperature insulated gloves to open the latch 205 and open the upper tube furnace 201 to the maximum angle to achieve rapid cooling. After the equipment reaches room temperature, open valve 3 (508) and use the collection and metering function of the simulated gas collection and metering system 503 to collect the residual gas in the autoclave and accurately measure it, and confirm that there is no pressure left in the autoclave.

[0153] (11) Remove the temperature sensor 105, and sequentially remove the short pressure cap 110b, fine graphite pad 112, locking cap 106, and pressure cap 103. Readjust the position of the movable support frame 303 on the support frame moving platform 304 so that the hydraulic press joint 301 and the plug 104 are in a straight line. Fix the position of the movable support frame 303, connect the joint 301 and the plug 104 together with the connecting rod 306, install the limit protector 305, and use the computer control unit 600 to control the pulling force of the hydraulic seal 302 to remove the plug 104b, sealing pressure pad 102, and graphite pad. Disassemble the short pressure cap 110b and fine graphite pad 112 on one side of the through hole 111, separate the pipeline from the hydrocarbon discharge control valve 509, extract the capsule sample reaction container 108b, disassemble the container to collect the generated oil products.

[0154] (12) If the capsule sample reaction vessel 108b leaks during operation, causing internal contamination of the autoclave 101b, make the degreased cotton 5126 into a circular thin sheet, wrap it around the base 5125, and follow the instructions. Figure 10 Insert the cotton 5126 into the base tray 5125 along the dotted line direction, then fasten the upper pressure pad 5124 to the base tray 5125 and press it firmly against the degreased cotton 5126. Finally, tighten the locking cap 5123. Figure 10 Specialized tools were used to clean the interior of the autoclave 101b.

[0155] (13) After the products and residues are completely collected, water is added to the interior of the high-pressure vessel 101b for cleaning. The tiltable platform 403 is controlled by the computer control unit 600 to pour out the water, thus completing the cleaning of the reactor.

[0156] It should be understood that, although Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0157] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0158] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application, without departing from the content of the technical solution of this application, shall fall within the protection scope of the technical solution of this application.

Claims

1. A shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers, characterized in that, It includes a high-pressure reactor unit (100), a tubular furnace heating unit (200), a hydraulic sealing unit (300), a liftable integrated platform unit (400), a pressure monitoring and product collection and metering unit (500), and a computer control unit (600), wherein: The hydrocarbon generation autoclave unit (100) is placed horizontally and passes through the tubular furnace heating unit (200). The two are tightly fitted but not integrated. The tubular furnace heating unit (200), the hydraulic sealing unit (300), and the pressure monitoring and product collection and metering unit (500) are all fixedly mounted on the liftable integrated platform unit (400). The computer control unit (600) is connected to the hydrocarbon generation autoclave unit (100), the tubular furnace heating unit (200), the hydraulic sealing unit (300), the liftable integrated platform unit (400), and the pressure monitoring and product collection and metering unit (500), respectively. The hydrocarbon generation autoclave unit (100) includes an autoclave body (101), a sealing gasket (102), a pressure cap (103), a plug (104), a temperature sensor (105), a locking cap (106), a graphite pad (107), a filling block (108), a sample chamber (109), a filter (110), a through hole (111), a fine graphite pad (112), a temperature test hole (113), a confining pressure hole (114), and a sample boat (115). There are two types of high-pressure reactor bodies (101): a high-pressure reactor body with a first connection method (101a) and a high-pressure reactor body with a second connection method (101b), wherein: In the first type of connection, the autoclave body (101a) has a sample chamber (109) in the middle, which is filled with a sample boat (115). The autoclave body (101) has a through hole (111) on one side and is connected to a sealing assembly consisting of a plug (104a) with a non-through hole, a graphite gasket (107), a sealing pressure gasket (102), a pressure cap (103), and a locking cap (106) on the other side. The sample chamber (109) has a filter (110) on one side of the through hole and a filling block (108) on one side of the sealing assembly. The plug (104a) has a non-through hole. The interior has a non-through hole through which the temperature sensor (105) penetrates the autoclave to measure the temperature. The graphite pad (107) and the sealing pad (102) pass through the narrow diameter portion of the plug (104a) with the non-through hole and are then locked at the wide diameter position. The pressure cap (103) and the autoclave body (101) are tightly connected by threads, and the locking cap (106) is also connected to the plug (104a) with the non-through hole by threads. The sample chamber (109) inside the autoclave body (101a) with the first connection method can be directly used as a sample reaction vessel, or a sample boat can be added inside. The high-pressure vessel body (101b) of the second connection method differs from the high-pressure vessel body (101a) of the first connection method in four ways: First, it has a plug (104b) with a through hole; second, the sample chamber (109) is filled with a capsule sample reaction container (108b) instead of a sample boat (115), and there is a filler line at each end of the capsule sample reaction container, and the two lines pass through the through hole (111) and the plug (104b) with a through hole respectively; third, in addition to the through hole (111), there is also a temperature test hole (113) and a confining pressure hole (114) on one side of the through hole; fourth, a fine graphite pad (112) and a short pressure cap (110b) pass through the outside of the through hole (111) and the plug (104b) with a through hole in sequence, and the short pressure cap (110b) compacts the fine graphite pad (112) to form a seal between the extension line of the capsule sample reaction container and the high-pressure vessel body; The tubular furnace heating unit (200) includes an upper tubular furnace (201), a lower tubular furnace (202), a high-pressure autoclave limiting groove (203), a temperature sensor group (204), and a latch (205), wherein: The upper tube furnace (201) and the lower tube furnace (202) contain a high-pressure vessel limiting groove (203). The upper tube furnace (201) can be opened and closed by adjusting the angle. The upper and lower tube furnaces have a lock (205) on the outside to lock the upper and lower tube furnaces. Both the upper and lower tube furnaces contain a temperature sensor group (204). The tubular furnace is used to control the temperature of the high-pressure reactor for generating hydrocarbons.

2. The shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The sample boat (115) is made of zircon and consists of an upper part (1151), a lower part (1152), and a pressure relief port (1153). The protruding part of the upper part (1151) and the groove of the lower part are integrated. The sample boat (115) is filled with samples and placed inside the sample chamber (109). The lower part (1152) of the sample boat has a pressure relief port (1153) on one side. This pressure relief port (1153) is used to prevent the samples inside the sample boat from breaking and to facilitate the removal of the sample boat from the high-pressure reactor after the experiment.

3. The shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The filter (110) has the function of allowing only fluid products to pass through while preventing solid products from passing through.

4. The shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The hydraulic sealing unit (300) includes a coupling (301), a hydraulic sealer (302), a movable support frame (303), a support frame moving platform (304), a limiter (305), and a connecting rod (306), wherein: The hydraulic seal (302) has a butt joint (301) on one side. The hydraulic seal is fixed on a movable support frame (303). The movable support frame (303) can be freely adjusted on the support frame moving platform (304). One side of the connecting rod (306) is connected to the butt joint (301), and the other side is connected to the plug (104). The limiter (305) is a movable part. When the movable support frame (303) is adjusted to an accurate position, it plays the role of controlling the butt joint (301) to maintain a fixed position. The hydraulic sealing unit is used to automatically control the sealing and disassembly of the hydrocarbon generation autoclave.

5. A shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The liftable integrated platform unit (400) includes an experimental table (401), a tilting cylinder (402), a tiltable platform (403), a high-pressure autoclave limit and fixation device (404), and a tubular furnace support base (405), wherein: The platform on the experimental bench (401) is a tiltable platform (403). The tiltable platform (403) is provided with lifting power by tilting cylinder (402). The tiltable platform (403) has a high pressure vessel limiter (404) for fixing the tubular furnace heating unit (200) and the hydrocarbon generation high pressure vessel unit (100) and a tubular furnace support base (405). The tiltable platform is used to control the angle of the high-pressure reactor for generating hydrocarbons.

6. The shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The pressure monitoring and product collection and metering unit (500) includes a gas pressurization system (501), a vacuum system (502), a simulated gas collection and metering system (503), a pressure sensor (504), a pressure relief valve (505), valve 1 (506), valve 2 (507), valve 3 (508), a hydrocarbon discharge control valve (509), a surrounding rock pressure pump (510), a fluid pressure pump (511), and a cleaning tool (512).

7. A shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 6, characterized in that, The pressure monitoring and product collection metering unit (500) has two connection methods: When the high-pressure vessel body (101) is the high-pressure vessel body (101a) of the first connection method, the gas pressurization system (501), vacuum system (502), simulated gas collection and metering system (503), pressure sensor (504), and pressure relief valve (505) are all connected to the through hole (111) of the hydrocarbon generation high-pressure vessel unit (100) through pipelines. Among them, the gas pressurization system (501), vacuum system (502), and simulated gas collection and metering system (503) each have independently controlled valve 1 (506), valve 2 (507), and valve 3 (508). When the high-pressure vessel body is the high-pressure vessel body of the second connection method (101b), the connection method is different from that of the high-pressure vessel body of the first connection method (101a). The gas pressurization system (501), vacuum system (502), simulated gas collection and metering system (503), and pressure sensor (504) are all connected to the sample reaction container pipeline extending from the through hole (111) of the hydrocarbon generation high-pressure vessel unit (100) through pipelines. There is a hydrocarbon discharge control valve (509) between the sample reaction container pipeline and the gas pressurization system (501), vacuum system (502), simulated gas collection and metering system (503), pressure sensor (504), and pressure relief valve (505).

8. A shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 6, characterized in that, The cleaning tool (512) consists of a handle (5121), a connecting rod (5122), a locking cap (5123), an upper pressure pad (5124), a base (5125), and degreased cotton (5126). The handle (5121) is connected to the connecting rod (5122). The locking cap (5123) and the upper pressure pad (5124) pass through the connecting rod (5122) in sequence. The bottom of the connecting rod (5122) has threads, which are connected to the threads in the groove of the base (5125). The degreased cotton (5126) is unfolded into a thin sheet and rolled upward from the bottom of the base (5125) into the groove of the base (5125). After being compacted by the upper pressure pad (5124), it is locked in place by the locking cap (5123). The locking cap (5123) and the connecting rod (5122) are connected by threads.

9. A shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The computer control unit (600) can automatically control the tubular furnace heating unit (200), the hydraulic sealing unit (300), the liftable integrated platform unit (400), and the pressure monitoring and product collection and metering unit (500), and record and display the temperature and pressure data of the samples in the hydrocarbon generation autoclave unit (100).

10. A method for simulating shale thermal compression hydrocarbon generation and expulsion based on multiple types of containers, said simulation method being implemented based on the shale thermal compression hydrocarbon generation and expulsion simulation system based on multiple types of containers as described in claim 1, characterized in that, The implementation steps of the simulation method include: The temperature of the top and bottom of the high-pressure vessel (101) at each moment is acquired in real time, as well as the temperature of the upper tube furnace (201) and the lower tube furnace (202) at each moment; multiple moments before each moment are recorded as the nearest neighbor monitoring period of each moment. The temperature differences and fluctuations between the upper tube furnace and the top of the vessel, and between the lower tube furnace and the bottom of the vessel, at each moment during the nearest neighbor monitoring period are analyzed to obtain the joint stability weights at each moment during the nearest neighbor monitoring period. By taking into account the temperature difference between the upper tube furnace and the top of the vessel, and the temperature difference between the lower tube furnace and the bottom of the vessel, within all times during the nearest neighbor monitoring period at each time moment, and combining the joint stability weight, the temperature difference consistency coefficient at each time moment is determined; the difference in the temperature difference consistency coefficient between the current time moment and different times during the nearest neighbor monitoring period is analyzed, and the temperature control effectiveness at the current time moment is calculated. Based on the average temperature of the top and bottom of the vessel at the current moment, and the differences between these temperatures and the temperatures of the upper and lower tube furnaces, respectively, and in conjunction with the temperature control effectiveness, the target control temperature corresponding to the upper tube furnace and the target control temperature corresponding to the lower tube furnace at the current moment are obtained respectively. The computer control unit (600) controls the temperature of the upper and lower tube furnaces in the tube furnace heating unit (200) based on the target control temperature corresponding to the upper and lower tube furnaces.

11. The shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers as described in claim 10, characterized in that, The method of obtaining the joint stability weights at each time point within the nearest neighbor monitoring period includes: The difference between the temperature of the upper tube furnace and the temperature at the top of the vessel body at each moment during the neighboring monitoring period is recorded as the top temperature difference; the average of the differences between the top temperature differences at each moment during the neighboring monitoring period and all other moments is taken as the top thermal energy fluctuation at each moment during the neighboring monitoring period. The difference between the temperature of the lower tube furnace and the temperature at the bottom of the vessel body at each moment during the nearby monitoring period is recorded as the bottom temperature difference; the average of the differences between the bottom temperature differences at each moment during the nearby monitoring period and all other moments is taken as the bottom thermal energy fluctuation at each moment during the nearby monitoring period. The difference between the top thermal energy fluctuation and the bottom thermal energy fluctuation is denoted as the thermal energy supply difference; the calculation result of an exponential function with the natural constant as the base and the negative number of the thermal energy supply difference as the exponent is used as the joint stability weight of each moment within the nearest neighbor monitoring period.

12. The shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers as described in claim 11, characterized in that, Determining the temperature difference consistency coefficient at each moment includes: The difference between the top temperature difference and the bottom temperature difference at each time point within the nearby monitoring period is recorded as the relative temperature difference. Calculate the ratio of the joint stability weight to the relative temperature difference, and use the sum of the ratios of all times within the nearest neighbor monitoring period at each time as the temperature difference consistency coefficient at each time.

13. The shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers as described in claim 10, characterized in that, Current moment Temperature control effectiveness The calculation method is as follows: ,in, For the current moment Temperature difference uniformity coefficient, For the current moment The first neighbor monitoring period during which the Temperature uniformity coefficient at any given time For the current moment The number of all times within the aforementioned nearest neighbor monitoring period. The default value is greater than 0.

14. The shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers as described in claim 13, characterized in that, Obtaining the target control temperature corresponding to the upper tube furnace at the current moment and the target control temperature corresponding to the lower tube furnace at the current moment includes: Current moment Target control temperature for top tube furnace The calculation formula is: ,in, For the current moment The temperature of the upper tube furnace, For the current moment Temperature control effectiveness For the current moment The average temperature of the top and bottom of the vessel. An exponential function with the natural constant as its base; Current moment Target control temperature for bottom tube furnace The calculation formula is: ,in, For the current moment The temperature of the lower tube furnace.

15. The shale thermal compression hydrocarbon generation and expulsion simulation method based on multiple types of containers as described in claim 10, characterized in that, The temperature control of the upper and lower tube furnaces in the tube furnace heating unit (200) includes: The current temperature of the upper tube furnace and its corresponding target temperature, as well as the temperature of the lower tube furnace and its corresponding target temperature, are input into the computer control unit to obtain the temperature control signal for the tube furnace. The tube furnace heating unit then controls the temperature of the upper and lower tube furnaces based on the temperature control signal.

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