Hydrocarbon generation and gas production simulator and hydrocarbon generation and gas production simulation experimental device

Abstract

The present application discloses a hydrocarbon generation and gas production simulator and a hydrocarbon generation and gas production simulation experimental device. The simulator includes: a shell; a simulation cavity, which is arranged in the shell, the simulation cavity is used to place the rock core, and the simulation cavity has openings at both ends; an end cover, which is detachably connected to the openings at both ends of the simulation cavity, and the end cover is provided with a fluid inlet or a fluid outlet; a fluid heating tube, which is arranged in the simulation cavity, and the fluid heating tube is constructed as a hollow structure, one end of the fluid heating tube is connected to the fluid inlet, and the other end of the fluid heating tube is connected to the rock core. The simulator of the present application can achieve rapid heating of the fluid, meet the requirements of high-temperature fluid and reservoir working conditions, and save additional external fluid heating equipment, which is not only conducive to the miniaturization of the simulator and simulation experimental device, but also helps to reduce the cost of the device.

Description

Technical Field

[0001] The present application relates to the technical field of geological experimental research, and in particular to a hydrocarbon generation and gas production simulator and a hydrocarbon generation and gas production simulation experimental device. Background Art

[0002] With the continuous decline of conventional oil resources and the increasing global demand for oil, heavy oil resources, which account for a significant proportion of oil and gas resources, are receiving increasing attention. Steam flooding (SF), steam-assisted gravity drainage (SAGD), and incineration (ISC) have proven effective post-hatch recovery methods in the field, offering the potential to further enhance reservoir recovery. However, heavy oil reserves suitable for steam flooding and SAGD are limited, and the high carbon emissions from incineration flue gases hinder their widespread application. Consequently, most post-hatch reservoirs become abandoned due to a lack of replacement technologies. These reservoirs have high remaining reserves, abundant residual heat in the formations, and the advantages of well networks and comprehensive surface production and processing equipment, creating favorable conditions for the application of in-situ crude gasification (ISG). ISG offers significant advantages, including improving the economic benefits of heavy oil recovery, further tapping the potential of remaining reserves, and efficiently reusing resources as a clean energy source. ISG holds enormous potential for development. The most effective way to learn and master the principles of engineering technology is to conduct experimental simulation research, and by simulating different experimental conditions, clarify the process mechanism and its main controlling factors.

[0003] Currently, conventional simulators, through the addition of electric ignition equipment, can only simulate the electric ignition process (RTO) and the one-dimensional displacement process (CT) during core measurement experiments. This not only complicates the experimental operation and has a long experimental cycle (7 to 10 days), but also has high operating and economic costs. Furthermore, it is not conducive to studying combustion mechanisms under different operating conditions, resulting in significant discrepancies between the simulated experimental results and the engineering implementation parameters. Furthermore, because conventional simulators use external heating, this also makes it difficult to quickly heat the injected gas, significantly reducing experimental efficiency and the accuracy of the simulated experimental results. Summary of the Invention

[0004] In view of this, the present application provides a hydrocarbon generation and gas production simulator and a hydrocarbon generation and gas production simulation experimental device, which can achieve rapid heating of the fluid and meet the requirements of high-temperature fluid and reservoir working conditions while saving additional external fluid heating equipment, which is not only conducive to the miniaturization of the simulator and simulation experimental device, but also helps to reduce the cost of the device.

[0005] According to one aspect of the present application, a simulator for in-situ hydrocarbon generation and gas production from organic matter is provided, comprising:

[0006] case;

[0007] A simulation cavity is provided in the shell, the simulation cavity is used to place the rock core, and has openings at both ends of the simulation cavity;

[0008] End caps, detachably connected to the openings at both ends of the simulation cavity, with a fluid inlet or a fluid outlet provided on the end caps;

[0009] The fluid heating tube is arranged in the simulation cavity. The fluid heating tube is constructed as a hollow structure. One end of the fluid heating tube is connected to the fluid inlet, and the other end of the fluid heating tube is connected to the rock core.

[0010] Optionally, a plurality of through holes are provided on the simulation cavity, and the organic matter in-situ hydrocarbon generation and gas production simulator further comprises:

[0011] a receiving tube, passing through the through hole;

[0012] The sensor assembly, at least part of which is arranged in the containing tube, is used to obtain environmental parameters in the simulation cavity.

[0013] Optionally, the diameter of the through hole is 2.5 mm to 3.5 mm; the outer diameter of the accommodating tube is 2.5 mm to 3.5 mm, and the wall thickness of the accommodating tube is 0.5 mm to 0.8 mm.

[0014] Optionally, the in-situ hydrocarbon and gas generation simulator of organic matter further includes:

[0015] The thermal insulation layer is coated on the outside of the simulation cavity and is constructed as a detachable structure.

[0016] Optionally, the in-situ hydrocarbon and gas generation simulator of organic matter further includes:

[0017] A heating element is provided in the shell and is used to heat the simulation cavity;

[0018] The fluid transmission tube is arranged in the simulation cavity, one end of the fluid transmission tube is connected to the fluid inlet, and the other end of the fluid transmission tube is connected to the rock core.

[0019] Optionally, the simulation cavity is constructed as a cylindrical hollow structure, the inner diameter of the simulation cavity is 2cm to 3.8cm, the length of the simulation cavity is 25cm to 40cm, and the wall thickness of the simulation cavity is

[0020] 1.5mm~2mm.

[0021] Optionally, the in-situ hydrocarbon and gas generation simulator of organic matter further includes:

[0022] The sealing member is arranged in the shell and connected to the end cover, and is used for sealing the end cover and the simulation cavity.

[0023] Optionally, the in-situ hydrocarbon and gas generation simulator of organic matter further includes:

[0024] The flow limiting member is provided at the fluid outlet and is used to adjust the flow rate of the fluid flowing through the fluid outlet.

[0025] According to another aspect of the present application, a simulation experimental device for in-situ hydrocarbon generation and gas production from organic matter is provided, comprising:

[0026] Fluid injection systems;

[0027] The organic matter in-situ hydrocarbon generation and gas production simulator proposed in the above embodiment has a fluid inlet connected to a fluid injection system;

[0028] The fluid analysis system is connected to the fluid outlet of the organic matter in-situ hydrocarbon generation and gas production simulator.

[0029] The control system is electrically connected to the fluid injection system, the organic matter in-situ hydrocarbon generation and gas production simulator and the fluid analysis system.

[0030] Optionally, the fluid analysis system comprises:

[0031] A pretreatment component is connected to the fluid outlet of the organic in-situ hydrocarbon generation and gas production simulator, and is used to pretreat the fluid flowing out of the organic in-situ hydrocarbon generation and gas production simulator. The pretreatment component includes a cooling system, a pressure reducing valve, a gas-liquid separator and a dryer connected in sequence;

[0032] The analysis component is connected to the pre-processing component. The analysis component includes a mounting seat and at least one fluid parameter detector. The at least one fluid parameter detector is used to detect fluid parameters of different types of fluids.

[0033] Optionally, the fluid injection system comprises:

[0034] A gas injection assembly connected to the fluid inlet, the gas injection assembly comprising a gas cylinder and a flow meter;

[0035] a liquid injection assembly connected to the fluid inlet, the liquid injection assembly comprising a liquid reservoir and a pumping device;

[0036] The check valve is connected between at least one of the gas injection assembly and the liquid injection assembly and the fluid inlet.

[0037] By using the above technical solution, by setting a fluid heating tube in the simulation cavity, additional external fluid heating equipment is saved. On the one hand, the simulator structure is optimized, which is conducive to the miniaturization of the simulator and the simulation experimental device, and helps to reduce the manufacturing and maintenance costs of the device. On the other hand, while achieving rapid heating of the fluid, the heat loss of the fluid during the transmission process caused by the external heating fluid is reduced, thereby being able to simulate the changes in the hydrocarbon component content affected by the change in the temperature of the hot fluid during the in-situ hydrocarbon generation and gas production of the organic-rich reservoir. This not only helps to improve the accuracy of the experimental results, but also can provide different heating methods for the combustion mechanism simulation experiment to meet the simulation requirements of different working conditions. On the other hand, due to the simplification of the structure of the experimental device, the difficulty of device operation is reduced, the manpower control cost is saved, and the simulation experiment cycle is reduced, thereby improving the efficiency of the simulation experiment.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0040] Figure 1 One of the structural schematic diagrams of the in-situ hydrocarbon generation and gas production simulator of organic matter provided in an embodiment of the present application is shown;

[0041] Figure 2 The second structural diagram of the in-situ hydrocarbon generation and gas production simulator of organic matter provided in an embodiment of the present application is shown;

[0042] Figure 3 One of the schematic block diagrams of the experimental device for simulating in-situ hydrocarbon and gas generation from organic matter provided in an embodiment of the present application is shown;

[0043] Figure 4 The second schematic block diagram of the experimental device for simulating in-situ hydrocarbon and gas generation from organic matter provided in an embodiment of the present application is shown;

[0044] Figure 5 A schematic diagram of the structure of the analysis component provided in an embodiment of the present application is shown;

[0045] Figure 6 The third schematic block diagram of the experimental device for simulating in-situ hydrocarbon and gas generation from organic matter provided in an embodiment of the present application is shown.

[0046] Reference numerals:

[0047] 10 fluid injection system, 20 organic matter in situ hydrocarbon generation and gas production simulator, 30 fluid analysis system, 40 control system, 201 shell, 202 simulation cavity, 203 end cover, 204 fluid heating tube, 205 containing tube, 206 sensor assembly, 207 insulation layer, 208 heating element, 209 fluid transmission tube, 210 sealing element, 301 pretreatment assembly, 302 analysis assembly, 403 check valve, 2031 fluid inlet, 2032 fluid outlet, 3011 cooling system, 3012 pressure reducing valve, 3013 gas-liquid separator, 3014 dryer, 3021 fluid parameter detector, 4011 gas cylinder, 4012 flow meter, 4021 liquid reservoir, 4022 pumping device. DETAILED DESCRIPTION

[0048] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0049] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limiting the present application.

[0050] It will be understood by those skilled in the art that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of this application refers to the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, or there may be intermediate elements. In addition, "connected" or "connected" as used herein may include wireless connection or wireless fusion. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0051] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0052] In this embodiment, an organic matter in-situ hydrocarbon generation and gas production simulator 20 is provided. Figure 1 and Figure 2 As shown, the simulator includes: a shell 201 , a simulation cavity 202 , an end cover 203 and a fluid heating tube 204 .

[0053] Specifically, a simulation chamber 202 is disposed within the housing 201. The rock core required for the simulation experiment can be placed within the simulation chamber 202. Simulation chamber 202 has openings at both ends. End caps 203 are detachably connected to the openings at either end of the simulation chamber 202. End caps 203 are provided with a fluid inlet 2031 and a fluid outlet 2032. A fluid heating pipe 204 is disposed within the simulation chamber 202. The fluid heating pipe 204 is a hollow structure, with one end connected to the fluid inlet 2031 and the other end connected to the rock core.

[0054] In this embodiment, the housing 201 not only secures the simulation chamber 202, end cap 203, and other structures, but also protects the components of the housing 201, enhancing the safety of the in-situ hydrocarbon generation simulation experiment. The end cap 203 is detachably and coaxially mounted on both ends of the simulation chamber 202 to open or close the simulation chamber 202. When the simulation chamber 202 is closed, a sealed space is formed within the simulation chamber 202, facilitating temperature and pressure increases. When the simulation chamber 202 is opened, the user can maintain and replace the fluid heating tube 204 or the rock core within the simulation chamber 202. The fluid heating tube 204 is disposed within the simulation chamber 202 and is connected to the fluid inlet 2031 on the end cap 203. The fluid heating tube 204 is constructed as a hollow structure. Thus, the fluid flowing into the simulator through fluid inlet 2031 can directly enter the rock core placed in the simulation cavity 202 through the hollow structure of the fluid heating tube 204. When the heating function of the fluid heating tube 204 is activated, the fluid therein can be continuously heated to achieve the working conditions of high-temperature fluid. Of course, when the heating function of the fluid heating tube 204 is not activated, the fluid heating tube 204 can also serve to transmit the fluid. After the fluid reacts with the rock core, the newly generated fluid will flow out from the fluid outlet 2032 of the end cap 203 at the other end of the simulation cavity 202, so that the newly generated fluid can be used for reaction analysis.

[0055] In the embodiment of the present application, by setting a fluid heating tube 204 in the simulation cavity 202, additional external fluid heating equipment is saved. On the one hand, the simulator structure is optimized, which is conducive to the miniaturization of the simulator and the simulation experimental device, and helps to reduce the manufacturing and maintenance costs of the device. On the other hand, while achieving rapid heating of the fluid, the heat loss of the fluid during the transmission process caused by the external heating fluid is reduced, thereby being able to simulate the changes in the hydrocarbon component content affected by the change in the temperature of the hot fluid during the in-situ hydrocarbon generation and gas production of the organic-rich reservoir. This not only helps to improve the accuracy of the experimental results, but also can provide different heating methods for the combustion mechanism simulation experiment to meet the simulation requirements of different working conditions. On the other hand, due to the simplification of the structure of the experimental device, the difficulty of device operation is reduced, the manpower control cost is saved, and the simulation experiment cycle is reduced, thereby improving the efficiency of the simulation experiment.

[0056] It is understandable that the simulation cavity 202 can be constructed in a cylindrical, conical, or other shape, and the shape of the simulation cavity 202 can be reasonably set according to actual needs. Figure 1 and Figure 2 As shown, simulation chamber 202 is constructed as a cylindrical hollow structure with an inner diameter of 2 cm to 3.8 cm, for example, 2.1 cm, 2.9 cm, or 3.5 cm. The length of simulation chamber 202 is 25 cm to 40 cm, for example, 28 cm, 30 cm, or 35 cm. This not only meets the requirements for core placement and simulation experiments, but also facilitates the miniaturization of simulation chamber 202, reducing simulator manufacturing costs. It should be noted that the length of simulation chamber 202 can be greater than 10 times its inner diameter to facilitate sufficient fluid interaction with the core, ensuring that experimental results are more consistent with actual working conditions. The wall thickness of simulation chamber 202 is 1.5 mm to 2 mm, for example, 1.6 mm or 1.8 mm. This not only ensures the strength of simulation chamber 202 but also effectively reduces losses during conduction, ensuring accurate temperature detection, facilitating user monitoring of high-temperature reactions within simulation chamber 202, and further reducing simulator costs.

[0057] In practical application scenarios, the number of fluid inlet 2031 and fluid outlet 2032 can be one or more to meet the injection requirements of different fluids under different experimental conditions. The injected fluid can be a gas, such as oxygen, air and / or nitrogen, or a liquid, such as liquid chemicals, crude oil or water. Figure 1 and Figure 2As shown, the in-situ organic hydrocarbon generation and gas production simulator 20 is equipped with three fluid inlets 2031 and three fluid outlets 2032. One of the fluid inlets 2031 is connected to a fluid heating tube 204, which heats the gas required for the experiment. The fluid heating tube 204 adopts a disc-shaped spiral structure and has a total length of 1.2m to ensure sufficient heating time for the injected gas. The fluid heating tube 204 has a power of 4kW to 6kW, which can achieve a maximum gas temperature of 700°C to 800°C. The fluid heating tube 204 adopts a feedback regulation mode to achieve the set temperature without error. The diameter between the fluid heating tube 204 and the core can be set to 3mm. The other two fluid inlets 2031 are connected to the core and can be used to inject the liquid required for the experiment.

[0058] It is worth mentioning that a limiting member may be provided inside the simulation cavity 202 to limit the rock core by the limiting member, thereby enhancing the assembly strength of the rock core.

[0059] Furthermore, if Figure 1 and Figure 2 As shown, a plurality of through holes are provided on the simulation cavity 202 . As a refinement and extension of the specific implementation of the above embodiment, the organic in-situ hydrocarbon generation and gas production simulator 20 further includes: a receiving tube 205 and a sensor assembly 206 .

[0060] Specifically, the housing tube 205 is provided through the through hole to mount the sensor assembly 206. At least a portion of the sensor assembly 206 is provided within the housing tube 205. The sensor assembly 206 includes a temperature sensor and a pressure sensor, and is used to obtain environmental parameters (temperature and pressure parameters) within the simulation cavity 202.

[0061] In this embodiment, multiple through-holes are formed on the outer surface of the simulation chamber 202, each of which is provided with a housing tube 205. A sensor assembly 206 is located within the housing tube 205 and detects the temperature and pressure parameters within the simulation chamber 202 to implement feedback control of the simulation experiment. In this embodiment of the present application, the sensor assembly 206 is housed within the housing tube 205. While ensuring the accuracy of the environmental parameters detected by the sensor assembly 206, this not only improves the assembly strength of the sensor assembly 206 but also minimizes the wear caused by contact between the sensor assembly 206 and the rock core during the simulation experiment, allowing the experimental results to more closely match the data under actual working conditions.

[0062] It should be noted that during the simulation experiment, the heating element 208 or the fluid heating tube 204 can be controlled by the control system 40 to perform heating. If the sensor assembly 206 detects that the temperature parameter has reached the target temperature required for the experiment, the heating element 208 or the fluid heating tube 204 is controlled to stop heating.

[0063] In actual application scenarios, the housing tube 205 can be a blind tube. The diameter of the through hole is the same as the outer diameter of the housing tube 205, that is, the through hole can fit tightly with the outer wall of the housing tube 205 to ensure the sealing of the simulation cavity 202. The diameter of the through hole and the outer diameter of the housing tube 205 are both 2.5mm to 3.5mm. This not only prevents the housing tube 205 from being too large and affecting the integrity of the core, but also ensures that the housing tube 205 has enough space to accommodate the sensor assembly 206. The wall thickness of the housing tube 205 is

[0064] 0.5mm~0.8mm, thereby ensuring that the accommodating tube 205 has sufficient strength to support the sensor assembly 206, and avoiding the problem that the detection accuracy of the sensor assembly 206 for environmental parameters is reduced due to the excessive wall thickness of the accommodating tube 205.

[0065] For example, Figure 1 and Figure 2 As shown, the simulation cavity 202 has 10 through-holes, with five through-holes each located at the top and bottom of the outer wall of the simulation cavity 202 in the simulator's height direction. Each through-hole has a diameter of 3 mm and is penetrated by a blind tube with a wall thickness of 0.65 mm. The probe of the sensor assembly 206 is placed in the blind tube, with the end of the probe close to the rock core.

[0066] Furthermore, if Figure 1 As shown, as a refinement and extension of the specific implementation of the above embodiment, the organic in-situ hydrocarbon generation and gas production simulator 20 further includes: an insulation layer 207 .

[0067] Specifically, the thermal insulation layer 207 is coated on the outside of the simulation cavity 202, and the thermal insulation layer 207 is constructed as a detachable structure.

[0068] In this embodiment, the thermal insulation layer 207 is detachably coated on the outer wall of the simulation cavity 202 , thereby reducing the temperature leakage of the simulation cavity 202 through the thermal insulation layer 207 and ensuring the temperature requirement of the simulation experiment.

[0069] In actual application scenarios, the insulation layer 207 can be made of aerogel insulation material or other high-temperature resistant insulation materials.

[0070] Furthermore, if Figure 2 As shown, as a refinement and extension of the specific implementation of the above embodiment, the organic in-situ hydrocarbon generation and gas production simulator 20 further includes: a heating element 208 and a fluid transmission pipe 209.

[0071] Specifically, a heating element 208 is disposed within the housing 201 and is used to externally heat the simulation chamber 202. A fluid transfer tube 209 is disposed within the simulation chamber 202. One end of the fluid transfer tube 209 is connected to the fluid inlet 2031, and the other end of the fluid transfer tube 209 is connected to the rock core. The number of fluid transfer tubes 209 can be appropriately set based on the number of fluid inlets 2031.

[0072] In this embodiment, a heater 208 is positioned adjacent to the simulation chamber 202 to heat the entire chamber 202, meeting the requirements of the average ignition temperature simulation experiment. Simultaneously, a fluid transfer tube 209, connected between the fluid inlet 2031 and the rock core, can be positioned within the simulation chamber 202. This fluid transfer tube 209 delivers a fluid that does not require heating to the rock core. Furthermore, it can deliver a fluid different from that in the fluid heating tube 204, preventing interaction between the multiple fluids prior to injection into the rock core.

[0073] In practical application scenarios, the heating element 208 may be an electromagnetic heating element or a resistive heating element, and this embodiment of the present application does not specifically limit this.

[0074] It is worth mentioning that Figure 2 As shown, when conducting an average ignition temperature simulation experiment, the heating function of the fluid heating tube 204 can be turned off, and the simulation cavity 202 together with the rock core to be tested set inside the simulation cavity 202 and the fluid injected into the simulation cavity 202 are heated to the ambient temperature of the simulated formation through the heating element 208, so that the fluid and the rock core are evenly heated in the simulation cavity 202, and the insulation layer 207 is removed to avoid the insulation layer 207 hindering heat conduction, so that the simulation cavity 202 can be heated quickly.

[0075] Furthermore, if Figure 1 and Figure 2 As shown, as a refinement and extension of the specific implementation of the above embodiment, the organic in-situ hydrocarbon generation and gas production simulator 20 further includes: a sealing element 210.

[0076] Specifically, the sealing member 210 is disposed in the housing 201 and connected to the end cover 203. The sealing member 210 is used to seal the end cover 203 and the simulation cavity 202.

[0077] In this embodiment, the end cover 203 and the simulation cavity 202 are sealed by the seal 210, thereby strengthening the sealing of the simulation cavity 202 and the end cover 203, which is conducive to maintaining the pressure in the simulation cavity 202, thereby meeting different formation pressure conditions in various simulation experiments and enhancing the reliability of the organic in-situ hydrocarbon generation and gas production simulator 20.

[0078] For example, the sealing member 210 may be a sealing gasket between the end cover 203 and the simulation cavity 202 or a sealing cap covering the end cover 203 and the opening of the simulation cavity 202 .

[0079] Furthermore, as a refinement and extension of the specific implementation of the above embodiment, the organic in-situ hydrocarbon generation and gas production simulator 20 further includes: a flow limiting component.

[0080] Specifically, the flow limiting member is provided at the fluid outlet 2032 , and the flow limiting member is used to adjust the flow rate of the fluid flowing through the fluid outlet 2032 .

[0081] In this embodiment, if the pressure of the simulation chamber 202 needs to be increased, the flow rate of the fluid at the fluid outlet 2032 can be reduced by controlling the flow restrictor. In this case, the flow rate at the fluid inlet 2031 is greater than the flow rate at the fluid outlet 2032, and a large amount of fluid accumulates in the simulation chamber 202, thereby achieving the effect of increasing the pressure. Conversely, if the pressure of the simulation chamber 202 needs to be reduced, the flow rate of the fluid at the fluid outlet 2032 can be increased by controlling the flow restrictor. Thus, the flow rate of the fluid flowing through the fluid outlet 2032 is regulated by the flow restrictor, facilitating the simulation of various experiments under different formation pressure conditions using the pressure sensor.

[0082] Furthermore, if Figure 3 As shown, an embodiment of the present application provides an organic in-situ hydrocarbon generation and gas production simulation experimental device, which includes: a fluid injection system 10, an organic in-situ hydrocarbon generation and gas production simulator 20 proposed in the above embodiment, a fluid analysis system 30 and a control system 40.

[0083] The fluid inlet 2031 of the in-situ organic hydrocarbon generation and gas production simulator 20 is connected to the fluid injection system 10. The fluid analysis system 30 is connected to the fluid outlet 2032 of the in-situ organic hydrocarbon generation and gas production simulator 20. The control system 40 is electrically connected to the fluid injection system 10, the in-situ organic hydrocarbon generation and gas production simulator 20, and the fluid analysis system 30.

[0084] In this embodiment, the temperature or pressure within the simulator can be monitored by the control system 40 to control the heating rate and the heating termination temperature, and the data analyzed in real time by the fluid analysis system 30 can be collected. Then, the injection parameters of the injection system are adjusted according to the monitoring parameters (temperature and pressure) of the simulator and the fluid analysis parameters to complete the steps of fluid injection, core testing, and fluid analysis in the simulation experiment. By coordinating multiple systems, the multifunctional function of one machine is achieved, which improves the applicability of the equipment and reduces the cost of use. Moreover, the organic matter in situ hydrocarbon generation and gas production simulation experimental device can set the formation temperature and pressure according to actual geological conditions, and more realistically simulate the geological conditions under which the fluid migrates to the rock organic matter reservoir, and then undergoes dissolution, densification, and other transformation effects on the reservoir, providing an effective experimental means for the prediction and evaluation of organic matter in situ hydrocarbon generation and gas production. At the same time, the organic matter in situ hydrocarbon generation and gas production simulation experimental device also adopts the optimized structure of the organic matter in situ hydrocarbon generation and gas production simulator 20. Therefore, the organic matter in situ hydrocarbon generation and gas production simulation experimental device has the beneficial effects of the above-mentioned simulator, which will not be repeated here.

[0085] Furthermore, if Figure 4 and Figure 5 As shown, as a refinement and extension of the specific implementation of the above embodiment, the fluid analysis system 30 includes: a pre-processing component 301 and an analysis component 302.

[0086] The pretreatment component 301 is connected to the fluid outlet 2032 of the organic in-situ hydrocarbon generation and gas production simulator 20 and is used to pretreat the fluid flowing out of the organic in-situ hydrocarbon generation and gas production simulator 20. Specifically, the pretreatment component 301 includes a cooling system 3011, a pressure reducing valve 3012, a gas-liquid separator 3013, and a dryer 3014, which are connected in sequence. The analysis component 302 is connected to the pretreatment component 301 and includes a mounting base and at least one fluid parameter detector 3021. The at least one fluid parameter detector 3021 is used to detect the fluid parameters of different types of fluids.

[0087] In this embodiment, the fluid flowing out of the bear organic matter in-situ hydrocarbon generation and gas production simulator 20 is cooled, decompressed, gas-liquid separated, and dried by the pretreatment component 301, so that the subsequent analysis component 302 can accurately analyze the component change characteristics and change rules of the experimental output fluid, guide the adjustment of the injection system parameters and the analysis of the experimental results. At the same time, the analysis component 302 composed of at least one fluid parameter detector 3021 (such as a component detection probe) is used to detect the concentration, content, proportion and other fluid parameters of different types of fluids, and send the fluid parameters to the control system 40 for display. Compared with the conventional method of detecting fluid parameters through a gas chromatograph, each fluid parameter detector 3021 can perform targeted detection of the fluid parameters of a certain fluid, so as to accurately control the fluid parameters to be detected, and the fluid parameter detector 3021 is smaller than the gas chromatograph, which helps to miniaturize the simulation experimental device.

[0088] In actual application scenarios, the organic matter in-situ hydrocarbon generation and gas production simulation experimental device provided in the embodiment of the present application requires an area of less than 10 square meters, which is much smaller than the 20 to 80 square meters occupied by traditional experimental devices.

[0089] Specifically, if Figure 5 As shown, analysis assembly 302 includes a mounting base and seven fluid parameter detectors 3021. The mounting base and seven fluid parameter detectors 3021 are located in a sealed space with an inlet and an outlet. The seven fluid parameter detectors 3021 are respectively used to detect the components of combustible gas, O2, N2, CO2, H2S, CO, and H2. The detection interval of fluid parameter detectors 3021 is less than 3 minutes. The seven fluid parameter detectors 3021 are fluid sensors for combustible gas, O2, N2, CO2, H2S, CO, and H2, respectively. The fluid sensors can detect fluid parameters such as the concentration, content, and proportion of the corresponding gases.

[0090] Furthermore, if Figure 6 As shown, as a refinement and extension of the above embodiment, the fluid injection system 10 includes: a gas injection component, a liquid injection component and a check valve 403.

[0091] The gas injection assembly is connected to the fluid inlet 2031 and includes a gas cylinder 4011 and a flow meter 4012. The liquid injection assembly is also connected to the fluid inlet 2031 and includes a liquid reservoir 4021 and a pumping device 4022. A check valve 403 is connected between at least one of the gas injection assembly and the liquid injection assembly and the fluid inlet 2031.

[0092] In this embodiment, the required experimental fluid is provided to the simulator by a gas injection assembly and a liquid injection assembly. The gas injection assembly includes a flow meter 4012 for regulating and monitoring flow changes and cumulative gas injection volume during gas injection, with a maximum instantaneous flow rate of 30 L / min.

[0093] Furthermore, a one-way check valve 403 is installed between at least one of the gas injection assembly and the liquid injection assembly and the fluid inlet 2031 of the simulator to prevent backflow of fluid within the simulated slurry. This not only ensures the safety of the experimental process, but also prevents fluid leakage from affecting the experimental results.

[0094] The serial numbers of the above application are for descriptive purposes only and do not represent the advantages or disadvantages of the implementation scenarios. The above disclosure only discloses several specific implementation scenarios of the present application, but the present application is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present application.

Claims

1. An organic matter in-situ hydrocarbon generation and gas production simulator, characterized in that: The simulator includes: case; A simulation cavity is provided in the shell, the simulation cavity is used to place the rock core, the simulation cavity has openings at both ends, the simulation cavity is constructed as a cylindrical hollow structure, and the length of the simulation cavity is greater than 10 times the inner diameter of the simulation cavity; End caps, detachably connected to the openings at both ends of the simulation cavity, and provided with a fluid inlet or a fluid outlet; A fluid heating tube is provided in the simulation cavity. The fluid heating tube is constructed as a hollow structure. One end of the fluid heating tube is connected to the fluid inlet, and the other end of the fluid heating tube is connected to the rock core.

2. The in-situ hydrocarbon generation and gas production simulator of organic matter according to claim 1, characterized in that: The simulation cavity is provided with a plurality of through holes, and the simulator further comprises: a receiving tube, passing through the through hole; A sensor assembly, at least part of which is disposed in the containing tube, and the sensor assembly is used to obtain environmental parameters in the simulation cavity.

3. The in-situ hydrocarbon generation and gas production simulator of organic matter according to claim 2, characterized in that: The diameter of the through hole is 2.5mm~3.5mm; The outer diameter of the accommodating tube is 2.5 mm to 3.5 mm, and the wall thickness of the accommodating tube is 0.5 mm to 0.8 mm.

4. The in-situ hydrocarbon generation and gas production simulator of organic matter according to claim 1, characterized in that: The simulator also includes: The thermal insulation layer is coated on the outside of the simulation cavity and is constructed as a detachable structure.

5. The in-situ hydrocarbon generation and gas production simulator of organic matter according to claim 1, characterized in that: The simulator also includes: a heating element, disposed in the housing, and configured to heat the simulation cavity; A fluid transmission tube is provided in the simulation cavity, one end of the fluid transmission tube is connected to the fluid inlet, and the other end of the fluid transmission tube is connected to the rock core.

6. The in-situ hydrocarbon generation and gas production simulator according to any one of claims 1 to 5, characterized in that: The inner diameter of the simulation cavity is 2 cm to 3.8 cm, the length of the simulation cavity is 25 cm to 40 cm, and the wall thickness of the simulation cavity is 1.5 mm to 2 mm.

7. The in-situ hydrocarbon generation and gas production simulator according to any one of claims 1 to 5, characterized in that: The simulator also includes: a sealing member disposed in the housing and connected to the end cover, the sealing member being used to seal the end cover and the simulation cavity; and / or A flow limiting member is provided at the fluid outlet, and is used to adjust the flow rate of the fluid flowing through the fluid outlet.

8. An experimental device for simulating in-situ hydrocarbon generation and gas production from organic matter, characterized in that: The device comprises: Fluid injection systems; The in-situ hydrocarbon generation and gas production simulator according to any one of claims 1 to 7, wherein the fluid inlet of the in-situ hydrocarbon generation and gas production simulator is connected to the fluid injection system; a fluid analysis system connected to the fluid outlet of the organic in-situ hydrocarbon and gas generation simulator; A control system is electrically connected to the fluid injection system, the organic matter in-situ hydrocarbon generation and gas production simulator, and the fluid analysis system.

9. The in-situ hydrocarbon generation and gas production simulation experimental device of organic matter according to claim 8, characterized in that: The fluid analysis system comprises: a pretreatment component connected to the fluid outlet of the organic in-situ hydrocarbon generation and gas production simulator, the pretreatment component being used to pretreat the fluid flowing out of the organic in-situ hydrocarbon generation and gas production simulator, the pretreatment component comprising a cooling system, a pressure reducing valve, a gas-liquid separator and a dryer connected in sequence; The analysis component is connected to the pre-processing component, and the analysis component includes a mounting seat and at least one fluid parameter detector. The at least one fluid parameter detector is used to detect fluid parameters of different types of fluids.

10. The in-situ hydrocarbon and gas production simulation experimental device of organic matter according to claim 8, characterized in that: The fluid injection system comprises: a gas injection assembly connected to the fluid inlet, the gas injection assembly comprising a gas cylinder and a flow meter; a liquid injection assembly connected to the fluid inlet, the liquid injection assembly comprising a liquid reservoir and a pumping device; A check valve is connected between at least one of the gas injection assembly and the liquid injection assembly and the fluid inlet.

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