Continuous light hydrocarbon analysis system

Abstract

The utility model belongs to the technical field of oil gas type identification equipment, and discloses a continuous light hydrocarbon analysis system which comprises a detection control device, a sampling device and a continuous light hydrocarbon analysis device, and the sampling device and the continuous light hydrocarbon analysis device are in communication connection with the detection control device. The continuous light hydrocarbon analysis device comprises a sample injector, a switching component, a light hydrocarbon rapid analysis component and a light hydrocarbon fine analysis component which are in communication connection with the detection control device; and the detection control device is used for controlling the switching component to communicate the light hydrocarbon rapid analysis component with the sample injector or communicate the light hydrocarbon fine analysis component with the sample injector according to the category of the received light hydrocarbon analysis instruction. According to the continuous light hydrocarbon analysis system, the requirements of rapid analysis and fine analysis can be met, and effective information is provided for oil-gas exploration and development, geosteering and difficult layer evaluation.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas type identification equipment, and more specifically, to a continuous light hydrocarbon analysis system. Background Art

[0002] Light hydrocarbon analysis is often used in the field of oil and gas type identification. Light hydrocarbon analysis contains rich geological information. When the cuttings retrieved while drilling lose their oil and gas characterization characteristics, it can quickly identify reservoir fluid properties, evaluate the degree of water flooding and washing, and accurately identify the oil-gas-water interface. Light hydrocarbon analysis technology has many advantages. It can effectively judge water-flooded layers and has important applications in geological evaluation and post-oil field development. It can better adapt to the logging conditions caused by the widespread use of PDC drill bits, which result in severe rock fragmentation and loss of reservoir information carried by the rock cuttings. Among a series of logging technologies centered on rock cutting sample analysis, light hydrocarbon analysis technology is basically unaffected, so it is a logging technology with great development potential.

[0003] In the existing technology, there are two main ways to analyze light hydrocarbons: the first is to use a traditional light hydrocarbon analyzer to manually collect and analyze samples, manually inject samples, and cannot automatically inject samples. From C1 to C9, there are about 103 chromatographic peaks of three-family hydrocarbon components: alkanes, cycloalkanes, and aromatic hydrocarbons, which contain rich geological information and can best reflect the changes in reservoir fluids and crude oil properties, and can achieve detailed analysis of formation fluids. However, since samples from C6 to C9 are liquid under normal conditions, they need to be heated after manual sampling to make them gaseous, which makes it impossible to achieve continuous analysis. The analysis cycle is generally more than 35 minutes, which cannot adapt to the requirements of fast drilling. The second approach is to use an improved light hydrocarbon analyzer, which can continuously detect the contents of 15 hydrocarbon components in drilling fluid, including methane, ethane, propane, n-butane, isobutane, n-pentane, isopentane, n-hexane, methylcyclopentane, benzene, cyclohexane, methylcyclohexane, n-heptane, toluene, and n-octane. The analysis cycle is 60 to 120 seconds, which shows that this method can achieve rapid analysis. However, its disadvantage is that it can only process the 15 spectral peaks before C8 and cannot process the more than 90 spectral peaks thereafter. As a result, most geological information is lost, and the changes in reservoir fluid and crude oil properties cannot be accurately reflected. This fails to demonstrate the unique advantages of light hydrocarbon analysis in exploration and development. Therefore, the existing technology does not have a continuous light hydrocarbon analysis system that can meet the needs of both rapid and detailed analysis. Utility Model Content

[0004] To solve the above technical problems, the utility model provides a continuous light hydrocarbon analysis system that can take into account the needs of rapid analysis and fine analysis, and provide effective information for oil and gas exploration and development, geological guidance and difficult layer evaluation.

[0005] The utility model provides a continuous light hydrocarbon analysis system, including a detection control device, a sampling device and a continuous light hydrocarbon analysis device that are communicatively connected to the detection control device, wherein the continuous light hydrocarbon analysis device includes an injector, a switching component, a light hydrocarbon rapid analysis component and a light hydrocarbon fine analysis component, all of which are communicatively connected to the detection control device, and the detection control device is used to control the switching component to connect the light hydrocarbon rapid analysis component with the injector or to connect the light hydrocarbon fine analysis component with the injector according to the type of the received light hydrocarbon analysis instruction.

[0006] Preferably, in the above-mentioned continuous light hydrocarbon analysis system, the light hydrocarbon rapid analysis component includes a filling column, and the light hydrocarbon fine analysis component includes a capillary column. The detection control device is used to control the switching component to connect the filling column and the injector when receiving a light hydrocarbon rapid analysis instruction, and is used to control the switching component to connect the capillary column and the injector when receiving a light hydrocarbon fine analysis instruction.

[0007] Preferably, in the above-mentioned continuous light hydrocarbon analysis system, the light hydrocarbon rapid analysis component and the light hydrocarbon fine analysis component both further include a detector, a signal amplifier and a data processor connected in sequence, and the switching component includes a first two-position valve and a second two-position valve, the first end of the first two-position valve is connected to the detector, and the second end is alternatively connected to the first end of the packing column or the first end of the capillary column, the first end of the second two-position valve is connected to the injector, and the second end is alternatively connected to the second end of the packing column or the second end of the capillary column, and the first two-position valve and the second two-position valve are interconnected.

[0008] Preferably, in the above-mentioned continuous light hydrocarbon analysis system, the injector is a programmable injector and includes a ten-way valve and a control circuit, wherein the ten-way valve includes valve hole A, valve hole B, valve hole C, valve hole D, valve hole E, valve hole F, valve hole G, valve hole I and valve hole J connected in a circle, and a pretreatment column is connected between the valve hole D and the valve hole G, a quantitative tube is connected between the valve hole C and the valve hole J, the valve hole I and the valve hole F are both connected to the carrier gas inlet pipeline, the valve hole A is connected to the sample gas inlet pipeline, and also includes a power air inlet pipeline for controlling the ten-way valve and a two-position five-way solenoid valve.

[0009] Preferably, in the above-mentioned continuous light hydrocarbon analysis system, a vaporization chamber is further provided between the sample gas inlet pipeline and the A valve hole.

[0010] Preferably, the above-mentioned continuous light hydrocarbon analysis system further comprises a dilution gas inlet pipeline connected in parallel with the sample gas inlet pipeline, and the gases therein are mixed and then enter the vaporization chamber.

[0011] Preferably, in the above-mentioned continuous light hydrocarbon analysis system, the sampling device is a constant temperature negative pressure sampling device.

[0012] Preferably, in the above-mentioned continuous light hydrocarbon analysis system, the sampling device includes a constant temperature degasser and an insulation pipeline.

[0013] Preferably, the above-mentioned continuous light hydrocarbon analysis system further includes a touch display device connected to the detection control device, and the touch display device is used to display detection information and receive light hydrocarbon rapid analysis instructions or light hydrocarbon fine analysis instructions input by the user.

[0014] Preferably, the above-mentioned continuous light hydrocarbon analysis system further includes a power supply device connected to the detection control device, the sampling device, the continuous light hydrocarbon analysis device and the touch display device for power supply.

[0015] It can be seen from the above technical solution that the above-mentioned continuous light hydrocarbon analysis system provided by the present invention, since the continuous light hydrocarbon analysis device includes an injector, a switching component, a light hydrocarbon rapid analysis component and a light hydrocarbon fine analysis component, all of which are communicatively connected to the detection control device, the detection control device is used to control the switching component to connect the light hydrocarbon rapid analysis component with the injector or to connect the light hydrocarbon fine analysis component with the injector according to the type of the received light hydrocarbon analysis instruction. Therefore, the system integrates two types of light hydrocarbon analysis components, which can be adaptively switched according to user needs, thereby taking into account the needs of rapid analysis and fine analysis, and providing effective information for oil and gas exploration and development, geological guidance and difficult layer evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of an embodiment of a continuous light hydrocarbon analysis system provided by the present utility model;

[0018] Figure 2 This is a schematic diagram of the specific structure of a continuous light hydrocarbon analysis device. DETAILED DESCRIPTION

[0019] The core of the utility model is to provide a continuous light hydrocarbon analysis system that can take into account the needs of rapid analysis and fine analysis, and provide effective information for oil and gas exploration and development, geological guidance and difficult layer evaluation.

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides a continuous light hydrocarbon analysis system. Figure 1 As shown, Figure 1 This is a schematic diagram of an embodiment of a continuous light hydrocarbon analysis system provided by the present invention. The continuous light hydrocarbon analysis system may include a detection control device 1 and a sampling device 2 and a continuous light hydrocarbon analysis device 3 that are communicatively connected to the detection control device 1, wherein the continuous light hydrocarbon analysis device 3 includes an injector 31, a switching component 32, a light hydrocarbon rapid analysis component 33 and a light hydrocarbon fine analysis component 34, all of which are communicatively connected to the detection control device 1. The detection control device 1 is used to control the switching component 32 to connect the light hydrocarbon rapid analysis component 33 with the injector 31 or to connect the light hydrocarbon fine analysis component 34 with the injector 31 according to the type of the received light hydrocarbon analysis instruction.

[0022] It should be noted that it can be seen Figure 1 There are two types of connecting lines in the apparatus: the first is a single line, which represents an electrical connection, that is, a communication connection, which is used to realize the transmission of relevant control signals. The detection control device 1 and other components are connected by this single line, so that the detection control device can be used to control the sampling device to sample or stop sampling, and can control whether the injector injects samples, control the switching component to switch to the light hydrocarbon fine analysis component or the light hydrocarbon rapid analysis component, in addition, it can also control whether the light hydrocarbon fine analysis component performs fine analysis and whether the light hydrocarbon rapid analysis component performs rapid analysis, etc. These components are all controlled by this detection control device; the second is a double line, which represents the gas flow path, from Figure 1It can be seen that the gas flow path is that the gas first reaches the sampling device 2, and then is introduced into the continuous light hydrocarbon analysis device 3 by the injector 31, and then passes through the switching component 32. Here, the switching component 32 controls the gas to enter the light hydrocarbon fine analysis component 34 or the light hydrocarbon rapid analysis component 33. Specifically, under normal circumstances, a rapid analysis of light hydrocarbons of the C1 to C815 peaks can be performed. When the rapid analysis result reaches the threshold set by the system, or when drilling into a complex oil and gas layer, the gas path is switched to perform a fine analysis of the C1 to C9103 peaks to meet different geological exploration needs. It can be seen that this avoids the problem of different analysis sample results due to different user levels, thereby affecting the accuracy of the sample analysis results. The fusion of the two modes of rapid analysis and fine analysis not only adapts to the current fast-paced drilling mode, but also retains the unique advantages of light hydrocarbon fine analysis, and can achieve development wells, unconventional horizontal well geological guidance, complex oil and gas type identification, and drilling speed and efficiency improvement.

[0023] It can be seen from the above technical solution that in the embodiment of the above-mentioned continuous light hydrocarbon analysis system provided by the present invention, since the continuous light hydrocarbon analysis device includes an injector, a switching component, a light hydrocarbon rapid analysis component and a light hydrocarbon fine analysis component, all of which are communicatively connected to the detection control device, the detection control device is used to control the switching component to connect the light hydrocarbon rapid analysis component with the injector or to connect the light hydrocarbon fine analysis component with the injector according to the category of the received light hydrocarbon analysis instruction. Therefore, the system integrates two types of light hydrocarbon analysis components, which can be adaptively switched according to user needs, thereby taking into account the needs of rapid analysis and fine analysis, and providing effective information for oil and gas exploration and development, geological guidance and difficult layer evaluation.

[0024] In a specific embodiment of the above-mentioned continuous light hydrocarbon analysis system, reference Figure 2 , Figure 2 This is a specific structural diagram of a continuous light hydrocarbon analysis device. The above-mentioned light hydrocarbon rapid analysis component 33 may include a filling column 331, and the above-mentioned light hydrocarbon fine analysis component 34 may include a capillary column 341. The above-mentioned detection control device 1 is used to control the switching component 32 to connect the filling column and the injector 31 when receiving a light hydrocarbon rapid analysis instruction, and is used to control the switching component 32 to connect the capillary column and the injector 31 when receiving a light hydrocarbon fine analysis instruction.

[0025] On the basis of this embodiment, continue to refer to Figure 2The light hydrocarbon rapid analysis component 33 and the light hydrocarbon fine analysis component 34 may also include a detector 35, a signal amplifier 36 and a data processor 37 connected in sequence. The above-mentioned switching component 32 may include a first two-position valve 321 and a second two-position valve 322. The first end of the first two-position valve 321 is connected to the detector 35, and the second end is connected to the first end of the packing column 331 or the first end of the capillary column 341 in an alternative manner. The first end of the second two-position valve 322 is connected to the injector 31, and the second end is connected to the second end of the packing column 331 or the second end of the capillary column 341 in an alternative manner. The first two-position valve 321 and the second two-position valve 322 are linked to each other. The meaning of this linkage is that the two can only connect the packing column 331 with the injector 31 and the detector 35 at the same time, or connect the capillary column 341 with the injector 31 and the detector 35 at the same time. One valve cannot be connected to the packing column 331 while the other valve is connected to the capillary column 341, because this is meaningless.

[0026] It should be noted that, based on this specific structure, when performing rapid analysis, different components in the sample gas are separated in the filling column 331 according to their different interaction forces with the stationary phase. The separated components can be detected by the detector 35 to generate a chromatogram, and then the signal is amplified by the signal amplifier 36. Finally, the signal is processed by the data processor 37. By analyzing the chromatogram, the retention time and peak area of ​​each component are determined, thereby calculating the content of multiple components. When performing detailed analysis, it is necessary to switch to the capillary column 341. Generally speaking, the capillary column uses a long tube (up to tens of meters in length) with an extremely fine inner diameter (usually between 0.1-0.53 mm). The inner wall is coated with a stationary phase. The sample moves along the capillary column under the action of a carrier gas (usually an inert gas such as helium or nitrogen). Different components are separated according to their different interaction forces with the stationary phase and the carrier gas. Due to its high column efficiency, the capillary column can provide higher separation efficiency than a packed column. Due to the small inner diameter of the column, the diffusion of the sample in the column is small, and the analysis time is usually short, which is suitable for analyzing trace components in complex samples. The specific process is that the sample gas is separated in the capillary column based on its interaction with the stationary phase. The separated components are detected by a detector. After signal amplification, the chromatogram is finally analyzed to determine the retention time and peak area of ​​each component, and the content of each component is calculated.

[0027] In another specific embodiment of the above-mentioned continuous light hydrocarbon analysis system, continue to refer to Figure 2The above-mentioned injector 31 can be a programmable injector, so that the sample gas transported through the insulation pipeline can be transmitted to the rapid analysis flow path or the fine analysis flow path for analysis according to the settings of the operating system software or through manual intervention, and the programmable injector can include a ten-way valve 311 and a control circuit (not shown in the figure), wherein the ten-way valve 311 can include valve holes A, B, C, D, E, F, G, I and J connected in a circle, and a pretreatment column 312 is connected between the valve holes D and G. The pretreatment column is mainly used to remove components after C8 (rapid analysis mode) or C9 (fine analysis mode) to avoid contamination of the chromatographic column and ensure that the next analysis cycle is not affected by heavy components. A quantitative tube 313 is connected between the C valve hole and the J valve hole. This quantitative tube is used to collect and quantify gas and light hydrocarbon components. It can include a glass tube body with a gas chamber inside, equipped with a needle valve and a sealing pressure cap. The I valve hole and the F valve hole are both connected to the carrier gas inlet pipeline 4. The carrier gas here is generally air, but it can also be adjusted according to actual needs. There is no restriction here. The A valve hole is connected to the sample gas inlet pipeline 5, and there can be a 0.1MPa / 20ml accessory air resistance 51. It also includes a powered air inlet pipeline 6 for controlling the ten-way valve 311 and a two-position five-way solenoid valve 7. It should be noted that this powered air inlet pipeline is a pipeline system used to transport compressed air or other types of gas to equipment or tools that require powered air. This pipeline is designed to withstand a certain pressure, which can be 0.3MPa, and it is necessary to ensure the efficiency and safety of gas flow. It is usually made of durable materials such as steel pipe, PVC pipe, aluminum pipe or stainless steel pipe to withstand the required pressure and environmental conditions. This two-position five-way solenoid valve can have two working positions and five interfaces: one air inlet, two working ports and two exhaust ports. When the coil of the solenoid valve is energized, the electromagnetic force drives the pilot valve to operate, thereby changing the direction of the airflow. For example, in the initial state, the air inlet is connected to one of the working ports. After the coil is energized, the air inlet will switch to the other working port, and the original working port will be converted to exhaust. After power is cut off, the valve will be reset to its original state due to the action of the spring. When selecting a two-position five-way solenoid valve, you need to consider whether the power-off holding function is required. If you need to maintain the current position in the event of a power outage, you can choose a double-electric solenoid valve because it has a power-off holding function. If you do not need to maintain power off, you can choose a lower-cost single-electric solenoid valve.Based on this embodiment, a vaporization chamber 52 may be further provided between the sample gas inlet line 5 and valve hole A. This vaporization chamber converts liquid or solid samples into a gaseous state before entering the chromatographic column. It may be equipped with a heating element to quickly heat the sample to a certain temperature to ensure complete sample vaporization. The material and design of the vaporization chamber should ensure that it does not chemically react with the sample at high temperatures. It is typically constructed of stainless steel or other inert materials. The vaporization chamber can be independently temperature-controlled to accommodate samples with different boiling points. Furthermore, based on this embodiment, a dilution gas inlet line 8 may be included in parallel with the sample gas inlet line 5. The gases in the two mixed and then enter the vaporization chamber 52. It should be noted that this line 8 is used to introduce dilution gas to facilitate the transmission and separation of the sample gaseous molecules through the chromatographic column. The dilution gas that can be used may be nitrogen, helium, hydrogen, or argon. Furthermore, this gas line may have an air resistance of 0.1 MPa / 20 ml. This is a preferred solution. In some other cases, dilution is not required, so this dilution gas inlet line 8 may also be omitted.

[0028] In another specific embodiment of the above-mentioned continuous light hydrocarbon analysis system, the sampling device 2 therein can preferably be a constant temperature negative pressure sampling device, which can sample by means of constant temperature and negative pressure while maintaining the original state of the sample. It is usually equipped with a heating system, which can maintain the sampling environment at a specific temperature to prevent the sample from changing in temperature during the sampling process. Moreover, by generating negative pressure, gas or liquid samples can be drawn from the container without introducing outside air, thereby ensuring the purity of the sample. It also needs to have good sealing performance to ensure that no external contaminants enter during the sampling process. Furthermore, the sampling device 2 may include a constant temperature degasser and an insulated pipeline. This constant temperature degasser is used to remove dissolved gases in liquid samples to avoid interference from these gases in subsequent analysis processes. It can continuously sample and purify drilling fluid, and transport the sample to the programmable injector of the continuous light hydrocarbon analyzer through the insulated pipeline. When working, it can maintain a constant temperature of 90°C to ensure that the obtained sample is transported in a gaseous state without solidifying.

[0029] In a preferred embodiment of the above-mentioned continuous light hydrocarbon analysis system, continue to refer to Figure 1, and can also include a touch display device 9 connected to the detection control device 1, the touch display device 9 is used to display detection information and receive light hydrocarbon rapid analysis instructions or light hydrocarbon fine analysis instructions input by the user. It should be noted that its display part can be a liquid crystal display (LCD), a light emitting diode (LED) screen or an organic light emitting diode (OLED) screen, which can be selected according to actual needs, and the touch part can adopt capacitive touch, resistive touch, acoustic wave touch or infrared touch, which is not limited here. In this case, the on-site operator can input instructions by touch on this touch display device 9 according to actual conditions to control the entire system to perform light hydrocarbon rapid analysis or light hydrocarbon fine analysis. After the analysis is completed, the analysis results and other information can also be displayed on the touch display device 9. It can be seen that such human-computer interaction is clearer and simpler, making the on-site detection process more efficient. On this basis, it can further include a power supply device (not shown in the figure) that is connected to the detection control device 1, the sampling device 2, the continuous light hydrocarbon analysis device 3 and the touch display device 9 for power supply. Its function is to supply power to these devices. It can be composed of a rectifier device, a DC distribution device, a DC converter, etc. and related distribution lines, receive 220VAC / 50Hz power input, provide the required power for the system, have overvoltage, overload and other protection functions, can cut off the power supply or take other protective measures under abnormal circumstances to protect the safety of equipment and personnel.

[0030] The above detection control device can use operating system software to perform various controls. This operating system software can manage software and hardware resources and control program execution, and process, analyze, display, and store the collected information of the dual-flow detection unit. Specifically, according to the instructions issued by the operating system software, dual-flow switching, analysis and backwash process switching, programmed temperature control, and detection and analysis control can be realized, thereby completing the entire analysis process. Figure 2 For example, the analytical backflush process can be switched as follows: 1) Under normal conditions, the sample gas, driven by a peristaltic negative pressure pump, is vented through ports A and J of the ten-port valve, quantitative tube 313, ports C, and B. A carrier gas path passes through ports F and G of the ten-port valve and pretreatment column 312, venting any residual components in the pretreatment column through ports D and E to ensure a clean pretreatment column for the next analysis. 2) According to the set analysis cycle, when the system enters the analysis process, the carrier gas carries the sample gas in quantitative tube 313 through ports C and D to the pretreatment column 312 for separation.

[0031] Furthermore, the dual flow path switching process is as follows:

[0032] 1) The sample separated by the pretreatment column 312 is generally carried by the carrier gas, passes through the second two-position valve 322 into the packing column 331, passes through the first two-position valve 321 and reaches the detector 35 for rapid analysis, thereby achieving rapid analysis of the C1 to C815 peaks.

[0033] 2) When the rapid analysis results reach the threshold set by the system, or when a complex oil and gas layer is encountered, the first and second two-position valves are switched according to manual instructions. The sample separated by the pretreatment column is carried in by the carrier gas, passes through the second two-position valve 322, enters the capillary column 341, and passes through the first two-position valve 321 to reach the detector 35 for precise analysis of the C1 to C9103 peaks to meet different geological exploration needs.

[0034] The following is an explanation of the programmed temperature control:

[0035] By default, the operating system software sets the vaporization chamber temperature to a constant temperature of 200°C and the detector temperature to a constant temperature of 210°C.

[0036] Column oven heating program flow:

[0037] Stage 1: starting temperature 40°C, residence time 5 minutes;

[0038] The second stage: heating to 70°C at a rate of 3°C / min, dwelling for 0 minutes;

[0039] Stage 3: Heat to 90°C at a rate of 4°C / min and hold for 2 minutes;

[0040] Stage 4: Heating at a rate of 5°C / min to 110°C, and holding for 3 minutes.

[0041] Column oven cooling program settings:

[0042] After the program temperature rise is completed, the DC cooling fan is turned on, and the door closing temperature difference is set to 5°C. That is, when the column box temperature drops to 5°C below the initial temperature (when the initial temperature is 40°C and the column box temperature drops below 35°C), the cooling fan is turned off;

[0043] The door opening temperature difference is set to 7°C, that is, the cooling fan turns on when the column box temperature rises to 7°C higher than the initial temperature (when the initial temperature is 40°C and the column box temperature is higher than 47°C);

[0044] Until the column box temperature stabilizes at around 40°C.

[0045] In summary, since the above-mentioned light hydrocarbon analysis system includes two sets of gas detection devices, which respectively realize the rapid analysis of C1 to C815 peaks and the fine analysis of C1 to C9103 peaks, it can meet different geological exploration needs.

[0046] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A continuous light hydrocarbon analysis system, characterized in that: It includes a detection control device, a sampling device and a continuous light hydrocarbon analysis device that are communicatively connected to the detection control device, wherein the continuous light hydrocarbon analysis device includes an injector, a switching component, a light hydrocarbon rapid analysis component and a light hydrocarbon fine analysis component that are all communicatively connected to the detection control device, and the detection control device is used to control the switching component to connect the light hydrocarbon rapid analysis component with the injector or to connect the light hydrocarbon fine analysis component with the injector according to the type of the received light hydrocarbon analysis instruction.

2. The continuous light hydrocarbon analysis system according to claim 1, characterized in that: The light hydrocarbon rapid analysis component includes a filling column, and the light hydrocarbon fine analysis component includes a capillary column. The detection control device is used to control the switching component to connect the filling column and the injector when receiving a light hydrocarbon rapid analysis instruction, and is used to control the switching component to connect the capillary column and the injector when receiving a light hydrocarbon fine analysis instruction.

3. The continuous light hydrocarbon analysis system according to claim 2, characterized in that: The light hydrocarbon rapid analysis component and the light hydrocarbon fine analysis component both further include a detector, a signal amplifier, and a data processor connected in sequence. The switching component includes a first two-position valve and a second two-position valve. The first end of the first two-position valve is connected to the detector, and the second end is alternatively connected to the first end of the packing column or the first end of the capillary column. The first end of the second two-position valve is connected to the injector, and the second end is alternatively connected to the second end of the packing column or the second end of the capillary column, and the first two-position valve and the second two-position valve are interconnected.

4. The continuous light hydrocarbon analysis system according to claim 1, characterized in that: The injector is a programmable injector and includes a ten-way valve and a control circuit, wherein the ten-way valve includes valve hole A, valve hole B, valve hole C, valve hole D, valve hole E, valve hole F, valve hole G, valve hole I and valve hole J connected in a circle, and a pretreatment column is connected between the valve hole D and the valve hole G, a quantitative tube is connected between the valve hole C and the valve hole J, the valve hole I and the valve hole F are both connected to a carrier gas inlet pipeline, the valve hole A is connected to a sample gas inlet pipeline, and also includes a power air inlet pipeline for controlling the ten-way valve and a two-position five-way solenoid valve.

5. The continuous light hydrocarbon analysis system according to claim 4, characterized in that: A vaporization chamber is also provided between the sample gas inlet pipeline and the A valve hole.

6. The continuous light hydrocarbon analysis system according to claim 5, characterized in that: It also includes a dilution gas inlet pipeline connected in parallel with the sample gas inlet pipeline, and the gases in the two are mixed and then enter the vaporization chamber.

7. The continuous light hydrocarbon analysis system according to claim 1, characterized in that: The sampling device is a constant temperature negative pressure sampling device.

8. The continuous light hydrocarbon analysis system according to claim 7, characterized in that: The sampling device comprises a constant temperature degasser and a heat preservation pipeline.

9. The continuous light hydrocarbon analysis system according to any one of claims 1 to 8, characterized in that: It also includes a touch display device connected to the detection control device, and the touch display device is used to display detection information and receive light hydrocarbon rapid analysis instructions or light hydrocarbon fine analysis instructions input by the user.

10. The continuous light hydrocarbon analysis system according to claim 9, characterized in that: It also includes a power supply device connected to the detection control device, the sampling device, the continuous light hydrocarbon analysis device and the touch display device for power supply.

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