Crude oil component separation monitoring method, device, equipment, medium and product

Abstract

The invention provides a crude oil component separation monitoring method, device and equipment, a medium and a product. The invention discloses monitoring equipment applied to crude oil component separation. The monitoring equipment comprises a closed container, a quartz crystal chip, an oscillating circuit and a controller, a quartz crystal chip which is horizontally suspended is arranged in the closed container; the quartz crystal chip is connected with the oscillating circuit; the oscillation circuit applies alternating voltage to the quartz crystal chip, the quartz crystal chip vibrates, oscillation frequency signals are collected, and therefore a reference oscillation frequency value is obtained; in the component separation process of the crude oil to be detected, acquiring oscillation frequency change values of the quartz crystal chip at different moments; calculating mass change values of surface sediments of the quartz crystal chip at different moments; acquiring a change curve of the mass change value of the surface sediment along with time according to the mass change value of the surface sediment; the slope of the change curve is the separation rate of the components of the to-be-detected crude oil, and the change of the separation rate along with time reflects the separation process of the components of the crude oil.

Description

Technical Field

[0001] This application relates to the field of reservoir development and testing technology, and in particular to a monitoring method, apparatus, equipment, medium and product for crude oil component separation. Background Technology

[0002] During reservoir development, temperature and pressure variations throughout the entire process, from the underground oil layer to the wellbore, or the extraction process during CO2 injection, can lead to differences in the flow and separation of different components in crude oil. The deposition of heavy oil components after separation can cause a series of problems, such as impeded crude oil migration in reservoir fractures and wax deposition in the wellbore. Therefore, accurate measurement of the crude oil component separation process is crucial for adjusting development plans and predicting recovery rates.

[0003] Currently, monitoring of crude oil component separation mainly relies on differential pressure monitoring, which indirectly infers sediment thickness by measuring changes in pressure gradient during fluid flow. However, this method has low sensitivity to thin sediment layers and is greatly affected by parameters such as fluid viscosity and flow velocity, making it difficult to achieve high-precision monitoring of crude oil component separation. Summary of the Invention

[0004] This application provides a method, apparatus, equipment, medium, and product for monitoring crude oil component separation, in order to improve the monitoring accuracy of crude oil component separation.

[0005] In a first aspect, embodiments of this application provide a monitoring method for crude oil component separation, applied to a monitoring device for crude oil component separation. The monitoring device for crude oil component separation includes: a sealed container, a quartz crystal chip, an oscillation circuit, and a controller; a horizontally suspended quartz crystal chip is disposed inside the sealed container; the quartz crystal chip is connected to the oscillation circuit; the method includes: applying an alternating voltage to the quartz crystal chip through the oscillation circuit to cause the quartz crystal chip to vibrate, and acquiring the oscillation frequency signal of the quartz crystal chip; the controller obtains a reference oscillation frequency value based on the oscillation frequency signal; wherein the reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in the sealed container;

[0006] During the component separation process of the crude oil to be tested, the oscillation circuit continuously acquires the oscillation frequency signal of the quartz crystal chip at different times. The crude oil to be tested is placed in a sealed container, and the internal environment of the sealed container is changed to separate the components of the crude oil. The controller obtains the oscillation frequency change value of the quartz crystal chip at different times based on the oscillation frequency signal at different times. The controller calculates the mass change value of the surface deposits of the quartz crystal chip at different times based on the oscillation frequency change value and the reference oscillation frequency value. During the component separation process of the crude oil to be tested, the heavy components in the crude oil to be tested deposit and are adsorbed on the surface of the quartz crystal chip. The controller obtains the mass change value of the surface deposits over time based on the mass change value of the surface deposits at different times. The slope of the curve represents the separation rate of the components of the crude oil to be tested, and the change in the separation rate over time reflects the dynamic process of crude oil component separation.

[0007] In one possible implementation, the controller calculates the mass change of the surface deposit on the quartz crystal chip at different times based on the oscillation frequency change value at different times and the reference oscillation frequency value, including:

[0008]

[0009] in, This represents the change in oscillation frequency at different times. This represents the reference oscillation frequency value, and A represents the contact area of ​​the quartz crystal chip. This indicates the density of the quartz crystal chip. This represents the shear modulus of a quartz crystal chip. This represents the change in mass of the surface deposit at different times, where m represents the mass of the quartz crystal chip.

[0010] In one possible implementation, before the components of the crude oil to be tested are separated, the process further includes: when the controller monitors the oscillation frequency value of the quartz crystal chip to reach a stable value, the component separation process of the crude oil to be tested is then carried out.

[0011] In one possible implementation, the method further includes: using an adaptive filtering algorithm to perform noise reduction processing on the oscillation frequency signal.

[0012] In one possible implementation, the monitoring device for crude oil component separation further includes an image sensor; the method further includes: the image sensor acquiring images of surface deposits on a quartz crystal chip at different times; the controller acquiring morphological features of the surface deposits at different times based on the images of the surface deposits; and the controller correlating the morphological features of the surface deposits at different times with the mass change values ​​of the surface deposits to obtain the correspondence between the mass change values ​​and morphological features of the surface deposits at different times.

[0013] Secondly, embodiments of this application provide a monitoring device for crude oil component separation, applied to a monitoring device for crude oil component separation. The monitoring device for crude oil component separation includes: a sealed container, a quartz crystal chip, an oscillation circuit, and a controller; a horizontally suspended quartz crystal chip is disposed inside the sealed container; the quartz crystal chip is connected to the oscillation circuit; the device includes: a first acquisition module, used to apply an alternating voltage to the quartz crystal chip through the oscillation circuit to cause the quartz crystal chip to vibrate, and acquire the oscillation frequency signal of the quartz crystal chip; a first acquisition module, used by the controller to acquire a reference oscillation frequency value based on the oscillation frequency signal; wherein the reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in the sealed container; a second acquisition module, used by the oscillation circuit to continuously acquire the oscillation frequency signal of the quartz crystal chip at different times during the component separation process of the crude oil to be tested; wherein The test involves three modules: a first module places the crude oil to be tested in a sealed container, and the internal environment of the container is altered to separate the components of the crude oil; a second module acquires the oscillation frequency changes of a quartz crystal chip at different times based on the oscillation frequency signals at different times; a third module calculates the mass change of surface deposits on the quartz crystal chip at different times based on the oscillation frequency changes; during the component separation process of the crude oil, heavy components in the crude oil are deposited and adsorbed on the surface of the quartz crystal chip; and a fourth module acquires a curve showing the mass change of surface deposits over time based on the mass change of surface deposits at different times. The slope of the curve represents the separation rate of the components of the crude oil, and the change in the separation rate over time reflects the dynamic process of crude oil component separation.

[0014] In one possible implementation, the computing module includes:

[0015]

[0016] in, This represents the change in oscillation frequency at different times. This represents the reference oscillation frequency value, and A represents the contact area of ​​the quartz crystal chip. This indicates the density of the quartz crystal chip. This represents the shear modulus of a quartz crystal chip. This represents the change in mass of the surface deposit at different times, where m represents the mass of the quartz crystal chip.

[0017] Thirdly, embodiments of this application provide a monitoring device for crude oil component separation, including: a memory and a processor;

[0018] The memory stores instructions that the computer executes;

[0019] The processor executes computer execution instructions stored in memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0020] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0021] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0022] The crude oil component separation monitoring method, apparatus, equipment, medium, and product provided in this application apply an alternating voltage to a quartz crystal chip via an oscillation circuit, exciting the piezoelectric effect of the quartz crystal chip. The quartz crystal chip utilizes the piezoelectric effect to generate mechanical vibration under the alternating voltage. The oscillation circuit collects the oscillation frequency signal, thereby obtaining a reference oscillation frequency value. The reference oscillation frequency value is an unloaded reference in a closed container without interference from the crude oil being tested, serving as a reference for subsequent changes in the oscillation frequency. During the component separation process of the crude oil being tested in the closed container, deposits will form on the surface of the quartz crystal chip. Changes in the mass of these deposits directly affect the oscillation frequency of the quartz crystal chip; even small changes in the mass of the deposits can affect the oscillation frequency of the quartz crystal chip, thus exhibiting high sensitivity to thin layers of deposits. By continuously monitoring the oscillation frequency changes at different times and comparing them with a reference oscillation frequency, the mass change of surface deposits on the quartz crystal chip at different times is calculated. The slope of the curve showing the mass change of surface deposits over time represents the separation rate of the components in the crude oil being tested. The slope of the curve at different times, i.e., the change in separation rate over time, reflects the dynamic process of crude oil component separation. This application utilizes the oscillation generated by the piezoelectric effect of the quartz crystal chip and the relationship between the adaptive crystal oscillation frequency and the mass of surface deposits to convert the mass change of deposits into a quantifiable oscillation frequency value, significantly improving the monitoring accuracy of crude oil component separation. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 This is a schematic diagram of the architecture of a monitoring device for crude oil component separation provided in an embodiment of this application;

[0025] Figure 2A schematic flowchart illustrating the monitoring method for crude oil component separation provided in this application embodiment;

[0026] Figure 3 The curve showing the change of the difference between the oscillation frequency value of the quartz crystal chip and the reference oscillation frequency value over time during the cooling process provided in this embodiment of the application;

[0027] Figure 4 The curve showing the change in mass of the waxy component of the crude oil to be tested over time is provided in the embodiments of this application.

[0028] Figure 5 This is a schematic diagram of the structure of the monitoring device for crude oil component separation provided in the embodiments of this application;

[0029] Figure 6 This is a schematic diagram of the structure of a monitoring device for crude oil component separation provided in an embodiment of this application.

[0030] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0032] To address the aforementioned technical problems, this application proposes the following technical concept: To address the issue of insufficient monitoring accuracy, the inventors introduce the piezoelectric effect principle of a quartz crystal chip. Utilizing the linear relationship between the oscillation frequency of the quartz crystal chip and the mass change of surface deposits, the mass change is converted into a quantifiable oscillation frequency. Leveraging the high sensitivity of the quartz crystal chip, sub-microgram-level mass changes in deposits can be detected, overcoming the limitations of traditional methods for detecting thin-layer deposits and significantly improving monitoring accuracy. Specifically, an alternating voltage is applied to the quartz crystal chip through an oscillation circuit to excite its piezoelectric effect. The quartz crystal chip utilizes the piezoelectric effect to generate mechanical vibration under the alternating voltage. The oscillation circuit collects the oscillation frequency signal, thereby obtaining a reference oscillation frequency value. This reference oscillation frequency value serves as an unloaded reference in a sealed container without interference from the crude oil being tested, acting as a reference for subsequent oscillation frequency changes. During the component separation process of the crude oil under test in a closed container, deposits will form on the surface of the quartz crystal chip. Changes in the mass of these deposits directly affect the oscillation frequency of the quartz crystal chip. Even small changes in deposit mass can affect the oscillation frequency, thus the chip is highly sensitive to thin layers of deposits. By continuously monitoring the oscillation frequency changes at different times and comparing them with a reference oscillation frequency, the mass change of the surface deposits on the quartz crystal chip at different times is calculated. The slope of the curve showing the mass change of the surface deposits over time represents the separation rate of the crude oil components. The slope of this curve at different times, i.e., the change in the separation rate over time, reflects the dynamic process of crude oil component separation.

[0033] Figure 1 This is a schematic diagram of the architecture of the monitoring device for crude oil component separation provided in the embodiments of this application, as shown below. Figure 1 As shown, it includes: a sealed container 1, a quartz crystal chip 2, an oscillation circuit 3, and a controller 4.

[0034] In this embodiment, a quartz crystal chip 2 is horizontally suspended inside the sealed container 1; the quartz crystal chip 2 is connected to the oscillation circuit 3; the oscillation circuit 3 is connected to the controller 4.

[0035] In this embodiment, the oscillation circuit 3 applies an alternating voltage to the quartz crystal chip 2 to cause it to vibrate, and collects the oscillation frequency signal of the quartz crystal chip 2. The controller 4 obtains a reference oscillation frequency value based on the oscillation frequency signal. The reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in the sealed container 1. During the component separation process of the crude oil to be tested, the oscillation circuit 3 continuously collects the oscillation frequency signal of the quartz crystal chip 2 at different times. The crude oil to be tested is placed in the sealed container 1, and the internal environment of the sealed container 1 is changed to separate the components of the crude oil to be tested. The controller 4 obtains the reference oscillation frequency signal based on the oscillation frequency signal at different times. The controller 4 obtains the oscillation frequency change value of the quartz crystal chip 2 at different times; the controller 4 calculates the mass change value of the surface deposits of the quartz crystal chip 2 at different times based on the oscillation frequency change value and the reference oscillation frequency value at different times; wherein, during the component separation process of the crude oil to be tested, the heavy components in the crude oil to be tested deposit and are adsorbed on the surface of the quartz crystal chip 2; the controller 4 obtains the mass change value of the surface deposits over time based on the mass change value of the surface deposits at different times; wherein, the slope of the change curve is the separation rate of the components of the crude oil to be tested, and the change of the separation rate over time reflects the dynamic process of crude oil component separation.

[0036] In this embodiment, the monitoring equipment for crude oil component separation also includes: an inlet cylinder 5, a return cylinder 6, an injection pump 7, an explosion-proof device 8, an air injection device 9, a pressure relief valve 10, a temperature measuring device 11, and a heating device 12.

[0037] Furthermore, the network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0038] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0039] Figure 2 This is a flowchart illustrating a monitoring method for crude oil component separation provided in an embodiment of this application. The method is applied to a monitoring device for crude oil component separation, which includes: a sealed container, a quartz crystal chip, an oscillation circuit, and a controller. The sealed container contains a horizontally suspended quartz crystal chip. The quartz crystal chip is connected to the oscillation circuit. The method includes:

[0040] S201: An alternating voltage is applied to the quartz crystal chip through an oscillation circuit to make the quartz crystal chip vibrate, and the oscillation frequency signal of the quartz crystal chip is collected.

[0041] In this embodiment, an alternating voltage is applied to the quartz crystal chip via an oscillation circuit to excite the piezoelectric effect of the quartz crystal chip. The quartz crystal chip utilizes the piezoelectric effect to generate mechanical vibration under the action of the alternating voltage, and the oscillation circuit collects the oscillation frequency signal.

[0042] Quartz crystal chips are crystal devices that use the piezoelectric effect to convert mechanical vibrations into electrical signals, such as AT-cut quartz crystals.

[0043] In this embodiment, the quartz crystal chip should be placed horizontally suspended in the center of the sealed container to ensure that the pressure on both sides of the quartz crystal chip is equal, thus avoiding uneven pressure on the quartz crystal chip and its breakage during pressurization.

[0044] The oscillation circuit is an electronic circuit used to drive the quartz crystal chip to vibrate and to collect the oscillation frequency signal.

[0045] In this embodiment, an adaptive filtering algorithm is used to reduce noise in the oscillation frequency signal.

[0046] Among them, the adaptive filtering algorithm is used to dynamically separate effective signals from noise.

[0047] In this embodiment, an adaptive filtering algorithm, such as Kalman filtering, is used to reduce noise in the oscillation frequency signal, and the filtering parameters are dynamically adjusted according to the noise characteristics. This step improves the signal-to-noise ratio for thin-layer sediment detection through signal processing algorithm optimization. It enhances the detectability of minute mass changes and ensures the reliability of monitoring results.

[0048] S202: The controller obtains the reference oscillation frequency value based on the oscillation frequency signal; the reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in a closed container.

[0049] The crude oil to be tested is a crude oil sample whose component separation process needs to be monitored, and it may contain heavy components such as waxes and asphaltenes.

[0050] In this embodiment, the purpose of obtaining the reference oscillation frequency value is to establish an unloaded reference without interference from the crude oil under test, and to obtain the reference oscillation frequency value of the quartz crystal chip in a state where there are no deposits on the surface.

[0051] S203: During the component separation process of the crude oil to be tested, the oscillation circuit continuously collects the oscillation frequency signal of the quartz crystal chip at different times; wherein, the crude oil to be tested is placed in a sealed container, and the components of the crude oil to be tested are separated by changing the internal environment of the sealed container.

[0052] In this embodiment, the sealed container is a sealed cavity that can withstand high temperature and high pressure conditions, such as 20MPa and 90℃, and is used to simulate the environment of an oil reservoir or wellbore.

[0053] In this embodiment, the crude oil to be tested is first placed in a sealed container and kept in equilibrium under preset temperature and pressure conditions (e.g., 20 MPa, 90°C). The oscillation frequency of the quartz crystal chip contacts the crude oil to reach a new equilibrium state. At this time, changing the internal environment of the sealed container, such as cooling or injecting a non-polar gas, induces the separation of crude oil components.

[0054] Optionally, by cooling the crude oil, such as to 50°C, or by injecting a non-polar gas, heavy components, such as waxes, in the crude oil can be induced to deposit on the surface of a quartz crystal chip. Changes in the mass of the deposits directly affect the oscillation frequency; monitoring changes in the oscillation frequency signal at different times can characterize the separation process.

[0055] Non-polar gases such as CO2 or N2 are used to simulate environmental changes during the gas injection oil displacement process.

[0056] In this embodiment, before separating the components of the crude oil to be tested, the controller monitors the oscillation frequency value of the quartz crystal chip until it reaches a stable value before proceeding with the component separation process of the crude oil to be tested.

[0057] In this embodiment, if the maximum fluctuation amplitude of the oscillation frequency value of the quartz crystal chip is less than or equal to a preset fluctuation threshold within a preset time range, the oscillation frequency value of the quartz crystal chip is determined to have reached stability. Both the preset time range and the preset fluctuation threshold are pre-set and can be adjusted according to actual conditions.

[0058] S204: The controller obtains the oscillation frequency change value of the quartz crystal chip at different times based on the oscillation frequency signal at different times.

[0059] In this embodiment, the oscillation frequency change value quantifies the difference between the real-time oscillation frequency value and the reference oscillation frequency value, reflecting the change in the vibration of the quartz crystal chip. Specifically, the controller maps the real-time oscillation frequency value to the reference oscillation frequency value at each time point according to the timestamp, and calculates the oscillation frequency change value at each time point.

[0060] refer to Figure 3 , Figure 3 The curve showing the change over time of the difference between the oscillation frequency value of the quartz crystal chip and the reference oscillation frequency value during the cooling process provided in this embodiment of the application. Figure 3 As shown, the curves illustrating the change over time of the difference between the oscillation frequency value and the reference oscillation frequency value of the quartz crystal chip under two conditions: cooling to 50℃ and 30℃.

[0061] S205: The controller calculates the mass change of the surface deposits of the quartz crystal chip at different times based on the oscillation frequency change value at different times; wherein, during the component separation process of the crude oil to be tested, the heavy components in the crude oil to be tested deposit and are adsorbed on the surface of the quartz crystal chip.

[0062] In this embodiment, the mass change of the surface deposits on the quartz crystal chip at different times is calculated based on the Sauerbrey equation.

[0063] The Sauerbrey equation is a mathematical model that describes the relationship between the oscillation frequency of a quartz crystal chip and the quality of the surface deposits.

[0064] Specifically, based on the oscillation frequency variation at different times and the reference oscillation frequency, the mass variation of the surface deposits on the quartz crystal chip at different times is calculated using the following formula:

[0065]

[0066] in, This represents the change in oscillation frequency at different times. This represents the reference oscillation frequency value, and A represents the contact area of ​​the quartz crystal chip. This indicates the density of the quartz crystal chip. This represents the shear modulus of a quartz crystal chip. This represents the change in mass of the surface deposit at different times, where m represents the mass of the quartz crystal chip.

[0067] In this embodiment, the mass change of the surface deposit at different times is obtained by inverse calculation based on the oscillation frequency change value at different times and the reference oscillation frequency value.

[0068] In this embodiment, timestamps at different times and mass changes of surface deposits at different times are stored. The unit of mass change of surface deposits is μg, and the accuracy can reach 0.0001μg.

[0069] S206: The controller obtains the mass change curve of the surface deposits over time based on the mass change value of the surface deposits at different times; wherein, the slope of the curve is the separation rate of the components of the crude oil to be tested, and the change of the separation rate over time reflects the dynamic process of crude oil component separation.

[0070] In this embodiment, obtaining the change in the mass of surface deposits can quantitatively characterize the separation process of the crude oil components being tested. The rate of change of the mass of surface deposits over time reflects the speed of separation of the crude oil components being tested.

[0071] In this embodiment, the controller uses time as the horizontal axis and the mass change value of the surface deposit as the vertical axis to fit the data points of the mass change value of the surface deposit at all different times into a curve of the mass change value of the surface deposit over time.

[0072] In this embodiment, the controller uses a numerical differentiation algorithm, such as the two-point difference method, to calculate the slope of the corresponding point at each moment in the curve of the change in mass of the surface deposit over time.

[0073] refer to Figure 4 , Figure 4 The curve showing the change in mass of the waxy component of the crude oil to be tested over time is provided in an embodiment of this application. Figure 4 As shown, the curves illustrating the change in mass of the waxy components of the crude oil under test over time are presented under two conditions: cooling to 50℃ and 30℃.

[0074] In summary, applying an alternating voltage to a quartz crystal chip via an oscillating circuit excites its piezoelectric effect. The quartz crystal chip utilizes this effect to generate mechanical vibrations under the alternating voltage. The oscillating circuit collects the oscillation frequency signal, thus obtaining a reference oscillation frequency value. This reference oscillation frequency value serves as an unloaded benchmark in a closed container without interference from the crude oil being tested, acting as a reference for subsequent oscillation frequency changes. During the component separation process of the crude oil being tested in the closed container, deposits will form on the surface of the quartz crystal chip. Changes in the mass of these deposits directly affect the oscillation frequency of the quartz crystal chip; even small changes in deposit mass can influence the oscillation frequency, thus demonstrating high sensitivity to thin-layer deposits. By continuously monitoring the oscillation frequency changes at different times and using the reference oscillation frequency value, the mass change of the surface deposits on the quartz crystal chip at different times is calculated. The slope of the curve representing the mass change of the surface deposits over time represents the separation rate of the components of the crude oil being tested. The slope of this curve at different times, i.e., the change in the separation rate over time, reflects the dynamic process of crude oil component separation. This application utilizes the oscillation generated by the piezoelectric effect of a quartz crystal chip and the relationship between the crystal oscillation frequency and the surface deposit quality to convert changes in deposit quality into quantifiable oscillation frequency values, significantly improving the monitoring accuracy of crude oil component separation.

[0075] Optionally, the image sensor acquires images of the surface deposits on the quartz crystal chip at different times; the controller obtains the morphological features of the surface deposits at different times based on the images of the surface deposits; the controller correlates the morphological features of the surface deposits at different times with the mass change values ​​of the surface deposits to obtain the correspondence between the mass change values ​​and morphological features of the surface deposits at different times.

[0076] In this embodiment, monitoring the oscillation frequency of the quartz crystal chip can provide quantitative data on changes in the quality of the deposit, while images can capture the morphological features of the deposit, such as crystal growth direction and particle distribution.

[0077] In this embodiment, correlating the mass change values ​​of surface deposits with morphological characteristics allows for the differentiation of depositional behaviors of different components. For example, wax precipitation typically exhibits regular growth of crystal structures, while asphaltene deposition may show disordered particle accumulation. This enhances the analytical capabilities for separating multiple components in the crude oil under test, providing data support for the study of depositional characteristics of different components.

[0078] Figure 5 This is a schematic diagram of the structure of a monitoring device for crude oil component separation provided in an embodiment of this application. The monitoring device for crude oil component separation includes: a sealed container, a quartz crystal chip, an oscillation circuit, and a controller; a horizontally suspended quartz crystal chip is disposed inside the sealed container; the quartz crystal chip is connected to the oscillation circuit; as shown... Figure 5 As shown, the crude oil component separation monitoring device provided in this embodiment includes: a first acquisition module 501, a first acquisition module 502, a second acquisition module 503, a second acquisition module 504, a calculation module 505, and a third acquisition module 506.

[0079] The first acquisition module 501 is used to apply an alternating voltage to the quartz crystal chip through an oscillation circuit to make the quartz crystal chip vibrate and to acquire the oscillation frequency signal of the quartz crystal chip.

[0080] The first acquisition module 502 is used by the controller to acquire a reference oscillation frequency value based on the oscillation frequency signal; wherein the reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in a sealed container;

[0081] The second acquisition module 503 is used to continuously acquire the oscillation frequency signal of the quartz crystal chip at different times during the component separation process of the crude oil to be tested; wherein, the crude oil to be tested is placed in a sealed container, and the components of the crude oil to be tested are separated by changing the internal environment of the sealed container.

[0082] The second acquisition module 504 is used by the controller to acquire the oscillation frequency change value of the quartz crystal chip at different times based on the oscillation frequency signal at different times.

[0083] The calculation module 505 is used by the controller to calculate the mass change of the surface deposits of the quartz crystal chip at different times based on the oscillation frequency change value and the reference oscillation frequency value at different times; wherein, during the component separation process of the crude oil to be tested, the heavy components in the crude oil to be tested deposit and adsorb onto the surface of the quartz crystal chip.

[0084] The third acquisition module 506 is used by the controller to acquire the change curve of the mass change of the surface deposit over time based on the mass change value of the surface deposit at different times; wherein, the slope of the change curve is the separation rate of the components of the crude oil to be tested, and the change of the separation rate over time reflects the dynamic process of crude oil component separation.

[0085] In one possible implementation, the computing module 505 includes:

[0086]

[0087] in, This represents the change in oscillation frequency at different times. This represents the reference oscillation frequency value, and A represents the contact area of ​​the quartz crystal chip. This indicates the density of the quartz crystal chip. This represents the shear modulus of a quartz crystal chip. This represents the change in mass of the surface deposit at different times, where m represents the mass of the quartz crystal chip.

[0088] In one possible implementation, the monitoring device for crude oil component separation further includes a monitoring module. Specifically, the monitoring module is used by the controller to monitor the oscillation frequency of the quartz crystal chip until it reaches a stable value before proceeding with the component separation process of the crude oil to be tested.

[0089] In one possible implementation, the monitoring device for crude oil component separation further includes a noise reduction module. Specifically, the noise reduction module employs an adaptive filtering algorithm to reduce the noise of the oscillation frequency signal.

[0090] In one possible implementation, the monitoring device for crude oil component separation further includes an image sensor; the monitoring device for crude oil component separation also includes a correlation module. Specifically, the correlation module is used for: the image sensor acquiring images of surface deposits on a quartz crystal chip at different times; the controller obtaining morphological features of the surface deposits at different times based on the images; and the controller correlating the morphological features of the surface deposits at different times with the mass change values ​​of the surface deposits to obtain the correspondence between the mass change values ​​and morphological features of the surface deposits at different times.

[0091] Figure 6 This is a schematic diagram of the structure of a monitoring device for crude oil component separation provided in an embodiment of this application. Figure 6 As shown, the crude oil component separation monitoring device provided in this embodiment includes at least one processor 601 and a memory 602. Optionally, the crude oil component separation monitoring device further includes a communication component 603. The processor 601, memory 602, and communication component 603 are connected via a bus.

[0092] In a specific implementation, at least one processor 601 executes computer execution instructions stored in memory 602, causing at least one processor 601 to perform the above-described method.

[0093] The specific implementation process of processor 601 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0094] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0095] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0096] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0097] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0098] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0099] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0100] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0101] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0102] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0103] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0104] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0105] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0106] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A monitoring method for crude oil component separation, characterized in that, A monitoring device for crude oil component separation, comprising: a sealed container, a quartz crystal chip, an oscillation circuit, and a controller; the quartz crystal chip is horizontally suspended inside the sealed container; the quartz crystal chip is connected to the oscillation circuit; the method includes: An alternating voltage is applied to the quartz crystal chip through the oscillation circuit to cause the quartz crystal chip to vibrate, and the oscillation frequency signal of the quartz crystal chip is collected. The controller obtains a reference oscillation frequency value based on the oscillation frequency signal; wherein the reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in the sealed container; During the component separation process of the crude oil to be tested, the oscillation circuit continuously acquires the oscillation frequency signal of the quartz crystal chip at different times; wherein, the crude oil to be tested is placed in the sealed container, and the components of the crude oil to be tested are separated by changing the internal environment of the sealed container. The controller obtains the oscillation frequency change value of the quartz crystal chip at different times based on the oscillation frequency signal at different times; The controller calculates the mass change of the surface deposits of the quartz crystal chip at different times based on the oscillation frequency change value and the reference oscillation frequency value at different times; wherein, during the component separation process of the crude oil to be tested, the heavy components in the crude oil to be tested deposit and are adsorbed on the surface of the quartz crystal chip. The controller obtains a curve showing the change in mass of the surface deposits over time based on the mass change values ​​of the surface deposits at different times; wherein the slope of the curve represents the separation rate of the components of the crude oil to be tested, and the change in the separation rate over time reflects the dynamic process of crude oil component separation.

2. The method according to claim 1, characterized in that, The controller calculates the mass change of the surface deposit on the quartz crystal chip at different times based on the oscillation frequency change value at different times and the reference oscillation frequency value, including: in, This represents the change in the oscillation frequency at different times. The reference oscillation frequency value is represented by A, and the contact area of ​​the quartz crystal chip is represented by A. This indicates the density of the quartz crystal chip. This represents the shear modulus of the quartz crystal chip. The value represents the change in mass of the surface deposit at different times, and m represents the mass of the quartz crystal chip.

3. The method according to claim 1, characterized in that, Before the component separation of the crude oil to be tested, the method further includes: The controller monitors the oscillation frequency of the quartz crystal chip until it reaches a stable value before proceeding with the component separation process of the crude oil to be tested.

4. The method according to claim 1, characterized in that, The method further includes: An adaptive filtering algorithm is used to reduce noise in the oscillation frequency signal.

5. The method according to claim 1, characterized in that, The monitoring device for crude oil component separation further includes an image sensor; the method further includes: The image sensor acquires images of the surface deposits on the quartz crystal chip at different times; The controller acquires the morphological features of the surface deposits at different times based on the images of the surface deposits; The controller correlates the morphological features of the surface deposits at different times with the mass change values ​​of the surface deposits to obtain the correspondence between the mass change values ​​of the surface deposits and the morphological features at different times.

6. A monitoring device for crude oil component separation, characterized in that, A monitoring device for crude oil component separation, comprising: a sealed container, a quartz crystal chip, an oscillation circuit, and a controller; the quartz crystal chip is horizontally suspended inside the sealed container; the quartz crystal chip is connected to the oscillation circuit; the device includes: The first acquisition module is used to apply an alternating voltage to the quartz crystal chip through the oscillation circuit to make the quartz crystal chip vibrate, and to acquire the oscillation frequency signal of the quartz crystal chip; The first acquisition module is used by the controller to acquire a reference oscillation frequency value based on the oscillation frequency signal; wherein the reference oscillation frequency value is the oscillation frequency value when the crude oil to be tested is not placed in the sealed container; The second acquisition module is used to continuously acquire the oscillation frequency signal of the quartz crystal chip at different times during the component separation process of the crude oil to be tested; wherein, the crude oil to be tested is placed in the sealed container, and the components of the crude oil to be tested are separated by changing the internal environment of the sealed container. The second acquisition module is used by the controller to acquire the oscillation frequency change value of the quartz crystal chip at different times based on the oscillation frequency signal at different times. The calculation module is used by the controller to calculate the mass change of the surface deposits of the quartz crystal chip at different times based on the oscillation frequency change value and the reference oscillation frequency value at different times; wherein, during the component separation process of the crude oil to be tested, the heavy components in the crude oil to be tested deposit and are adsorbed on the surface of the quartz crystal chip. The third acquisition module is used by the controller to acquire the mass change curve of the surface deposit over time based on the mass change value of the surface deposit at different times; wherein the slope of the curve is the separation rate of the components of the crude oil to be tested, and the change of the separation rate over time reflects the dynamic process of crude oil component separation.

7. The apparatus according to claim 6, characterized in that, The calculation module includes: in, This represents the change in the oscillation frequency at different times. The reference oscillation frequency value is represented by A, and the contact area of ​​the quartz crystal chip is represented by A. This indicates the density of the quartz crystal chip. This represents the shear modulus of the quartz crystal chip. The value represents the change in mass of the surface deposit at different times, and m represents the mass of the quartz crystal chip.

8. A monitoring device for crude oil component separation, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the method as described in any one of claims 1-5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-5.

10. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method described in any one of claims 1-5.

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