A fluid analyzer probe and fluid analyzer

Abstract

The application discloses a fluid analyzer probe and a fluid analyzer. The fluid analyzer probe comprises a fluid conduit for receiving mixed fluid to be detected introduced by a flow guide device and discharging the detected mixed fluid into the flow guide device; a strong magnetic device is arranged around the fluid conduit and is used for polarizing hydrogen nuclei in the mixed fluid; a radio frequency antenna is arranged between the fluid conduit and the strong magnetic device, and a plurality of radio frequency antennas are distributed along the circumference of the fluid conduit to form a nuclear magnetic resonance measurement area, the radio frequency antenna is used for emitting a resonance signal to the polarized mixed fluid and receiving a echo signal reflected by the polarized mixed fluid; a first end of each radio frequency antenna is on a first plane, and the first plane is perpendicular to the flow direction of the mixed fluid; and a shielding shell is arranged outside the strong magnetic device. The application reduces test error and makes the acquisition of parameter information of the mixed fluid more accurate.

Description

Technical Field

[0001] This invention relates to the field of fluid analysis technology, and more particularly to a fluid analyzer probe and a fluid analyzer. Background Technology

[0002] Downhole reservoir fluid identification is crucial for the successful development of oil and gas reservoirs. Accurate understanding of reservoir fluid properties aids in oil and gas exploration and development, helps engineers obtain dynamic reservoir information, avoids drilling risks, and ensures drilling quality. The most direct way to understand reservoir fluid properties is to obtain formation fluid parameters, such as lateral relaxation time, vertical relaxation time, free diffusion coefficient, and hydrogen index. These parameters are directly related to fluid viscosity, gas-oil ratio, and other properties. In reservoir fluid property analysis, fluid identification in heavy oil reservoirs is one of the major challenges in well logging interpretation. Nuclear magnetic resonance (NMR) logging can quantitatively evaluate oil and gas layers, playing a vital role in the successful development of oil and gas reservoirs. NMR logging methods can distinguish between bound and mobile fluids in complex downhole fluids, and are therefore widely used for identifying complex reservoir fluids.

[0003] As a key component of nuclear magnetic resonance fluid analyzers for acquiring information on the diffusion of downhole fluids, nuclear magnetic resonance probes are typically equipped with only one radio frequency transmitting antenna and one radio frequency receiving antenna in existing technologies. Designers only consider the mixed fluid as a homogeneous fluid. However, the flow structure of multiphase mixed fluids is complex, and the measurement results obtained by inverting the measurement data from a single profile cannot accurately characterize the multiphase flow composition information. Summary of the Invention

[0004] This invention provides a fluid analyzer probe and a fluid analyzer to make the data obtained by the fluid analyzer probe more comprehensive, reduce testing errors, and make the parameter information of the mixed fluid more accurate.

[0005] According to one aspect of the present invention, a fluid analyzer probe is provided, the fluid analyzer probe comprising:

[0006] Fluid conduit, strong magnetic device, multiple radio frequency antennas, and shielding enclosure;

[0007] The fluid conduit is connected to the drainage device to receive the mixed fluid to be tested introduced by the drainage device and to discharge the tested mixed fluid into the drainage device.

[0008] A strong magnetic device is arranged around the fluid conduit; the strong magnetic device is used to polarize the hydrogen nuclei in the mixed fluid.

[0009] The radio frequency (RF) antenna is positioned between the fluid conduit and the strong magnetic device, and multiple RF antennas are distributed circumferentially along the fluid conduit to form a nuclear magnetic resonance (NMR) measurement area. The RF antennas are used to transmit resonance signals to the polarized mixed fluid and receive echo signals reflected by the polarized mixed fluid. The position of the RF antennas distributed circumferentially along the fluid conduit is related to the uniformity of the component distribution of the mixed fluid to be detected.

[0010] The first end of each radio frequency antenna is on a first plane, which is perpendicular to the flow direction of the mixed fluid;

[0011] The shielding shell is placed outside the strong magnetic device and encloses the strong magnetic device. The shielding shell is used to shield external interference signals.

[0012] Furthermore, multiple radio frequency antennas are uniformly distributed circumferentially along the fluid conduit.

[0013] Furthermore, the first part of the radio frequency antenna is distributed circumferentially along the first half of the fluid conduit, and the second part of the radio frequency antenna is distributed circumferentially along the second half of the fluid conduit, forming the circumference of the fluid conduit.

[0014] The number of RF antennas in the first part is less than the number of RF antennas in the second part.

[0015] Furthermore, the length of the shielding shell is greater than or equal to the length of the strong magnetic device; and the length of the strong magnetic device is greater than or equal to the length of the radio frequency antenna.

[0016] Furthermore, the fluid analyzer probe includes:

[0017] Four radio frequency antennas are evenly distributed along the circumference of the fluid conduit.

[0018] According to another aspect of the present invention, a fluid analyzer is provided, the fluid analyzer comprising:

[0019] The control module, communication module, host computer module, and any of the fluid analyzer probes described in the above embodiments;

[0020] The first end of the control module is connected to the probe of the fluid analyzer. The control module is used to obtain the component distribution uniformity of the mixed fluid, determine the number and position of the radio frequency antennas to be used based on the component distribution uniformity of the mixed fluid, and transmit the first control signal to the radio frequency antennas to be used.

[0021] The radio frequency antenna to be used is used to transmit a resonant signal to the polarized mixed fluid after receiving the first control signal, and to receive the echo signal reflected by the polarized mixed fluid, and transmit the echo signal to the control module.

[0022] The second end of the control module is connected to the first end of the communication module, and the second end of the communication module is connected to the host computer module. The control module is used to transmit the received echo signal to the host computer module through the communication module.

[0023] Furthermore, the control module is also used for:

[0024] The magnetic field strength of the strong magnetic device in the current environment is obtained, and the transmission frequency, receiving frequency and pulse width of the radio frequency antenna for transmitting the resonant signal are determined based on the magnetic field strength. Then, the radio frequency antenna to be used is controlled to transmit the corresponding radio frequency pulse based on the transmission frequency, receiving frequency and pulse width.

[0025] Furthermore, the number of RF antennas in the first part of the fluid analyzer probe is less than the number of RF antennas in the second part;

[0026] The control module is used for:

[0027] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, the number of the first part of the radio frequency antennas that are turned on is the same as the number of the second part of the radio frequency antennas that are turned on.

[0028] When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, the number of times the second part of the radio frequency antenna is turned on is greater than the number of times the first part of the radio frequency antenna is turned on.

[0029] Furthermore, the fluid analyzer probe includes four radio frequency antennas, which are evenly distributed along the circumference of the fluid conduit.

[0030] The control module is used for:

[0031] Obtain the accuracy testing requirements for the fluid analyzer;

[0032] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, then control one radio frequency antenna to turn on and work.

[0033] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, then control the two radio frequency antennas to turn on and work.

[0034] When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, then control the three radio frequency antennas to turn on and work.

[0035] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, then control the four radio frequency antennas to turn on and operate.

[0036] Furthermore, the fluid analyzer also includes:

[0037] Storage module;

[0038] The storage module is connected to the third terminal of the control module;

[0039] The control module is used to transmit the echo signal to the storage module for storage after receiving the echo signal.

[0040] The fluid analyzer probe of this invention includes a fluid conduit, a strong magnetic device, multiple radio frequency antennas, and a shielding shell. The fluid conduit is connected to a drainage device. The strong magnetic device is arranged around the fluid conduit. The radio frequency antennas are positioned between the fluid conduit and the strong magnetic device, and the multiple radio frequency antennas are distributed circumferentially along the fluid conduit to form a nuclear magnetic resonance measurement area. The first end of each radio frequency antenna is on a first plane, which is perpendicular to the flow direction of the mixed fluid. The shielding shell is located outside the strong magnetic device and encloses it. The fluid conduit receives the mixed fluid to be detected introduced by the drainage device. The strong magnetic device polarizes the hydrogen nuclei in the mixed fluid, and the multiple radio frequency antennas are directed towards the polarized mixed fluid. The system transmits a resonant signal and receives the echo signal reflected by the polarized mixed fluid. The detected mixed fluid is then discharged into a drainage device through a fluid conduit, enabling the fluid analyzer probe to detect the mixed fluid. Compared to existing technologies that only have one RF transmitting antenna and one RF receiving antenna and treat the mixed fluid as a homogeneous fluid, this invention provides multiple RF antennas. The positions of the RF antennas along the circumferential direction of the fluid conduit are related to the uniformity of the component distribution of the mixed fluid to be detected. This treats the mixed fluid as a multiphase flow, making the data measured by the fluid analyzer probe more comprehensive, reducing test errors, and making the acquisition of parameter information of the mixed fluid more accurate.

[0041] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of a fluid analyzer probe according to an embodiment of the present invention;

[0044] Figure 2This is a schematic diagram of the vertical cross-section of a fluid analyzer probe according to an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the vertical cross-section of another fluid analyzer probe provided according to an embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of a fluid analyzer according to an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of another fluid analyzer provided according to an embodiment of the present invention. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] This invention provides a fluid analyzer probe. Figure 1 This is a schematic diagram of the structure of a fluid analyzer probe according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the vertical cross-section of a fluid analyzer probe according to an embodiment of the present invention. (Refer to...) Figure 1 and Figure 2 The fluid analyzer probe includes:

[0051] 1. Fluid conduit; 2. Strong magnetic device; 3. Multiple radio frequency antennas; 4. Shielding shell;

[0052] The fluid conduit 1 is connected to the drainage device to receive the mixed fluid to be tested introduced by the drainage device and to discharge the tested mixed fluid into the drainage device.

[0053] A strong magnetic device 2 is arranged around the fluid conduit 1, and the strong magnetic device 2 is used to polarize the hydrogen nuclei in the mixed fluid;

[0054] The radio frequency antenna 3 is disposed between the fluid conduit 1 and the strong magnetic device 2, and multiple radio frequency antennas 3 are distributed circumferentially along the fluid conduit 1 to form a nuclear magnetic resonance measurement area n. The radio frequency antennas 3 are used to transmit resonance signals to the polarized mixed fluid and receive echo signals reflected by the polarized mixed fluid. The position of the radio frequency antennas 3 distributed circumferentially along the fluid conduit 1 is related to the uniformity of the component distribution of the mixed fluid to be detected.

[0055] The first end of each radio frequency antenna is on a first plane m, which is perpendicular to the flow direction v of the mixed fluid;

[0056] The shielding shell 4 is located outside the strong magnetic device 2 and covers the strong magnetic device 2. The shielding shell 4 is used to shield external interference signals.

[0057] Specifically, during the measurement process of the fluid analyzer probe, the mixed fluid to be detected is introduced into the fluid conduit 1 through a drainage device, causing the mixed fluid to move along the flow direction v. After entering the polarization region r surrounded by a strong magnetic device 2, the strong magnetic device 2 polarizes the hydrogen nuclei in the mixed fluid. The strong magnetic device 2 can be a ring-shaped permanent magnet, and the material of the permanent magnet can be samarium cobalt with a high Curie temperature and a low temperature coefficient. For example, the strong magnetic device 2 can be a ring magnet formed by bonding multiple fan-shaped magnets. At this time, multiple radio frequency antennas 3 distributed circumferentially along the fluid conduit 1 can transmit resonant signals to the polarized mixed fluid inside the fluid conduit 1, and the radio frequency antennas transmitting this resonant signal can receive the echo signals reflected by the polarized mixed fluid. The detected mixed fluid is then discharged into the drainage device through the fluid conduit 1. The number of radio frequency antennas 3 can be set according to the actual measurement accuracy. If higher accuracy is required, more radio frequency antennas can be set; if lower accuracy is required, fewer radio frequency antennas can be set. For example, ... Figure 1 and Figure 2As shown, four radio frequency antennas 3 can be evenly distributed around the fluid conduit 1, namely the first radio frequency antenna 3a, the second radio frequency antenna 3b, the third radio frequency antenna 3c, and the fourth radio frequency antenna 3d. At this time, the included angle between any two adjacent radio frequency antennas is 90°. The four radio frequency antennas 3 can be solenoid structure antennas with integrated transceiver. The materials, lengths, winding intervals, etc. of the radio frequency antennas 3 are all the same. The fluid analyzer probe designed in this embodiment of the invention uses electromagnetic coupling to measure the resonance signal. It only responds to signals within a certain bandwidth of the Larmor precession frequency of the stratum to be measured, thereby enabling the solenoid structure antenna to accurately capture the echo signal reflected by the polarized mixed fluid.

[0058] The position of the radio frequency antenna 3 distributed along the circumference of the fluid conduit 1 is related to the uniformity of the component distribution of the mixed fluid to be detected. For example, it can be understood that if the uniformity of the component distribution of the mixed fluid to be detected is high, fewer radio frequency antennas can be set, or each radio frequency antenna 3 can be uniformly set along the circumference of the fluid conduit 1; if the uniformity of the component distribution of the mixed fluid to be detected is low, more radio frequency antennas can be set, and each radio frequency antenna 3 can be non-uniformly set along the circumference of the fluid conduit 1.

[0059] The fluid analyzer probe of this invention includes a fluid conduit 1, a strong magnetic device 2, multiple radio frequency antennas 3, and a shielding shell 4. The fluid conduit 1 is connected to a drainage device. The strong magnetic device 2 is arranged around the fluid conduit 1. The radio frequency antennas 3 are arranged between the fluid conduit 1 and the strong magnetic device 2, and the multiple radio frequency antennas 3 are distributed circumferentially along the fluid conduit 1 to form a nuclear magnetic resonance measurement area n. The first end of each radio frequency antenna is on a first plane m, which is perpendicular to the flow direction v of the mixed fluid. The shielding shell 4 is arranged outside the strong magnetic device 2 and encloses the strong magnetic device 2. The fluid conduit 1 receives the mixed fluid to be detected introduced by the drainage device. The strong magnetic device 2 polarizes the hydrogen nuclei in the mixed fluid. The multiple radio frequency antennas 3 emit resonance signals into the polarized mixed fluid and receive the echo signals reflected by the polarized mixed fluid. The nuclear magnetic resonance echo train signal is detected by the fluid conduit 1, which drains the mixed fluid into the drainage device. This allows the fluid analyzer probe to detect the mixed fluid. Compared to the prior art, which only sets one radio frequency transmitting antenna and one radio frequency receiving antenna and treats the mixed fluid as a homogeneous fluid, this embodiment of the invention sets multiple radio frequency antennas 3. The positions of the radio frequency antennas 3 distributed around the fluid conduit 1 are related to the uniformity of the component distribution of the mixed fluid to be detected. The mixed fluid is regarded as a multiphase flow mixed fluid. By combining multiple radio frequency antennas 3 to simultaneously measure the nuclear magnetic resonance echo train signal reflected by the mixed fluid, the negative impact of non-uniform flow structure fluid on the measurement effect can be effectively avoided. This makes the data tested by the fluid analyzer probe more comprehensive, reduces the test error, and makes the parameter information of the mixed fluid more accurate.

[0060] Further references are available. Figure 1 and Figure 2 Multiple radio frequency antennas 3 are evenly distributed circumferentially along the fluid conduit 1.

[0061] Specifically, the components of the fluid mixture to be tested are evenly distributed, so that the fluid mixture to be tested is evenly distributed around the fluid conduit 1. Multiple radio frequency antennas 3 are evenly distributed around the fluid conduit 1, which can ensure that the radio frequency antennas 3 can uniformly measure the fluid mixture data in each direction. The test data is more comprehensive, and the parameter information of the fluid mixture is more accurately obtained.

[0062] Furthermore, Figure 3 This is a schematic diagram of the vertical cross-section of another fluid analyzer probe according to an embodiment of the present invention, for reference. Figure 3 The first part of the radio frequency antenna 31 is distributed circumferentially along the first half-circumference p of the fluid conduit 1, and the second part of the radio frequency antenna 32 is distributed circumferentially along the second half-circumference q of the fluid conduit 1. The first half-circumference p and the second half-circumference q form the circumference of the fluid conduit 1.

[0063] The number of the first part of the radio frequency antennas 31 is less than the number of the second part of the radio frequency antennas 32.

[0064] Specifically, due to the varying densities of the mixed fluids within the fluid conduit 1, the lower-density components are distributed in the first half-circle p, while the higher-density components are distributed in the second half-circle q. Furthermore, the mixed fluid to be detected is less concentrated in the first half-circle p and more concentrated in the second half-circle q. For example, the mixed fluid in the first half-circle p may contain only gas, while the mixed fluid in the second half-circle q may contain a mixture of gas and various other fluids. Therefore, by setting fewer first-part radio frequency antennas 31 in the first half-circle p than in the second-part radio frequency antennas 32 in the second half-circle q, more data from the second half-circle q can be measured specifically, resulting in more comprehensive data from the fluid analyzer probe and more accurate acquisition of the mixed fluid's parameter information.

[0065] Further reference Figure 1 The length of the shielding shell 4 is greater than or equal to the length of the strong magnetic device 2; and the length of the strong magnetic device 2 is greater than or equal to the length of the radio frequency antenna 3.

[0066] Specifically, setting the length of the shielding shell 4 to be greater than or equal to the length of the strong magnetic device 2 ensures that the strong magnetic device 2 will not be interfered with by external signals during the polarization of hydrogen nuclei in the mixed fluid; while the length of the strong magnetic device 2 to be greater than or equal to the length of the radio frequency antenna 3 ensures that the radio frequency antenna 3 can transmit resonant signals to the polarized mixed fluid and receive the echo signals reflected by the polarized mixed fluid, thus accurately realizing the detection of the mixed fluid.

[0067] Furthermore, the fluid analyzer probe includes:

[0068] Four radio frequency antennas are evenly distributed along the circumference of the fluid conduit.

[0069] Specifically, four radio frequency antennas are installed inside the fluid analyzer probe, and the four radio frequency antennas are evenly distributed along the circumference of the fluid conduit. This can save the cost of installing more radio frequency antennas while ensuring that test data in all directions inside the fluid conduit can be obtained.

[0070] This invention provides a fluid analyzer. Figure 4 This is a schematic diagram of a fluid analyzer according to an embodiment of the present invention, with reference to... Figure 4 The fluid analyzer includes:

[0071] Control module 20, communication module 30, host computer module 40, and fluid analyzer probe 10 as described in any of the above embodiments;

[0072] The first end of the control module 20 is connected to the fluid analyzer probe 10. The control module 20 is used to obtain the component distribution uniformity of the mixed fluid, determine the number and position of the radio frequency antennas to be used based on the component distribution uniformity of the mixed fluid, and transmit the first control signal to the radio frequency antennas to be used.

[0073] The radio frequency antenna to be used is used to transmit a resonant signal to the polarized mixed fluid after receiving the first control signal, and to receive the echo signal reflected by the polarized mixed fluid, and transmit the echo signal to the control module 20.

[0074] The second end of the control module 20 is connected to the first end of the communication module 30, and the second end of the communication module 30 is connected to the host computer module 40. The control module 20 is used to transmit the received echo signal to the host computer module 40 through the communication module 30.

[0075] Specifically, the uniformity of the composition distribution of the current environmental mixed fluid can be input to the control module 20 by on-site personnel, or the uniformity of the composition distribution of the current environmental mixed fluid can be transmitted to the control module 20 after the composition measuring instrument measures it. This embodiment of the invention does not limit this. After receiving the uniformity of the composition distribution of the current environmental mixed fluid, the control module 20 determines the number and position of the radio frequency antennas to be used based on the uniformity of the composition distribution of the mixed fluid. For example, if the number of the first part of the radio frequency antennas in the fluid analyzer probe 10 is less than the number of the second part of the radio frequency antennas, then when the uniformity of the composition distribution of the mixed fluid is less than or equal to the first uniformity, the control module 20 controls the number of the first part of the radio frequency antennas to be turned on to be the same as the number of the second part of the radio frequency antennas to be turned on; when the uniformity of the composition distribution of the mixed fluid is greater than the first uniformity, the control module 20 controls the number of the second part of the radio frequency antennas to be turned on to be greater than the number of the first part of the radio frequency antennas to be turned on. If the fluid analyzer probe 10 includes four radio frequency antennas, and the four radio frequency antennas are uniformly distributed along the circumference of the fluid conduit, the control module 20 will determine the accuracy detection requirements of the fluid analyzer. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, one radio frequency antenna will be controlled to turn on. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, two radio frequency antennas will be controlled to turn on. When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, three radio frequency antennas will be controlled to turn on. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, four radio frequency antennas will be controlled to turn on.

[0076] After determining the number and location of the radio frequency antennas to be used, the control module 2 transmits a first control signal to the radio frequency antennas to be used. After receiving the first control signal, the radio frequency antennas to be used transmit a resonant signal to the polarized mixed fluid and receive the echo signal reflected by the polarized mixed fluid. The echo signal is then transmitted to the control module 20. After receiving the echo signal, the control module 20 transmits it to the host computer module 40 through the communication module 30, so that the echo signal can be transmitted to the host computer module 40 in a timely manner for data analysis. This allows the control module to obtain data such as the longitudinal relaxation time, transverse relaxation time, free diffusion coefficient, and hydrogen content index of the mixed fluid. Based on these data, the control module 2 analyzes the mixed fluid in the current environment.

[0077] The fluid analyzer designed in this embodiment of the invention includes a control module 20, a communication module 30, a host computer module 40, and a fluid analyzer probe 10 as described in any of the above embodiments. The first end of the control module 20 is connected to the fluid analyzer probe 10, the second end of the control module 20 is connected to the first end of the communication module 30, and the second end of the communication module 30 is connected to the host computer module 40. This allows the control module 20 to, after acquiring the component distribution uniformity of the mixed fluid, determine the number and position of the radio frequency antennas to be used based on the component distribution uniformity, and transmit a first control signal to the radio frequency antennas to be used. Upon receiving the first control signal, the radio frequency antennas to be used transmit a resonant signal to the polarized mixed fluid and receive a signal from the polarized... The system receives the echo signal reflected by the mixed fluid and transmits it to the control module 20, thereby realizing the data detection of the mixed fluid. After receiving the echo signal, the control module 20 transmits it to the host computer module 40 through the communication module 30, so that the echo signal can be transmitted to the host computer module 40 in a timely manner for data analysis. Compared with the prior art, which only sets one radio frequency transmitting antenna and one radio frequency receiving antenna and only regards the mixed fluid as a uniform fluid, the fluid analyzer set in this embodiment of the invention is equipped with multiple radio frequency antennas. It can determine the number and position of radio frequency antennas to be used according to the uniformity of the component distribution of the mixed fluid. Under the condition of ensuring more accurate acquisition of parameter information of the mixed fluid, it can further reduce energy consumption.

[0078] Furthermore, the control module is also used for:

[0079] The magnetic field strength of the strong magnetic device in the current environment is obtained, and the transmission frequency, receiving frequency and pulse width of the radio frequency antenna for transmitting the resonant signal are determined based on the magnetic field strength. Then, the radio frequency antenna to be used is controlled to transmit the corresponding radio frequency pulse based on the transmission frequency, receiving frequency and pulse width.

[0080] Specifically, the radio frequency field generated by the radio frequency antenna and the static magnetic field generated by the strong magnetic device can be orthogonally matched. Based on the magnetic field strength of the static magnetic field in the stratum to be tested, the operating frequency of the radio frequency antenna, namely the transmission frequency, reception frequency and pulse width of the radio frequency antenna, can be calculated. The operating frequency of the radio frequency antenna can be adjusted according to the transmission frequency, reception frequency and pulse width. For example, the operating frequency of the radio frequency antenna can be adjusted by burying a capacitor tuning module under the radio frequency antenna, and the radio frequency antenna to be used can be controlled to transmit the corresponding radio frequency pulse according to the adjusted operating frequency of the radio frequency antenna.

[0081] Furthermore, the number of RF antennas in the first part of the fluid analyzer probe is less than the number of RF antennas in the second part;

[0082] The control module is used for:

[0083] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, the number of the first part of the radio frequency antennas that are turned on is the same as the number of the second part of the radio frequency antennas that are turned on.

[0084] When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, the number of times the second part of the radio frequency antenna is turned on is greater than the number of times the first part of the radio frequency antenna is turned on.

[0085] The first uniformity can be set according to the actual situation, and the embodiments of the present invention do not impose any restrictions on it.

[0086] Specifically, if the number of first-part RF antennas in the fluid analyzer probe is less than the number of second-part RF antennas, and the uniformity of the mixed fluid's composition distribution is less than or equal to the first uniformity, it indicates that the current mixed fluid's composition distribution is relatively uniform. The difference between the uniformity of the mixed fluid's composition distribution in the first half-cycle and the second half-cycle in the fluid analyzer probe is not significant. In this case, the number of first-part RF antennas turned on can be the same as the number of second-part RF antennas turned on. If the uniformity of the mixed fluid's composition distribution is greater than the first uniformity, it indicates that the current mixed fluid's composition distribution is not uniform. The difference between the uniformity of the mixed fluid's composition distribution in the first half-cycle and the second half-cycle in the fluid analyzer probe is significant. In this case, the number of second-part RF antennas turned on needs to be greater than the number of first-part RF antennas turned on.

[0087] Furthermore, the fluid analyzer probe includes four radio frequency antennas, which are evenly distributed along the circumference of the fluid conduit.

[0088] The control module is used for:

[0089] Obtain the accuracy testing requirements for the fluid analyzer;

[0090] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, then control one radio frequency antenna to turn on and work.

[0091] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, then control the two radio frequency antennas to turn on and work.

[0092] When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, then control the three radio frequency antennas to turn on and work.

[0093] When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, then control the four radio frequency antennas to turn on and operate.

[0094] The first uniformity and the first accuracy detection requirements can be set according to the actual situation, and the embodiments of the present invention do not impose any restrictions on them.

[0095] Specifically, if the fluid analyzer probe includes four radio frequency antennas, and the four radio frequency antennas are evenly distributed along the circumference of the fluid conduit, the control module can first obtain the accuracy detection requirements of the fluid analyzer. For example, the accuracy detection requirements can be manually entered by the on-site operator when the fluid analyzer is turned on. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, it indicates that the component distribution of the current mixed fluid is relatively uniform, and the detection requirements for the mixed fluid are low. In this case, controlling one RF antenna to operate is sufficient. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, it indicates that the component distribution of the current mixed fluid is relatively uniform, but the detection requirements for the mixed fluid are high. In this case, controlling two RF antennas to operate is sufficient. For example, since the component distribution of the current mixed fluid is relatively uniform, any two RF antennas can be selected to operate. When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, it indicates that the component distribution of the current mixed fluid is not uniform, but the detection requirements for the mixed fluid are low. In this case, controlling three RF antennas to operate is sufficient. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, it indicates that the component distribution of the current mixed fluid is not uniform, and the detection requirements for the mixed fluid are high. In this case, controlling all four RF antennas to operate is necessary to meet the testing requirements.

[0096] Furthermore, Figure 5 This is a schematic diagram of another fluid analyzer provided according to an embodiment of the present invention, with reference to... Figure 5 The fluid analyzer also includes:

[0097] Storage module 50;

[0098] The storage module 50 is connected to the third terminal of the control module 20;

[0099] The control module 20 is used to transmit the echo signal to the storage module 50 for storage after receiving the echo signal.

[0100] Specifically, a storage module 50 is installed in the fluid analyzer so that after the control module 20 receives the echo signal, it transmits the echo signal to the storage module 50 for storage, which can realize the backup of the echo signal. If an abnormality occurs during the data analysis process of the host computer module 40, the echo signal stored in the storage module 50 can be compared with the echo signal transmitted to the host computer module 40 to determine whether the communication module 30 is abnormal.

[0101] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0102] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A fluid analyzer probe, characterized in that, include: Fluid conduit, strong magnetic device, multiple radio frequency antennas, and shielding enclosure; The fluid conduit is connected to the drainage device for receiving the mixed fluid to be detected introduced by the drainage device and discharging the detected mixed fluid into the drainage device. The strong magnetic device is arranged around the fluid conduit, and the strong magnetic device is used to polarize the hydrogen nuclei in the mixed fluid; The radio frequency antenna is disposed between the fluid conduit and the strong magnetic device, and multiple radio frequency antennas are distributed circumferentially along the fluid conduit to form a nuclear magnetic resonance measurement area. The radio frequency antenna is used to transmit resonance signals to the polarized mixed fluid and receive echo signals reflected by the polarized mixed fluid. The position of the radio frequency antenna distributed circumferentially along the fluid conduit is related to the uniformity of the component distribution of the mixed fluid to be detected. The first end of each of the radio frequency antennas is on a first plane, which is perpendicular to the flow direction of the mixed fluid; The shielding shell is disposed on the outside of the strong magnetic device and encloses the strong magnetic device. The shielding shell is used to shield external interference signals.

2. The fluid analyzer probe according to claim 1, characterized in that, The multiple radio frequency antennas are evenly distributed circumferentially along the fluid conduit.

3. The fluid analyzer probe according to claim 1, characterized in that, The first part of the radio frequency antenna is distributed circumferentially along the first half of the fluid conduit, and the second part of the radio frequency antenna is distributed circumferentially along the second half of the fluid conduit, with the first half and the second half forming the circumference of the fluid conduit. The number of radio frequency antennas described in Part 1 is less than the number of radio frequency antennas described in Part 2.

4. The fluid analyzer probe according to claim 1, characterized in that, The length of the shielding shell is greater than or equal to the length of the strong magnetic device; and the length of the strong magnetic device is greater than or equal to the length of the radio frequency antenna.

5. The fluid analyzer probe according to claim 2, characterized in that, include: Four radio frequency antennas are evenly distributed along the circumference of the fluid conduit.

6. A fluid analyzer, characterized in that, include: The system comprises a control module, a communication module, a host computer module, and the fluid analyzer probe as described in any one of claims 1-4; The first end of the control module is connected to the probe of the fluid analyzer. The control module is used to obtain the component distribution uniformity of the mixed fluid, determine the number and position of the radio frequency antennas to be used based on the component distribution uniformity of the mixed fluid, and transmit a first control signal to the radio frequency antennas to be used. The radio frequency antenna to be used is used to transmit a resonant signal to the polarized mixed fluid after receiving the first control signal, and to receive the echo signal reflected by the polarized mixed fluid, and to transmit the echo signal to the control module. The second end of the control module is connected to the first end of the communication module, and the second end of the communication module is connected to the host computer module. The control module is used to transmit the received echo signal to the host computer module through the communication module.

7. The fluid analyzer according to claim 6, characterized in that, The control module is also used for: The magnetic field strength of the strong magnetic device under the current environment is obtained, and the transmission frequency, receiving frequency and pulse width of the radio frequency antenna for transmitting the resonant signal are determined based on the magnetic field strength. Then, the radio frequency antenna to be used is controlled to transmit the corresponding radio frequency pulse based on the transmission frequency, the receiving frequency and the pulse width.

8. The fluid analyzer according to claim 6, characterized in that, The number of radio frequency antennas in the first part of the fluid analyzer probe is less than the number of radio frequency antennas in the second part. The control module is used for: When the component distribution uniformity of the mixed fluid is less than or equal to the first uniformity, the number of radio frequency antennas opened in the first part is controlled to be the same as the number of radio frequency antennas opened in the second part. When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, the number of radio frequency antennas opened in the second part is controlled to be greater than the number of radio frequency antennas opened in the first part.

9. The fluid analyzer according to claim 6, characterized in that, The fluid analyzer probe includes four radio frequency antennas, and the four radio frequency antennas are evenly distributed along the circumference of the fluid conduit. The control module is used for: Obtain the accuracy testing requirements of the fluid analyzer; When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, then control one of the radio frequency antennas to turn on and operate. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, then the two radio frequency antennas are controlled to turn on and operate. When the uniformity of the component distribution of the mixed fluid is greater than the first uniformity, if the accuracy detection requirement is less than or equal to the first accuracy detection requirement, then control the three radio frequency antennas to turn on and operate. When the uniformity of the component distribution of the mixed fluid is less than or equal to the first uniformity, if the accuracy detection requirement is greater than the first accuracy detection requirement, then the four radio frequency antennas are controlled to turn on and operate.

10. The fluid analyzer according to claim 6, characterized in that, Also includes: Storage module; The storage module is connected to the third terminal of the control module; The control module is used to transmit the echo signal to the storage module for storage after receiving the echo signal.

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