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 fluid drainage module and discharging the detected mixed fluid into the fluid drainage module; a permanent magnet for polarizing hydrogen nuclei in the mixed fluid flowing into the fluid conduit; at least one transmitting signal radio frequency antenna and at least one receiving signal radio frequency antenna arranged between the fluid conduit and the permanent magnet, the at least one transmitting signal radio frequency antenna and the at least one receiving signal radio frequency antenna being arranged at intervals along the flow direction of the mixed fluid, the transmitting signal radio frequency antenna being used for transmitting resonance signals to the polarized mixed fluid, and the receiving signal radio frequency antenna being used for receiving echo signals reflected by the polarized mixed fluid; and a shielding shell arranged outside the permanent magnet and used for shielding external interference signals. The application reduces the test error of the fluid analyzer probe and makes the 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 currently used in nuclear magnetic resonance fluid analyzers, which typically only have one radio frequency transmitting antenna and one radio frequency receiving antenna, resulting in inaccurate test data acquisition. Summary of the Invention

[0004] This invention provides a fluid analyzer probe and a fluid analyzer to effectively avoid inaccurate measurement results caused by excessively high flow rates of mixed fluids, reduce the testing error of the fluid analyzer probe, and make the acquisition of parameter information of mixed fluids 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, permanent magnet, multiple radio frequency antenna arrays, and shielding housing;

[0007] The radio frequency antenna group includes at least one radio frequency antenna for transmitting signals and at least one radio frequency antenna for receiving signals;

[0008] The fluid conduit is connected to the fluid drainage module to receive the mixed fluid to be tested introduced by the fluid drainage module and to discharge the tested mixed fluid into the fluid drainage module.

[0009] A permanent magnet is arranged around the fluid conduit, and the permanent magnet is used to polarize the hydrogen nuclei in the mixed fluid flowing into the fluid conduit;

[0010] At least one transmitting signal radio frequency antenna and at least one receiving signal radio frequency antenna are disposed between the fluid conduit and the permanent magnet. The transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are spaced apart along the flow direction of the mixed fluid. The transmitting signal radio frequency antenna is used to transmit a resonant signal to the polarized mixed fluid, and the receiving signal radio frequency antenna is used to receive the echo signal reflected by the polarized mixed fluid. The positions of the at least one transmitting signal radio frequency antenna and the at least one receiving signal radio frequency antenna distributed along the axial direction of the fluid conduit are related to the flow velocity of the mixed fluid to be detected.

[0011] The shielding shell is located outside the permanent magnet and encloses the permanent magnet. The shielding shell is used to shield external interference signals.

[0012] Furthermore, the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other at equal intervals in the flow direction of the mixed fluid.

[0013] Furthermore, the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other along the flow direction of the mixed fluid;

[0014] Alternatively, the radio frequency antenna group includes at least two radio frequency antennas for transmitting signals and at least two radio frequency antennas for receiving signals;

[0015] Along the flow direction of the mixed fluid, at least two transmitting signal radio frequency antennas are arranged continuously at equal intervals, and at least two receiving signal radio frequency antennas are arranged continuously at equal intervals.

[0016] Furthermore, the radio frequency antenna assembly includes a transmitting signal radio frequency antenna and multiple receiving signal radio frequency antennas;

[0017] Multiple radio frequency antennas for receiving signals are arranged sequentially along the flow direction of the mixed fluid.

[0018] Furthermore, the length of the shielding shell is greater than or equal to the length of the permanent magnet; and the length of the permanent magnet is greater than or equal to the sum of the lengths of the multiple radio frequency antennas.

[0019] According to another aspect of the present invention, a fluid analyzer is provided, the fluid analyzer comprising:

[0020] The control module, communication module, host computer module, and any of the fluid analyzer probes described in the above embodiments;

[0021] The first end of the control module is connected to the probe of the fluid analyzer. The control module is used to obtain the flow rate value and accuracy detection requirements of the mixed fluid, and to determine the number and position of the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna according to the flow rate value and accuracy detection requirements, and to transmit the first control signal to the transmitting signal radio frequency antenna.

[0022] The transmitting radio frequency antenna is used to transmit a resonant signal into the polarized mixed fluid after receiving the first control signal;

[0023] The receiving radio frequency antenna is used to receive the echo signal reflected by the polarized mixed fluid and transmit the echo signal to the control module;

[0024] 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.

[0025] Furthermore, the fluid analyzer probe includes two radio frequency antenna groups, and the radio frequency antenna groups include four radio frequency antennas;

[0026] The control module is used for:

[0027] When the accuracy detection requirement is the highest accuracy detection requirement, control one radio frequency antenna group to turn on and operate.

[0028] When the accuracy requirement is the second accuracy requirement, the two radio frequency antenna groups are controlled to turn on and operate. The accuracy of the second accuracy requirement is higher than that of the first accuracy requirement.

[0029] Furthermore, the radio frequency antenna group includes a first transmit signal radio frequency antenna, a second transmit signal radio frequency antenna, a third receive signal radio frequency antenna, and a fourth receive signal radio frequency antenna;

[0030] The control module is used for:

[0031] When the first transmitting signal radio frequency antenna and the second transmitting signal radio frequency antenna are set at equal intervals, and the third receiving signal radio frequency antenna and the fourth receiving signal radio frequency antenna are set at equal intervals;

[0032] If the flow rate is less than or equal to the first preset value, the control will turn on the adjacent second transmitting signal radio frequency antenna and third receiving signal radio frequency antenna.

[0033] If the flow rate is greater than the first preset value and less than or equal to the second preset value, then control the first transmitting signal RF antenna and the third receiving signal RF antenna, which are spaced one RF antenna apart, to be turned on and / or control the second transmitting signal RF antenna and the fourth receiving signal RF antenna, which are spaced one RF antenna apart, to be turned on and operated.

[0034] If the flow rate is greater than the second preset value, the first transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are set at intervals of two radio frequency antennas, will be turned on and put into operation.

[0035] When the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other at equal intervals in the flow direction of the mixed fluid;

[0036] If the flow rate is less than or equal to the first preset value, the first transmitting signal RF antenna and the third receiving signal RF antenna, which are set up adjacent to each other, will be turned on and operated, and / or the second transmitting signal RF antenna and the fourth receiving signal RF antenna, which are set up adjacent to each other, will be turned on and operated.

[0037] If the flow rate is greater than the first preset value, the first transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are set at a distance of two radio frequency antennas, will be turned on and put into operation.

[0038] Furthermore, the radio frequency antenna assembly includes one transmit signal radio frequency antenna and three receive signal radio frequency antennas;

[0039] The control module is used for:

[0040] If the flow rate is less than or equal to the first preset value, the control will turn on the adjacent transmitting signal radio frequency antenna and receiving signal radio frequency antenna.

[0041] If the flow rate is greater than the first preset value and less than or equal to the second preset value, the control will turn on the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna, which are set at a distance of one receiving signal radio frequency antenna.

[0042] If the flow rate is greater than the second preset value, the control will turn on the radio frequency antenna for transmitting the signal and the radio frequency antenna for receiving the signal, which are set at intervals of two receiving signal radio frequency antennas.

[0043] Furthermore, the control module is also used for:

[0044] The first distance from the first end of the permanent magnet to the first end of each radio frequency antenna is obtained, and the first time when the mixed fluid flows through each radio frequency antenna is determined based on the first distance and the flow velocity value. The first time is then transmitted to the host computer module through the communication module.

[0045] The fluid analyzer probe designed in this embodiment of the invention includes a fluid conduit, a permanent magnet, multiple radio frequency antenna groups, and a shielding shell. The radio frequency antenna groups include at least one transmitting signal radio frequency antenna and at least one receiving signal radio frequency antenna. The fluid conduit is connected to a fluid drainage module. The permanent magnet is arranged around the fluid conduit. At least one transmitting signal radio frequency antenna and at least one receiving signal radio frequency antenna are positioned between the fluid conduit and the permanent magnet, spaced apart along the flow direction of the mixed fluid. The shielding shell is located outside the permanent magnet and encloses it. The fluid conduit receives the mixed fluid to be detected introduced by the fluid drainage module. The permanent magnet polarizes the hydrogen nuclei in the mixed fluid flowing into the fluid conduit. The transmitting signal radio frequency antenna emits a resonance signal into the polarized mixed fluid, and the receiving signal radio frequency antenna receives the resonant signal from the polarized mixed fluid. The emitted echo signal, i.e., the nuclear magnetic resonance echo train signal, is used to detect the mixed fluid. After detection, the mixed fluid is discharged into the fluid drainage module through a fluid conduit, thereby enabling the fluid analyzer probe to detect the mixed fluid. Compared with the prior art, which only sets one radio frequency transmitting antenna and one radio frequency receiving antenna and does not consider the influence of the mixed fluid flow rate on the detection, this embodiment of the invention sets up multiple radio frequency antenna groups, and each radio frequency antenna group includes at least one transmitting signal radio frequency antenna and at least one receiving signal radio frequency antenna. It considers the influence of the mixed fluid flow rate on the measurement of the mixed fluid. By changing the distance between the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna, the receiving signal radio frequency antenna can receive the complete echo signal. This can effectively avoid the phenomenon of inaccurate measurement results caused by the mixed fluid flow rate being too fast, reduce the test error of the fluid analyzer probe, and make the acquisition of mixed fluid parameter information more accurate.

[0046] 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

[0047] 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.

[0048] Figure 1 This is a schematic diagram of the structure of a fluid analyzer probe according to an embodiment of the present invention;

[0049] 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;

[0050] Figure 3 This is a schematic diagram of another fluid analyzer probe provided according to an embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of the structure of another fluid analyzer probe provided according to an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the structure of a fluid analyzer provided according to an embodiment of the present invention. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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:

[0056] Fluid conduit 1, permanent magnet 2, multiple radio frequency antenna groups 3, and shielding housing 4;

[0057] The radio frequency antenna group 3 includes at least one radio frequency antenna 31 for transmitting signals and at least one radio frequency antenna 32 for receiving signals;

[0058] The fluid conduit 1 is connected to the fluid drainage module and is used to receive the mixed fluid to be tested introduced by the fluid drainage module and discharge the tested mixed fluid into the fluid drainage module;

[0059] A permanent magnet 2 is arranged around the fluid conduit 1, and the permanent magnet 2 is used to polarize the hydrogen nuclei in the mixed fluid flowing into the fluid conduit 1;

[0060] At least one transmitting signal radio frequency antenna 31 and at least one receiving signal radio frequency antenna 32 are disposed between the fluid conduit 1 and the permanent magnet 2. The transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 are spaced apart along the flow direction v of the mixed fluid. The transmitting signal radio frequency antenna 31 is used to transmit a resonant signal to the polarized mixed fluid, and the receiving signal radio frequency antenna 32 is used to receive the echo signal reflected by the polarized mixed fluid. The positions of the at least one transmitting signal radio frequency antenna 31 and the at least one receiving signal radio frequency antenna 32 along the axial direction of the fluid conduit 1 are related to the flow velocity of the mixed fluid to be detected.

[0061] The shielding shell 4 is located outside the permanent magnet 2 and encloses the permanent magnet 2. The shielding shell 4 is used to shield external interference signals.

[0062] Among them, at least one transmitting signal radio frequency antenna 31 and at least one receiving signal radio frequency antenna 32 are distributed along the axial direction of the fluid conduit 1 to form the nuclear magnetic resonance measurement region n.

[0063] Specifically, during the measurement process using the fluid analyzer probe, the mixed fluid to be tested is introduced into the fluid conduit 1 through the fluid drainage module, causing the mixed fluid to move along the flow direction v. After entering the polarization region r surrounded by permanent magnets 2, the permanent magnets 2 polarize the hydrogen nuclei in the mixed fluid. The permanent magnets 2 can be ring-shaped permanent magnets, and the material of the permanent magnets can be samarium cobalt with a high Curie temperature and a low temperature coefficient. For example, the permanent magnets 2 can be a ring magnet formed by bonding multiple fan-shaped magnets. At this time, at least one transmitting signal radio frequency antenna 31 distributed along the axial direction of the fluid conduit 1 can transmit a resonant signal to the polarized mixed fluid inside the fluid conduit 1, and at least one receiving signal radio frequency antenna 32 in the radio frequency antenna group 3 can receive the echo signal reflected by the polarized mixed fluid. The detected mixed fluid is then discharged into the fluid drainage module through the fluid conduit 1. The number of radio frequency antenna groups 3 can be set according to the actual measurement accuracy. If higher accuracy is required, more radio frequency antenna groups 3 can be set; if lower accuracy is required, fewer radio frequency antenna groups 3 can be set. For example, ... Figure 1 and Figure 2As shown, two radio frequency antenna groups 3 can be evenly distributed around the fluid conduit 1. Each radio frequency antenna group 3 contains a transmitting signal radio frequency antenna 31 and a receiving signal radio frequency antenna 32. The transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 can be a solenoid structure antenna with integrated transmission and reception. The transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 are the same in terms of material, length, winding interval, etc. 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.

[0064] The positions of the transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 along the axial direction of the fluid conduit 1 are related to the flow velocity of the mixed fluid to be detected. For example, it can be understood that if the flow velocity of the mixed fluid to be detected is relatively fast, a larger gap can be set between the transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32; it can be understood that if the flow velocity of the mixed fluid to be detected is relatively slow, a smaller gap can be set between the transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32.

[0065] The fluid analyzer probe designed in this embodiment of the invention includes a fluid conduit 1, a permanent magnet 2, multiple radio frequency antenna groups 3, and a shielding shell 4. Each radio frequency antenna group 3 includes at least one transmitting signal radio frequency antenna 31 and at least one receiving signal radio frequency antenna 32. The fluid conduit 1 is connected to a fluid drainage module. The permanent magnet 2 is arranged around the fluid conduit 1. At least one transmitting signal radio frequency antenna 31 and at least one receiving signal radio frequency antenna 32 are positioned between the fluid conduit 1 and the permanent magnet 2, spaced apart along the flow direction v of the mixed fluid. The shielding shell 4 is located outside the permanent magnet 2 and encloses it. The fluid conduit 1 receives the mixed fluid to be detected introduced by the fluid drainage module. The permanent magnet 2 polarizes the hydrogen nuclei in the mixed fluid flowing into the fluid conduit 1. The transmitting signal radio frequency antenna 31 emits a resonance signal into the polarized mixed fluid, and the receiving signal radio frequency antenna 32 receives the signal. The echo signal reflected by the polarized mixed fluid, i.e., the nuclear magnetic resonance echo train signal, is used to detect the mixed fluid. The detected mixed fluid is discharged into the fluid drainage module through the fluid conduit 1, thereby enabling the fluid analyzer probe to detect the mixed fluid. Compared with the prior art, which only sets one radio frequency transmitting antenna and one radio frequency receiving antenna and does not consider the influence of the mixed fluid flow rate on the detection, this embodiment of the invention sets multiple radio frequency antenna groups 3, and the radio frequency antenna group 3 includes at least one transmitting signal radio frequency antenna 31 and at least one receiving signal radio frequency antenna 32. It considers the influence of the mixed fluid flow rate on the measurement of the mixed fluid. By changing the distance between the transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32, the receiving signal radio frequency antenna 32 can receive the complete echo signal. This can effectively avoid the phenomenon of inaccurate measurement results caused by the mixed fluid flow rate being too fast, reduce the test error of the fluid analyzer probe, and make the acquisition of mixed fluid parameter information more accurate.

[0066] Further reference Figure 1 The transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 are arranged adjacent to each other at equal intervals in the flow direction v of the mixed fluid.

[0067] Specifically, by arranging the transmitting signal RF antenna 31 and the receiving signal RF antenna 32 adjacent to each other and at equal intervals in the flow direction v of the mixed fluid, the spacing between the transmitting signal RF antenna 31 and the receiving signal RF antenna 32 can be determined more accurately according to the flow velocity of the mixed fluid. Furthermore, this RF antenna group 3 can acquire parameter information of the mixed fluid multiple times even when the flow velocity is low, thus making the acquisition of mixed fluid parameter information more accurate. For example, if the RF antenna group 3 includes two transmitting signal RF antennas and two receiving signal RF antennas, and the transmitting signal RF antennas and receiving signal RF antennas are arranged adjacent to each other and at equal intervals in the flow direction of the mixed fluid, if the flow velocity of the mixed fluid is low, the first transmitting signal RF antenna and the third receiving signal RF antenna, which are arranged adjacent to each other, can be turned on, and the second transmitting signal RF antenna and the fourth receiving signal RF antenna, which are arranged adjacent to each other, can be turned on simultaneously. This enables the acquisition of mixed fluid parameter information multiple times, making the acquisition of mixed fluid parameter information more accurate.

[0068] Further reference Figure 1 The transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 are arranged adjacent to each other along the flow direction of the mixed fluid;

[0069] or, Figure 3 This is a schematic diagram of another fluid analyzer probe provided according to an embodiment of the present invention, for reference. Figure 3 The radio frequency antenna group 3 includes at least two radio frequency antennas 31 for transmitting signals and at least two radio frequency antennas 32 for receiving signals;

[0070] Along the flow direction v of the mixed fluid, at least two transmitting signal radio frequency antennas 31 are arranged continuously at equal intervals, and at least two receiving signal radio frequency antennas 32 are arranged continuously at equal intervals.

[0071] Specifically, each radio frequency antenna group 3 includes at least two transmitting signal radio frequency antennas 31 and at least two receiving signal radio frequency antennas 32. Along the flow direction v of the mixed fluid, at least two transmitting signal radio frequency antennas 31 and at least two receiving signal radio frequency antennas 32 are continuously and equally spaced. This allows the radio frequency antenna group 3 to acquire parameter information of the mixed fluid multiple times under conditions of high flow velocity, thereby making the acquisition of mixed fluid parameter information more accurate. For example, if the radio frequency antenna group 3 includes two transmitting signal radio frequency antennas 31 and two receiving signal radio frequency antennas 32, and the first transmitting signal radio frequency antenna and the second transmitting signal radio frequency antenna are equally spaced, and the third receiving signal radio frequency antenna and the fourth receiving signal radio frequency antenna are equally spaced, when the flow velocity of the mixed fluid is high, the first transmitting signal radio frequency antenna and the third receiving signal radio frequency antenna, spaced one radio frequency antenna apart, can be turned on, and the second transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, also spaced one radio frequency antenna apart, can be turned on simultaneously. This enables multiple acquisitions of mixed fluid parameter information, making the acquisition of mixed fluid parameter information more accurate.

[0072] Furthermore, Figure 4 This is a schematic diagram of the structure of another fluid analyzer probe provided according to an embodiment of the present invention, with reference to... Figure 4 The radio frequency antenna group 3 includes a transmitting signal radio frequency antenna 31 and multiple receiving signal radio frequency antennas 32;

[0073] Multiple radio frequency antennas 32 for receiving signals are continuously arranged along the flow direction v of the mixed fluid.

[0074] Specifically, each RF antenna group 3 includes one transmitting signal RF antenna 31 and multiple receiving signal RF antennas 32. The multiple receiving signal RF antennas 32 are continuously arranged along the flow direction v of the mixed fluid, enabling the RF antenna group 3 to adapt to measurement scenarios with various flow velocities and thus have a wider range of applications. For example, if the RF antenna group 3 includes one transmitting signal RF antenna 31 and three receiving signal RF antennas 32, when the flow velocity of the mixed fluid is less than or equal to a first preset value, adjacent transmitting signal RF antennas 31 and 32 can be activated; when the flow velocity of the mixed fluid is greater than the first preset value and less than or equal to a second preset value, transmitting signal RF antennas 31 and 32 spaced apart by one receiving signal RF antenna can be activated; when the flow velocity of the mixed fluid is greater than the second preset value, transmitting signal RF antennas 31 and 32 spaced apart by two receiving signal RF antennas can be activated. This allows the RF antenna group 3 to adapt to measurement scenarios with various flow velocities and has a wider range of applications.

[0075] Further reference Figure 1 The length of the shielding shell 4 is greater than or equal to the length of the permanent magnet 2; and the length of the permanent magnet 2 is greater than or equal to the sum of the lengths of the multiple radio frequency antennas 3.

[0076] Specifically, setting the length of the shielding shell 4 to be greater than or equal to the length of the permanent magnet 2 ensures that the permanent magnet 2 will not be interfered with by external signals during the polarization of hydrogen nuclei in the mixed fluid; and setting the length of the permanent magnet 2 to be greater than or equal to the sum of the lengths of the transmitting signal radio frequency antenna 31 and the receiving signal radio frequency antenna 32 ensures that the radio frequency antenna can receive the complete echo signal at any flow rate of the mixed fluid, thereby enabling accurate detection of the mixed fluid.

[0077] This invention provides a fluid analyzer. Figure 5 This is a schematic diagram of a fluid analyzer according to an embodiment of the present invention, with reference to... Figure 5 The fluid analyzer includes:

[0078] Control module 20, communication module 30, host computer module 40, and fluid analyzer probe 10 as described in any of the above embodiments;

[0079] The first end of the control module 20 is connected to the fluid analyzer probe 10. The control module 20 is used to acquire the flow rate value and accuracy detection requirements of the mixed fluid, and determine the number and position of the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna according to the flow rate value and accuracy detection requirements, and transmit the first control signal to the transmitting signal radio frequency antenna.

[0080] The transmitting radio frequency antenna is used to transmit a resonant signal into the polarized mixed fluid after receiving the first control signal;

[0081] The receiving radio frequency antenna is used to receive the echo signal reflected by the polarized mixed fluid and transmit the echo signal to the control module 20;

[0082] 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.

[0083] Specifically, the flow rate and accuracy requirements of the current environmental mixed fluid can be input to the control module 20 by on-site personnel, or the flow rate and accuracy requirements can be transmitted to the control module 20 after the component measuring instrument measures the flow rate of the current environmental mixed fluid. This embodiment of the invention does not limit this. After receiving the flow rate and accuracy requirements of the current environmental mixed fluid, the control module 20 determines the number and position of the transmitting signal radio frequency antennas and the receiving signal radio frequency antennas according to the flow rate and accuracy requirements. For example, when the accuracy requirement is low, fewer radio frequency antenna groups can be controlled to operate; when the accuracy requirement is high, more radio frequency antenna groups can be controlled to operate. If the RF antenna group includes two transmit signal RF antennas and two receive signal RF antennas, and the first and second transmit signal RF antennas are equally spaced, and the third and fourth receive signal RF antennas are equally spaced, then if the flow velocity is less than or equal to a first preset value, the adjacent second transmit signal RF antenna and third receive signal RF antenna are activated; if the flow velocity is greater than the first preset value and less than or equal to the second preset value, the first transmit signal RF antenna and third receive signal RF antenna, spaced one RF antenna apart, are activated, and / or the second transmit signal RF antenna and fourth receive signal RF antenna, spaced one RF antenna apart, are activated; if the flow velocity is greater than the second preset value, the first transmit signal RF antenna and fourth receive signal RF antenna, spaced two RF antennas apart, are activated; when the transmit signal RF antennas and receive signal RF antennas are adjacent and equally spaced in the flow direction of the mixed fluid... If the flow rate is less than or equal to the first preset value, the system controls the first transmitting signal RF antenna and the third receiving signal RF antenna, which are adjacent to each other, to be turned on and / or controls the second transmitting signal RF antenna and the fourth receiving signal RF antenna, which are adjacent to each other, to be turned on and on. If the flow rate is greater than the first preset value, the system controls the first transmitting signal RF antenna and the fourth receiving signal RF antenna, which are spaced two RF antennas apart, to be turned on and on. When the RF antenna group includes one transmitting signal RF antenna and three receiving signal RF antennas, if the flow rate is less than or equal to the first preset value, the system controls the adjacent transmitting signal RF antenna and the receiving signal RF antenna to be turned on and on. If the flow rate is greater than the first preset value and less than or equal to the second preset value, the system controls the transmitting signal RF antenna and the receiving signal RF antenna, which are spaced one receiving signal RF antenna apart, to be turned on and on. If the flow rate is greater than the second preset value, the system controls the transmitting signal RF antenna and the receiving signal RF antenna, which are spaced two receiving signal RF antennas apart, to be turned on and on.

[0084] After determining the number and position of the transmitting signal RF antennas and the receiving signal RF antennas, control module 2 transmits a first control signal to the transmitting signal RF antennas. Upon receiving the first control signal, the transmitting signal RF antennas transmit a resonant signal to the polarized mixed fluid and receive the echo signal reflected by the polarized mixed fluid through the receiving signal RF antennas. The echo signal is then transmitted to control module 20. After receiving the echo signal, control module 20 transmits it to host computer module 40 through communication module 30, enabling the echo signal to be transmitted to host computer module 40 in a timely manner for data analysis. This allows for the acquisition of 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 mixed fluid in the current environment is analyzed.

[0085] For example, a storage module can also be set in the fluid analyzer. The storage module is connected to the third terminal of the control module 20, so that after the control module 20 receives the echo signal, it transmits the echo signal to the storage module 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 can be compared with the echo signal transmitted to the host computer module 40 to determine whether the communication module 30 is abnormal.

[0086] 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 flow velocity value and accuracy detection requirements of the current environmental mixed fluid, determine the number and position of the transmitting signal RF antennas and the receiving signal RF antennas based on these requirements. It then transmits a first control signal to the transmitting signal RF antennas. Upon receiving the first control signal, the transmitting signal RF antennas transmit a resonant signal to the polarized mixed fluid and receive the echo signal reflected by the polarized mixed fluid through the receiving signal RF antennas. The echo signal is transmitted to the control module 20 to realize 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 for data analysis in a timely manner. Compared with the prior art, which only sets one radio frequency transmitting antenna and one radio frequency receiving antenna and does not consider the influence of the flow velocity of the mixed fluid on the detection, the fluid analyzer set in this embodiment of the invention is equipped with multiple radio frequency antenna groups 3. The radio frequency antenna group 3 includes at least one transmitting signal radio frequency antenna 31 and at least one receiving signal radio frequency antenna 32. The number and position of the transmitting signal radio frequency antenna and the number and position of the receiving signal radio frequency antenna are determined according to the flow velocity value of the mixed fluid in the current environment and the accuracy detection requirements. Under the condition of ensuring more accurate acquisition of parameter information of the mixed fluid, energy consumption can be further reduced.

[0087] Furthermore, the fluid analyzer probe includes two radio frequency antenna groups, and the radio frequency antenna groups include four radio frequency antennas;

[0088] The control module is used for:

[0089] When the accuracy detection requirement is the highest accuracy detection requirement, control one radio frequency antenna group to turn on and operate.

[0090] When the accuracy requirement is the second accuracy requirement, the two radio frequency antenna groups are controlled to turn on and operate. The accuracy of the second accuracy requirement is higher than that of the first accuracy requirement.

[0091] The first accuracy detection requirement and the second accuracy detection requirement can be set according to the actual situation, and the embodiments of the present invention do not impose any restrictions on this.

[0092] Specifically, when the accuracy requirement is the first accuracy requirement, it indicates that the current test accuracy requirement is low. In this case, controlling one RF antenna group to turn on is sufficient to meet the requirement. When the accuracy requirement is the second accuracy requirement, it indicates that the current test accuracy requirement is high. In this case, it is necessary to control two RF antenna groups to turn on. By setting the first and second accuracy requirements in the control module, and controlling the number of RF antenna groups to turn on based on the comparison results between the accuracy requirement and the first and second accuracy requirements, energy consumption can be saved.

[0093] Furthermore, the radio frequency antenna group includes a first transmit signal radio frequency antenna, a second transmit signal radio frequency antenna, a third receive signal radio frequency antenna, and a fourth receive signal radio frequency antenna;

[0094] The control module is used for:

[0095] When the first transmitting signal radio frequency antenna and the second transmitting signal radio frequency antenna are set at equal intervals, and the third receiving signal radio frequency antenna and the fourth receiving signal radio frequency antenna are set at equal intervals;

[0096] If the flow rate is less than or equal to the first preset value, the control will turn on the adjacent second transmitting signal radio frequency antenna and third receiving signal radio frequency antenna.

[0097] If the flow rate is greater than the first preset value and less than or equal to the second preset value, then control the first transmitting signal RF antenna and the third receiving signal RF antenna, which are spaced one RF antenna apart, to be turned on and / or control the second transmitting signal RF antenna and the fourth receiving signal RF antenna, which are spaced one RF antenna apart, to be turned on and operated.

[0098] If the flow rate is greater than the second preset value, the first transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are set at intervals of two radio frequency antennas, will be turned on and put into operation.

[0099] When the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other at equal intervals in the flow direction of the mixed fluid;

[0100] If the flow rate is less than or equal to the first preset value, the first transmitting signal RF antenna and the third receiving signal RF antenna, which are set up adjacent to each other, will be turned on and operated, and / or the second transmitting signal RF antenna and the fourth receiving signal RF antenna, which are set up adjacent to each other, will be turned on and operated.

[0101] If the flow rate is greater than the first preset value, the first transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are set at a distance of two radio frequency antennas, will be turned on and put into operation.

[0102] The first preset value and the second preset value can be set according to the actual situation, and the embodiments of the present invention do not impose any restrictions on this.

[0103] Specifically, when the first and second transmitting signal RF antennas are equally spaced, and the third and fourth receiving signal RF antennas are equally spaced, if the flow velocity is less than or equal to the first preset value, it indicates that the flow velocity of the mixed fluid is relatively low. In this case, a shorter interval should be set between the transmitting and receiving signal RF antennas, and the adjacent second and third transmitting signal RF antennas are turned on. If the flow velocity is greater than the first preset value and less than or equal to the second preset value, it indicates that the flow velocity of the mixed fluid is moderate. In this case, a moderate interval should be set between the transmitting and receiving signal RF antennas, and the first and third transmitting signal RF antennas spaced one RF antenna apart are turned on, and / or the second and fourth transmitting signal RF antennas spaced one RF antenna apart are turned on. If the flow velocity is greater than the second preset value, it indicates that the flow velocity of the mixed fluid is relatively high. In this case, a larger interval should be set between the transmitting and receiving signal RF antennas, and the first and fourth transmitting signal RF antennas spaced two RF antennas apart are turned on.

[0104] When the transmitting and receiving RF antennas are positioned adjacent to each other at equal intervals in the flow direction of the mixed fluid, if the flow velocity is less than or equal to a first preset value, it indicates that the flow velocity of the mixed fluid is relatively low. In this case, a smaller interval should be set between the transmitting and receiving RF antennas. Then, the first transmitting and third receiving RF antennas, which are positioned adjacent to each other, are turned on, and / or the second transmitting and fourth receiving RF antennas, which are positioned adjacent to each other, are turned on. If the flow velocity is greater than the first preset value, it indicates that the flow velocity of the mixed fluid is relatively high. In this case, a larger interval should be set between the transmitting and receiving RF antennas. Then, the first transmitting and fourth receiving RF antennas, which are positioned two RF antennas apart, are turned on.

[0105] Furthermore, the radio frequency antenna assembly includes one transmit signal radio frequency antenna and three receive signal radio frequency antennas;

[0106] The control module is used for:

[0107] If the flow rate is less than or equal to the first preset value, the control will turn on the adjacent transmitting signal radio frequency antenna and receiving signal radio frequency antenna.

[0108] If the flow rate is greater than the first preset value and less than or equal to the second preset value, the control will turn on the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna, which are set at a distance of one receiving signal radio frequency antenna.

[0109] If the flow rate is greater than the second preset value, the control will turn on the radio frequency antenna for transmitting the signal and the radio frequency antenna for receiving the signal, which are set at intervals of two receiving signal radio frequency antennas.

[0110] Specifically, if the flow rate is less than or equal to the first preset value, it indicates that the flow rate of the mixed fluid is relatively low. In this case, a smaller interval should be set between the transmitting and receiving RF antennas. Therefore, the control will activate the adjacent transmitting and receiving RF antennas. If the flow rate is greater than the first preset value and less than or equal to the second preset value, it indicates that the flow rate of the mixed fluid is moderate. In this case, a moderate interval should be set between the transmitting and receiving RF antennas. Therefore, the control will activate the transmitting and receiving RF antennas spaced one RF antenna apart. If the flow rate is greater than the second preset value, it indicates that the flow rate of the mixed fluid is relatively high. In this case, a larger interval should be set between the transmitting and receiving RF antennas. Therefore, the control will activate the transmitting and receiving RF antennas spaced two RF antennas apart.

[0111] Further reference Figure 5 The control module 20 is also used for:

[0112] The first distance from the first end of the permanent magnet to the first end of each radio frequency antenna is obtained, and the first time when the mixed fluid flows through each radio frequency antenna is determined based on the first distance and the flow velocity value. The first time is then transmitted to the host computer module 40 through the communication module 30.

[0113] For example, such as Figure 4As shown, the distance sensor can measure the first distance value d1 between the first end of the permanent magnet and the first end of the transmitting signal radio frequency antenna 31, the second distance value d2 between the first end of the permanent magnet and the first end of the first receiving signal radio frequency antenna, the third distance value d3 between the first end of the permanent magnet and the first end of the second receiving signal radio frequency antenna, and the fourth distance value d4 between the first end of the permanent magnet and the first end of the third receiving signal radio frequency antenna. The first distance includes the first distance value d1, the second distance value d2, the third distance value d3, and the fourth distance value d4. These values ​​are then transmitted to the control module 20. If the control module 20 obtains the current flow velocity value of the mixed fluid in the environment as V, then the flow velocity of the mixed fluid to the transmitting signal radio frequency antenna 31 can be calculated. The first time t1 = d1 / V at the first end, the second time t2 = d1 / V at the first end of the first receiving signal RF antenna, the third time t3 = d3 / V at the first end of the second receiving signal RF antenna, and the fourth time t4 = d4 / V at the first end of the third receiving signal RF antenna; and the first time t1, the second time t2, the third time t3, and the fourth time t4 are transmitted to the host computer module 40 through the communication module 30, so that the staff can effectively eliminate the inaccuracy of the nuclear magnetic resonance measurement results caused by the velocity of the mixed fluid based on the received echo signal and the first time t1, the second time t2, the third time t3, and the fourth time t4, thereby improving the effectiveness of the fluid analyzer set in this embodiment of the invention for measuring mixed fluids.

[0114] 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.

[0115] 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, permanent magnet, multiple radio frequency antenna arrays, and shielding housing; The radio frequency antenna group includes at least one radio frequency antenna for transmitting signals and at least one radio frequency antenna for receiving signals; The fluid conduit is connected to the fluid drainage module and is used to receive the mixed fluid to be detected introduced by the fluid drainage module, and to discharge the detected mixed fluid into the fluid drainage module; The permanent magnet is arranged around the fluid conduit, and the permanent magnet is used to polarize the hydrogen nuclei in the mixed fluid flowing into the fluid conduit; At least one of the transmitting signal radio frequency antennas and at least one of the receiving signal radio frequency antennas are disposed between the fluid conduit and the permanent magnet. At least one of the transmitting signal radio frequency antennas and at least one of the receiving signal radio frequency antennas are spaced apart along the flow direction of the mixed fluid. The transmitting signal radio frequency antenna is used to transmit a resonant signal to the polarized mixed fluid, and the receiving signal radio frequency antenna is used to receive the echo signal reflected by the polarized mixed fluid. The positions of at least one transmitting signal radio frequency antenna and at least one receiving signal radio frequency antenna distributed along the axial direction of the fluid conduit are related to the flow velocity of the mixed fluid to be detected; The shielding shell is disposed on the outside of the permanent magnet and encloses the permanent magnet. The shielding shell is used to shield external interference signals.

2. The fluid analyzer probe according to claim 1, characterized in that, The transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other at equal intervals in the flow direction of the mixed fluid.

3. The fluid analyzer probe according to claim 1, characterized in that, The transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other along the flow direction of the mixed fluid; Alternatively, the radio frequency antenna group may include at least two transmit signal radio frequency antennas and at least two receive signal radio frequency antennas; Along the flow direction of the mixed fluid, at least two radio frequency antennas for transmitting signals are arranged continuously at equal intervals, and at least two radio frequency antennas for receiving signals are arranged continuously at equal intervals.

4. The fluid analyzer probe according to claim 1, characterized in that, The radio frequency antenna group includes one radio frequency antenna for transmitting signals and multiple radio frequency antennas for receiving signals; Along the flow direction of the mixed fluid, a plurality of radio frequency antennas for receiving signals are arranged consecutively.

5. 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 permanent magnet; and the length of the permanent magnet is greater than or equal to the sum of the lengths of the plurality of radio frequency antennas.

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 acquire the flow rate value and accuracy detection requirements of the mixed fluid, and determine the number and position of the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna according to the flow rate value and the accuracy detection requirements, and transmit the first control signal to the transmitting signal radio frequency antenna. The radio frequency antenna for transmitting signals is used to transmit a resonant signal to the polarized mixed fluid after receiving the first control signal; The receiving signal radio frequency antenna is used to receive the echo signal reflected by the polarized mixed fluid and 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 fluid analyzer probe includes two radio frequency antenna groups, and the radio frequency antenna groups include four radio frequency antennas; The control module is used for: When the accuracy detection requirement is the first accuracy detection requirement, one of the radio frequency antenna groups is controlled to turn on and operate. When the accuracy detection requirement is the second accuracy detection requirement, the two radio frequency antenna groups are controlled to turn on and operate, wherein the accuracy of the second accuracy detection requirement is higher than the accuracy of the first accuracy detection requirement.

8. The fluid analyzer according to claim 7, characterized in that, The radio frequency antenna group includes a first transmitting signal radio frequency antenna, a second transmitting signal radio frequency antenna, a third receiving signal radio frequency antenna, and a fourth receiving signal radio frequency antenna; The control module is used for: When the first transmitting signal radio frequency antenna and the second transmitting signal radio frequency antenna are arranged at equal intervals, and the third receiving signal radio frequency antenna and the fourth receiving signal radio frequency antenna are arranged at equal intervals; If the flow rate value is less than or equal to the first preset value, then the second transmitting signal radio frequency antenna and the third receiving signal radio frequency antenna, which are arranged adjacently, will be turned on and put into operation. If the flow rate value is greater than the first preset value and less than or equal to the second preset value, then control the first transmitting signal radio frequency antenna and the third receiving signal radio frequency antenna, which are spaced apart by one radio frequency antenna, to be turned on and operated, and / or control the second transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are spaced apart by one radio frequency antenna, to be turned on and operated; If the flow rate value is greater than the second preset value, then the first transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are set at a distance of two radio frequency antennas, are turned on and put into operation. When the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna are arranged adjacent to each other at equal intervals in the flow direction of the mixed fluid; If the flow rate value is less than or equal to the first preset value, then control the first transmitting signal radio frequency antenna and the third receiving signal radio frequency antenna that are arranged adjacently to be turned on and operated, and / or control the second transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna that are arranged adjacently to be turned on and operated; If the flow rate value is greater than the first preset value, then the first transmitting signal radio frequency antenna and the fourth receiving signal radio frequency antenna, which are set at a distance of two radio frequency antennas, are turned on and put into operation.

9. The fluid analyzer according to claim 7, characterized in that, The radio frequency antenna group includes one radio frequency antenna for transmitting signals and three radio frequency antennas for receiving signals; The control module is used for: If the flow rate value is less than or equal to the first preset value, then the adjacent transmitting signal radio frequency antenna and receiving signal radio frequency antenna will be turned on and put into operation. If the flow rate value is greater than the first preset value and less than or equal to the second preset value, then the transmitting signal radio frequency antenna and the receiving signal radio frequency antenna, which are spaced apart by one receiving signal radio frequency antenna, are turned on and put into operation. If the flow rate value is greater than the second preset value, then the radio frequency antennas for transmitting the signal and receiving the signal, which are set at intervals of two receiving signal radio frequency antennas, are turned on and put into operation.

10. The fluid analyzer according to claim 6, characterized in that, The control module is also used for: The first distance from the first end of the permanent magnet to the first end of each radio frequency antenna is obtained, and the first time the mixed fluid flows through each radio frequency antenna is determined based on the first distance and the flow velocity value. The first time is then transmitted to the host computer module through the communication module.

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