CN110792424A - External axial type ultrasonic flow measurement device and method - Google Patents
External axial type ultrasonic flow measurement device and method Download PDFInfo
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- CN110792424A CN110792424A CN201911029989.8A CN201911029989A CN110792424A CN 110792424 A CN110792424 A CN 110792424A CN 201911029989 A CN201911029989 A CN 201911029989A CN 110792424 A CN110792424 A CN 110792424A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Mining
Abstract
The application provides a device and method of external axial formula ultrasonic measurement flow, device include top connection, lower clutch, go up the transducer, lower transducer, honeycomb duct and control mechanism, the top connection is installed the upper end of honeycomb duct, it installs to go up the transducer axial inside the top connection, the lower clutch is installed the lower extreme of honeycomb duct, transducer axial is installed down inside the lower clutch, control mechanism sets up the honeycomb duct is outside, go up the transducer with the transducer pass through the wire down with control mechanism links to each other. The method for measuring the flow by ultrasonic waves can conveniently and accurately measure the flow Q of the channel.
Description
Technical Field
The application relates to the field of, but not limited to, downhole water injection measurement, in particular to an external axial type ultrasonic flow measurement device and method.
Background
The water injection development is one of effective methods for prolonging the high-yield and stable-production period of the oil field, improving the ultimate recovery rate and obtaining better economic benefits, and is a technical support with the least investment and the best effect. Because the difference of the physical properties of the oil layer is large and the difference of water absorption between layers is large, in order to relieve the uneven water absorption of the oil layer, separate-layer water injection is needed. The oil reservoir department needs to monitor and know the flow, pressure and temperature of each underground layer regularly or in real time so as to adjust the water injection quantity of each layer in time, and the purposes of sufficient water injection, good water injection, fine water injection and effective water injection can be achieved.
The measurement of the single-layer injection flow of the separate-layer water injection well is the key for realizing intelligent separate-layer water injection. The existing flowmeters for measuring the flow of water injected into the well mainly comprise a turbine flowmeter, a vortex shedding flowmeter, a throttling differential pressure type flowmeter, an electromagnetic flowmeter, an ultrasonic flowmeter and the like, a probe is in contact with well fluid, the flow measurement precision is influenced by the conditions of pollution, scaling, erosion, corrosion and the like of the probe, and meanwhile, the probe bears the high temperature and the high pressure in the well and has poor long-term working stability. The traditional ultrasonic flowmeter probe adopts a V-shaped, W-shaped and Z-shaped arrangement method, the interfaces and the sound wave propagation direction have a certain included angle, signal attenuation exists, meanwhile, certain requirements on pipe diameter and flow are required, and the traditional ultrasonic flowmeter probe is not suitable for an underground water distributor with small outer diameter and small flow.
Disclosure of Invention
The application provides an external axial type ultrasonic flow measuring device and method, which can effectively solve the problem that a probe is easy to damage in the measuring process, and is high in measuring precision.
The application provides an external axial ultrasonic flow measuring device, which comprises an upper joint, a lower joint, an upper transducer, a lower transducer, a flow guide pipe and a control mechanism,
the upper joint is arranged at the upper end of the flow guide pipe, the upper energy converter is axially arranged in the upper joint, the lower joint is arranged at the lower end of the flow guide pipe, the lower energy converter is axially arranged in the lower joint,
the control mechanism is arranged outside the flow guide pipe, and the upper energy converter and the lower energy converter are connected with the control mechanism through leads.
The application also provides a method for measuring the flow rate by ultrasonic waves, which adopts the external axial ultrasonic flow rate measuring device, and the transducer transmits a detection signal to the fluid in the channel to be measured, wherein the detection signal is an ultrasonic signal;
the time for the detection signal to pass from the upper transducer to the lower transducer is t1, and the time for the detection signal to pass from the lower transducer to the upper transducer is t 2;
the distance between the upper transducer and the lower transducer is L, the propagation speed of sound waves in static fluid is c, the sectional area of the channel to be measured is s, and the flow rate of the channel is
Compared with the prior art, the method has the following beneficial effects:
the external axial ultrasonic flow measurement device can be widely used for measuring the single-layer injection flow of the layered water injection well, wherein an ultrasonic probe (namely a transducer) of the device is externally arranged (arranged in an upper connector or a lower connector) and is not contacted with well liquid flowing at a high speed, so that the occurrence of the conditions of pollution, scaling, erosion, corrosion and the like of the probe is avoided, meanwhile, the probe is not subjected to fluid pressure, is not easy to fatigue, and improves the stability of long-term high-temperature and high-pressure work; the ultrasonic probe is axially installed, so that the effective sound path is greatly increased, the measurement accuracy (especially small pipe diameter and small flow) is improved, and the measurement accuracy and the service life of the water distributor using the external axial ultrasonic flow measurement device are improved. In addition, the ultrasonic flow measuring device provided by the application has the advantages of relatively simple structure, high working reliability and long service life, and greatly improves the practicability of the device.
According to the method for measuring the flow by the ultrasonic waves, the measuring result is not affected by the type of the fluid, the measurement is convenient and fast, and the practicability of the method is greatly improved.
Other features and advantages of the present application will be set forth in the description that follows.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
Fig. 1 is a schematic structural diagram of an external axial ultrasonic flow measurement device according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an upper joint according to an embodiment of the present disclosure;
fig. 3 is a schematic cross-sectional view of an upper joint according to an embodiment of the present application.
Illustration of the drawings:
1-upper joint, 11-outer cylinder structure, 12-inner cylinder structure, 13-closed end, 14-open end, 15-ribbed plate, 16-wire through hole, 2-upper transducer, 3-lower joint, 4-lower transducer, 5-draft tube, 6-control mechanism, 7-lead, 81-upper top sleeve, 82-lower top sleeve, 91-upper sealing plug and 92-lower sealing plug.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the application provides an external axial type ultrasonic flow measuring device, as shown in fig. 1, the device includes top connection 1, lower clutch 3, go up transducer 2, lower transducer 4, honeycomb duct 5 and control mechanism 6, top connection 1 is installed in the upper end of honeycomb duct 5 through threaded connection's mode, it installs inside top connection 1 to go up transducer 2 axial, the lower extreme at honeycomb duct 5 is installed through threaded connection's mode to lower clutch 3, lower transducer 4 axial is installed inside lower clutch 3, control mechanism 6 sets up in honeycomb duct 5 outside, it links to each other with control mechanism 6 through wire 7 to go up transducer 2 and lower transducer 4.
In actual use, the upper end of the upper joint 1 is connected with a water inlet of the water distributor, and the lower end of the lower joint 3 is connected with a water outlet of the water distributor. The draft tube 5 can be a vertically symmetrical structure, fluid flows through the inside of the draft tube 5, the side walls of the upper end and the lower end of the draft tube 5 are provided with wire 7 through holes (not shown in the figure), the corresponding positions of the upper joint 1 and the lower joint 3 are provided with wire through holes 16 for passing wires, the position of the control mechanism 6 is arranged outside the draft tube 5, the two ends of the control mechanism 6 can be provided with connecting wires 7, and the upper transducer 2 and the lower transducer 4 are respectively connected with the wire through holes 7 and the wire through holes 16. The upper transducer 2 and the lower transducer 4 are both axially arranged in the upper joint 1 or the lower joint 3, and the central axis of the upper transducer 2, the central axis of the lower transducer 4 and the central axis of the flow guide pipe are coincident.
In an exemplary embodiment, as shown in fig. 2 and 3, the upper joint 1 is a double-cylinder structure nested inside and outside, the inner cylinder structure 12 is open at one end and closed at the other end, and the closed end 13 faces the draft tube 5; the outer cylindrical structure 11 is a through channel; the inner cylinder and the outer cylinder are connected and fixed through a rib plate 15.
The upper joint 1 is a double-cylinder structure (bridge channel) nested inside and outside, fluid flows through a channel between the inner cylinder structure 12 and the outer cylinder structure 11, and the upper transducer 2 is arranged in the inner cylinder structure 12 and is relatively isolated from external fluid. The inner and outer cylindrical structures are connected and fixed through a ribbed plate 15, and the ribbed plate 15 can be integrally formed with the inner and outer cylindrical structures. The lower joint 3 has the same structure as the upper joint 1.
In an exemplary embodiment, as shown in FIG. 1, the upper transducer 2 is mounted in the inner cylindrical structure 12 with one end of the upper transducer 2 abutting the closed end 13 and the upper top sleeve 81 abutting the other end of the upper transducer 2 to secure the upper transducer 2 in the inner cylindrical structure 12. The outer side of the upper top sleeve 81 is also provided with an upper sealing plug 91, and the upper sealing plug 91 seals the upper top sleeve 81 and the upper transducer 2 in the inner cylindrical structure 12.
One end of the inner cylindrical structure 12 is open (i.e. the open end 14) and the other end is closed, the upper transducer 2 is installed in the inner cylindrical structure 12 and is propped against the closed end 13, and then the transducer is firmly fixed through the upper top sleeve 81. An upper sealing plug 91 is further installed on the outer side (the side far away from the upper transducer 2) of the upper top sleeve 81, and the upper sealing plug 91 isolates the upper transducer 2 (including the upper top sleeve 81) from external fluid, so that the upper transducer 2 is not influenced by the external fluid.
The lower transducers 4 at the lower part of the draft tube 5 are arranged in a manner similar to the upper transducers 2, symmetrically arranged at both ends of the draft tube 5.
In an exemplary embodiment, the lower transducer 4 is mounted in an inner cylindrical structure of the lower connector 3, with one end of the lower transducer 4 abutting the closed end of the lower connector 3 and the lower top sleeve 82 abutting the other end of the lower transducer 4, securing the lower transducer 4 in the inner cylindrical structure. The lower top case 82 is also provided on its outside with a lower sealing plug 92, the lower sealing plug 92 sealing the lower top case 82 and the lower transducer 4 in an inner cylindrical configuration.
In an exemplary embodiment, the control means 6 comprise an excitation signal amplification module (not shown in the figures).
The control mechanism 6 can be a circuit board, and comprises an excitation signal amplification module besides conventional functional modules such as a communication module, a power supply module and a data storage processing analysis module, wherein the excitation signal amplification module can effectively improve the energy of transmitted and received signals, so that the measurement accuracy is improved.
The embodiment of the application also provides a method for measuring the flow rate by ultrasonic waves, which adopts the external axial ultrasonic flow rate measuring device, and the transducer transmits a detection signal to the fluid in the channel to be measured, wherein the detection signal is an ultrasonic signal; the time for the detection signal to pass from the upper transducer 2 to the lower transducer 4 is t1, and the time for the detection signal to pass from the lower transducer 4 to the upper transducer 2 is t 2; the distance between the upper transducer 2 and the lower transducer 4 is L, the propagation speed of sound waves in static fluid is c, the sectional area of a channel to be measured is s, and then the flow rate of the channel is
The measuring method comprises the following steps:
the ultrasonic signal from one transducer is transmitted to the other transducer through the pipe wall (i.e. the thickness of the closed end of the inner cylindrical structure) and the liquid in the flow guide pipe 5, and the time t for transmitting the ultrasonic signal from the upper transducer 2 to the lower transducer 4 is12(in the downstream direction), the time t for the ultrasonic signal from the lower transducer 4 to pass to the lower transducer 4 is21The ultrasonic wave propagation times (in the counter-current direction) were:
wherein L is0The thickness of the closed end of the inner cylindrical structure, L is the distance between the two transducers, C1Is the propagation velocity of the ultrasonic waves in the closed end, C is the propagation velocity of the ultrasonic waves in the stationary fluid, and V is the average velocity of the fluid in the flow guide tube 5.
Time difference:
in industrial flow measurements, the ultrasonic velocity in a liquid is generally above 1000m/s, while the flow velocity of the fluid does not exceed a dozen meters per second, that is to say C2Is far greater than V2Thus, the above equation can be simplified as:
further, the following is obtained:
the flow in the draft tube 5 is represented by Q, then:
wherein A is the cross-sectional area of the draft tube. (correction factor may be included in the formula of Q described above depending on the case)
In an exemplary embodiment, the length of L is equal to or greater than 10 times the inner diameter of the draft tube.
For example: the inner diameter of the draft tube is set to be 20mm, and the length of the L is set to be 20 cm.
In order to ensure the sound path, the draft tube 5 needs to have a specific length, the minimum length of the draft tube 5 is 20cm, and the maximum length can be determined according to actual needs.
In the description of the present application, it should be noted that the terms "plurality" refer to two or more, "upper", "lower", "one side", "the other side", "one end", "the other end", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the structures referred to have a specific orientation, are configured and operated in a specific orientation, and thus, cannot be construed as limiting the present application.
In the description of the embodiments of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "mounted" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiments described herein are exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements that have been disclosed in this application may also be combined with any conventional features or elements to form unique aspects as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other aspects to form another unique aspect as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
Claims (10)
1. An external axial ultrasonic flow measuring device is characterized by comprising an upper joint, a lower joint, an upper transducer, a lower transducer, a flow guide pipe and a control mechanism,
the upper joint is arranged at the upper end of the flow guide pipe, the upper energy converter is axially arranged in the upper joint, the lower joint is arranged at the lower end of the flow guide pipe, the lower energy converter is axially arranged in the lower joint,
the control mechanism is arranged outside the flow guide pipe, and the upper energy converter and the lower energy converter are connected with the control mechanism through leads.
2. The external axial ultrasonic flow measuring device as claimed in claim 1, wherein the upper joint is a double-cylinder structure nested inside and outside,
one end of the inner cylindrical structure is open, the other end of the inner cylindrical structure is closed, and the closed end faces the flow guide pipe; the outer cylindrical structure is a through channel;
the inner cylinder and the outer cylinder are connected and fixed through a ribbed plate.
3. The external axial ultrasonic flow measuring device as claimed in claim 2, wherein the lower joint is the same as the upper joint, and the lower joint and the upper joint are symmetrically arranged at two ends of the flow guide pipe.
4. The external axial ultrasonic flow measuring device of claim 2, wherein said upper transducer is mounted in said inner cylindrical structure with one end of said upper transducer abutting said closed end,
the external axial type ultrasonic flow measuring device further comprises an upper ejection sleeve, wherein the upper ejection sleeve abuts against the other end of the upper transducer to fix the upper transducer in the inner cylindrical structure.
5. The external axial ultrasonic flow measuring device as defined in claim 4, wherein an upper sealing plug is further disposed on the outside of the upper plug sleeve, and the upper sealing plug seals the upper plug sleeve and the upper transducer in the inner cylindrical structure.
6. The external axial ultrasonic flow measuring device of claim 3, wherein the lower transducer is mounted in the inner cylindrical structure of the lower connector, one end of the lower transducer abuts against the closed end of the lower connector, and the lower top sleeve abuts against the other end of the lower transducer to fix the lower transducer in the inner cylindrical structure.
7. The external axial ultrasonic flow measuring device as defined in claim 6, wherein a lower sealing plug is further disposed on the outside of the lower sleeve, and the lower sealing plug seals the lower sleeve and the lower transducer in the inner cylindrical structure.
8. The external axial ultrasonic flow measurement device as defined in any one of claims 1 to 7, wherein the control mechanism comprises an excitation signal amplification module.
9. A method for measuring flow rate by ultrasonic waves, which is characterized in that the external axial type ultrasonic flow rate measuring device according to any one of claims 1 to 8 is adopted, and a transducer emits a detection signal to fluid in a channel to be measured, wherein the detection signal is an ultrasonic signal;
the time for the detection signal to pass from the upper transducer to the lower transducer is t1, and the time for the detection signal to pass from the lower transducer to the upper transducer is t 2;
calculating channel flow
Wherein, L is the distance between the upper transducer and the lower transducer, c is the propagation speed of the sound wave in the static fluid, and s is the sectional area of the channel to be measured.
10. The method of claim 9, wherein the length of L is 10 times or more the inner diameter of the conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911029989.8A CN110792424A (en) | 2019-10-28 | 2019-10-28 | External axial type ultrasonic flow measurement device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911029989.8A CN110792424A (en) | 2019-10-28 | 2019-10-28 | External axial type ultrasonic flow measurement device and method |
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| CN110792424A true CN110792424A (en) | 2020-02-14 |
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| CN201911029989.8A Pending CN110792424A (en) | 2019-10-28 | 2019-10-28 | External axial type ultrasonic flow measurement device and method |
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2019
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| US20090019945A1 (en) * | 2004-10-13 | 2009-01-22 | Shigetada Matsushita | Ultrasonic Flowmaster |
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