CN111189909A

CN111189909A - Superficial layer water flow sound wave testing device

Info

Publication number: CN111189909A
Application number: CN202010021155.9A
Authority: CN
Inventors: 王欢欢; 杨进; 李莅临; 张东昱甫; 汪文星; 洪佳瑶
Original assignee: China University of Petroleum Beijing
Current assignee: China University of Petroleum Beijing
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-05-22
Also published as: WO2021139639A1

Abstract

The application discloses a shallow water flow acoustic wave testing device, comprising: a reaction kettle provided with a test chamber; the side of the reaction kettle extending along the length direction can apply confining pressure to the test chamber; The connecting line between the transmitting part and the receiving part is perpendicular to the length direction; the temperature and pressure test assembly is set in the test chamber; the thrust assembly is set at one end of the reactor extending along the length direction, and at least part of the thrust assembly extends into the test chamber Inside the cabin; the liquid injection assembly connected to the test cabin; the control part, the control part is electrically connected with the launcher, the receiver, the temperature and pressure test assembly, the thrust assembly, and the liquid injection assembly, and is used to obtain the sound wave information emitted by the launcher, receive The acoustic wave information received by the component, the pressure and temperature information obtained by the thermobaric test component. The shallow water flow acoustic wave testing device provided by the present application can test the acoustic response of the shallow water flow under different pressure changes, and is helpful to study the influence law of the shallow water flow on the acoustic characteristics.

Description

Superficial layer water flow sound wave testing device

Technical Field

The application relates to the technical field of oil and gas development, in particular to a shallow water flow sound wave testing device.

Background

Shallow water flow is a serious deepwater drilling geological disaster, can prolong the non-production time of drilling operation, causes huge economic loss, and even leads to abandonment of wells and platforms. With the deep development of oil and gas development, the geological disasters of shallow water flow are continuously paid attention to in the drilling and production process.

The identification of the shallow water flow geological disasters is mainly predicated by means of a seismic profile technology. However, due to the limitation of the prior art, and the characteristics of high pressure, small volume, small buried depth and the like of deep sea shallow water flow, the prediction accuracy of the seismic profile technology is not high.

Disclosure of Invention

In view of the defects of the prior art, an object of the present application is to provide a superficial water flow acoustic wave testing apparatus, which is capable of testing acoustic responses of superficial water flows under different pressure changes, and is helpful for studying the influence rule of the superficial water flows on acoustic characteristics, so as to lay a theoretical foundation for establishing a superficial water flow geological disaster acoustic prediction model and further analyzing the risk of drilling in the superficial water flows.

In order to achieve the purpose, the technical scheme is as follows:

a shallow water flow acoustic wave test device, comprising:

the reaction kettle is provided with a test chamber and extends along the length direction of the reaction kettle; the side surface of the reaction kettle extending along the length direction can apply confining pressure to the test chamber;

the sound wave testing assembly is arranged in the testing cabin and comprises an emitting piece and a receiving piece, the emitting piece and the receiving piece are arranged on the inner wall of the reaction kettle, and a connecting line of the emitting piece and the receiving piece is vertical to the length direction;

the temperature and pressure testing assembly is arranged in the testing cabin and is used for acquiring the pressure and the temperature in the testing cabin;

the thrust assembly is arranged at one end of the reaction kettle, which extends along the length direction, and at least part of the thrust assembly extends into the test cabin;

the liquid injection assembly is communicated with the test cabin and is used for injecting liquid into the test cabin;

the control part, the control part with the piece is launched, is received piece, warm pressure test subassembly, thrust subassembly, annotates the liquid subassembly electricity and is connected, is used for control the piece is launched, is received piece, warm pressure test subassembly, thrust subassembly, annotates the switching of liquid subassembly, is used for acquireing the sound wave information that the piece was launched the sound wave information that the piece was received the warm pressure and the temperature information that the test subassembly was acquireed.

As a preferred embodiment, the test chamber is provided with a plurality of warm-pressure test surfaces in a direction perpendicular to the length direction of the reaction kettle, and each warm-pressure test surface is provided with a plurality of warm-pressure test assemblies; the plane where the connecting line of the emitting piece and the receiving piece is located is different from the warm-pressing test surface.

As a preferred embodiment, a plurality of the acoustic testing assemblies are arranged at intervals along the length direction of the reaction kettle; the warm-pressing test assembly comprises a temperature test element and a pressure test element.

As a preferred embodiment, the test chamber is provided with four temperature and pressure test surfaces at intervals uniformly in the direction perpendicular to the length direction of the reaction kettle, and each temperature and pressure test surface is provided with a plurality of temperature and pressure test components which are uniformly distributed; the emitting piece is three along reation kettle's even interval of length direction sets up on the inner wall of reation kettle left side, three receive the piece and follow reation kettle's even interval of length direction sets up on the inner wall of reation kettle right side.

As a preferred embodiment, a groove for installing the acoustic wave testing component is arranged on the inner wall of the reaction kettle; a protective shell is arranged outside the launching piece and the receiving piece; the emitting piece and the receiving piece face to the center line of the test chamber, the emitting piece and the receiving piece face oppositely, and the included angle is 180 degrees.

As a preferred embodiment, the thrust assembly comprises:

the push plate is arranged in the test cabin, and the section of the push plate is the same as that of the test cabin;

the push rod is connected with the push plate and extends along the length direction of the reaction kettle;

the sealing element is arranged at the joint of the push rod and the reaction kettle and used for sealing the test cabin;

and the loading piece is connected with the push rod and used for providing power for the push rod.

As a preferred embodiment, the liquid injection assembly includes:

a liquid inlet arranged at the bottom of the reaction kettle;

a liquid inlet pipeline connected with the liquid inlet;

the liquid tank is positioned at one end of the liquid inlet pipeline, which is far away from the liquid inlet;

the liquid inlet pipeline is sequentially arranged from upstream to downstream and is positioned between the liquid tank and the liquid inlet.

As a preferred embodiment, a one-way valve is arranged between the flow control element and the liquid inlet; and a liquid outlet is formed at the bottom of the reaction kettle.

As a preferred embodiment, the reactor further comprises a supporting frame, wherein the reaction kettle is placed on the supporting frame; the thrust assembly is connected with the support frame and is positioned above the reaction kettle; the reaction kettle is provided with a cover body, and the cover body is provided with a flange hole for installation.

As a preferred embodiment, the cover body is further provided with a first through hole, a second through hole and a third through hole; the first through hole is used for a lead connected with the emitting piece to pass through, the second through hole is used for a lead connected with the receiving piece to pass through, the third through hole is used for a lead connected with the warm-pressing testing assembly to pass through, and the emitting piece, the receiving piece and the warm-pressing testing assembly are electrically connected to the control part through leads respectively.

Has the advantages that:

the shallow water flow sound wave testing device that this application embodiment provided can change the pressure in the test chamber through setting up the reation kettle that can apply the confined pressure, the thrust subassembly that is located the one end that reation kettle extends along length direction. By arranging the sound wave testing component and the temperature and pressure testing component, the acoustic response of the shallow water flow under different pressure changes can be tested, the influence rule of the shallow water flow on acoustic characteristics can be researched, and a theoretical basis is established for establishing a shallow water flow geological disaster acoustic prediction model and further analyzing the risk of drilling in the shallow water flow.

The superficial water flow sound wave testing device is suitable for synchronous monitoring of the superficial water flow sound wave state, and can monitor acoustic response information in tests such as a superficial water flow stratum bearing capacity simulation test and a superficial water flow variable stress loading test. The method is also suitable for measuring the sound wave, temperature and pressure information of the shallow water flow under different pressure states, and can obtain the sound wave state and the stratum mechanical parameters of the shallow water flow under a high pressure state. The device is easy and simple to handle, can realize the synchronous collection of acoustic signal in the mechanical experimental process of different rivers nature under the vary voltage state.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a shallow water flow acoustic wave testing apparatus according to an embodiment of the present disclosure;

FIG. 2 is a top view of the thrust assembly and cover assembly of FIG. 1;

FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a top view of the reactor without the lid;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic structural diagram of a priming assembly provided in an embodiment of the present application;

fig. 7 is a schematic diagram of a shallow water flow acoustic wave test simulation experiment in the embodiment of the present application.

Description of reference numerals:

1. a reaction kettle; 2. a test chamber; 3. a launch member; 4. a receiver; 5. a warm-pressing test component; 51. warm-pressing the test surface;

6. a thrust assembly; 61. pushing the plate; 62. a push rod; 63. a seal member; 64. a loading member;

7. a liquid injection assembly; 71. a liquid tank; 72. a first valve; 73. a high pressure injection pump; 74. a flow control element;

8. a control unit; 9. a support frame; 10. a liquid inlet; 11. a liquid outlet; 12. a cover body; 13. a flange hole; 14. a first through hole; 15. a second through hole; 16. a third through hole; 17. a flange interface; 18. axial pressure; 19. and (5) confining pressure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

For convenience of explanation, in this specification, an upward direction in fig. 1 is defined as "upper" of the shallow water flow acoustic wave test device, and a downward direction in fig. 1 is defined as "lower" of the shallow water flow acoustic wave test device. The direction of the left hand when the reader is facing FIG. 1 is defined as "left", and the direction of the right hand when the reader is facing FIG. 1 is defined as "right".

Please refer to fig. 1. The embodiment of the application provides a shallow water flow sound wave testing device, and the device includes reation kettle 1, sound wave test component, warm pressure test component 5, thrust subassembly 6, annotates liquid subassembly 7 and control part 8.

Wherein, reation kettle 1 is equipped with test cabin 2. The reaction vessel 1 extends along the length direction thereof. The side surface of the reaction kettle 1 extending along the length direction can apply confining pressure 19 to the test chamber 2. The confining pressure 19 is added, so that the stress condition of shallow water flow can be better simulated, and the experimental result is closer to the actual condition. The acoustic wave testing assembly is arranged in the testing cabin 2 and comprises an emitting piece 3 and a receiving piece 4. The emitting piece 3 and the receiving piece 4 are arranged on the inner wall of the reaction kettle 1. The line between the emitting element 3 and the receiving element 4 is perpendicular to the length direction. The warm-pressing testing component 5 is arranged in the testing cabin 2 and used for obtaining the pressure and the temperature in the testing cabin 2. The thrust assembly 6 is arranged at one end of the reaction kettle 1 extending along the length direction. At least part of the thrust assembly 6 extends into the test chamber 2. The liquid injection assembly 7 is communicated with the test cabin 2 and is used for injecting liquid into the test cabin 2. The control part 8 with the transmitter 3, receive piece 4, warm pressure test subassembly 5, thrust subassembly 6, annotate liquid subassembly 7 electricity and be connected, be used for control the transmitter 3, receive piece 4, warm pressure test subassembly 5, thrust subassembly 6, the switching of annotating liquid subassembly 7 are used for acquireing the sound wave information of transmitter 3 transmission the sound wave information of receiving 4 receipts the warm pressure and the temperature information that the test subassembly 5 acquireed. The acoustic information includes information such as acoustic velocity, amplitude, period, frequency, phase, wavelength, etc.

The shallow rivers sound wave testing arrangement that this application embodiment provided can change the pressure in the test chamber 2 through setting up reation kettle 1, the thrust subassembly 6 that is located reation kettle 1 along the one end of length direction extension that can exert confined pressure 19. By arranging the sound wave testing component and the temperature and pressure testing component 5, acoustic response of the shallow water flow under different pressure changes can be tested, the influence rule of the shallow water flow on acoustic characteristics can be researched, and a theoretical basis is established for establishing a shallow water flow geological disaster acoustic prediction model and further analyzing the risk of drilling in the shallow water flow.

The shallow water flow sound wave testing device provided by the embodiment of the application carries out indoor testing, and by measuring the acoustic parameter change of the sound wave signal after longitudinal waves penetrate through shallow water flow, the pressure characteristic of the shallow water flow and the mechanical characteristics of a stratum can be indirectly known and demonstrated, so that a guiding basis is provided for predicting the geological disasters of the shallow water flow in the oil-gas exploration process. Therefore, a risk control method system is established for the shallow water flow blowout accident, a shallow water flow blowout accident model for deep water shallow drilling operation is established, the risk of the shallow water flow blowout accident is reduced to an acceptable level, and the loss and the risk of offshore development can be greatly reduced. Therefore, it is of great significance to develop a set of device capable of meeting the requirements of the superficial water flow sound wave test under the high-pressure environment.

In the present embodiment, the test chamber 2 may be provided with a plurality of warm-pressure test surfaces 51, for example, four warm-pressure test surfaces, in a direction perpendicular to the length direction of the reaction vessel 1. The four warm-pressing test surfaces 51 are distributed at the upper part, the middle lower part and the lower part in the test chamber 2 so as to monitor the temperature and the pressure in the test chamber 2 to the maximum extent. The temperature and pressure values of different stratum depths can be measured by arranging a plurality of temperature and pressure testing surfaces 51, so that the acquired testing data are more accurate. A plurality of warm pressure test points can be arranged on each warm pressure test surface 51. The warm-pressing test component 5 can be arranged on the warm-pressing test point, and the result (temperature and pressure) measured by the warm-pressing test component is output to the control part 8 through the acquisition module. The warm-pressing test surface 51 may be a net structure, and the warm-pressing test component 5 is placed on the net. As shown in fig. 4, a plurality of the warm-pressing test assemblies 5, for example, 21 warm-pressing test assemblies, may be disposed on each of the warm-pressing test surfaces 51. The warm-pressing test assemblies 5 can be uniformly distributed at intervals. In order to obtain accurate acoustic wave test results, the plane of the connecting line of the emitting piece 3 and the receiving piece 4 is different from the plane of the warm-pressing test surface 51, so that the warm-pressing test assembly 5 does not influence the acoustic wave information received by the receiving piece 4.

In the embodiment of the present application, the warm-pressure test assembly 5 includes a temperature test element and a pressure test element. The pressure test element may be a pressure sensor and the temperature test element may be a temperature sensor. The pressure testing element and the temperature testing element are arranged, so that the acoustic wave state of shallow water flow under a high pressure state can be obtained, and stratum mechanical parameters can also be obtained, and the device is suitable for synchronously measuring mechanical and acoustic wave information of different types of shallow water flow under different pressure environments. The shallow water flow sound wave testing device provided by the embodiment of the application can test the acoustic response of the variable pressure state of the shallow water flow, test and evaluate the influence of the pressure of the shallow water flow on sound wave signals, further study the influence of the pressure on the characteristics of the shallow water flow, and provide a guidance basis for predicting the geological disasters of the shallow water flow in the oil-gas exploration process.

The shape of the reaction vessel 1 and the test chamber 2 is not limited in the embodiments of the present invention, and may be various shapes such as a rectangular parallelepiped shape and a cylindrical shape. For convenience of explanation, in the embodiment of the present application, it is preferable that the reaction vessel 1 has a cylindrical shape and the test chamber 2 has a cylindrical shape. The reaction vessel 1 has a high pressure-bearing property, and can withstand a pressure of 30 MPa, for example. The reactor 1 may be used to simulate shallow formation pressures at a water depth of 3000 meters.

In the present embodiment, the emitter element 3 and the receiver element 4 may be disposed on an inner wall surface of the reaction vessel 1. The emitter element 3 and the receiver element 4 are both directed towards the centre line of the test chamber 2. The emitting element 3 and the receiving element 4 are oppositely oriented and form an included angle of 180 degrees, so that the acoustic information in the test chamber 2 can be monitored to the maximum extent. Specifically, a plurality of the acoustic wave test assemblies may be arranged at intervals along the length direction of the reaction kettle 1.

In the embodiment of the present application, the emitter element 3 and the receiver element 4 may be periodic test probes with the same duty cycle. Three the emitter 3 is followed reation kettle 1's even interval of length direction sets up on reation kettle 1 left inner wall, and is three receive piece 4 and follow reation kettle 1's even interval of length direction sets up on reation kettle 1 right side inner wall. The three emitters 3 start to operate simultaneously, which makes it possible to obtain more accurate test results. A protective shell may be arranged outside the emitting element 3 and the receiving element 4 to protect the emitting element 3 and the receiving element 4. In addition, the left side and the right side inner wall of reaction kettle 1 may also be provided with grooves for mounting acoustic wave testing components. The groove and the protective shell can enable the acoustic testing assembly to be installed in a sealing mode. The emitting element 3 and the receiving element 4 are also connected with a wire, and are connected with the control part 8 through the wire.

In the present embodiment, as shown in fig. 7, the side of the reaction vessel 1 can apply a variable confining pressure 19 to the inside of the test chamber 2. The hydraulic oil is pumped into the oil chamber through the oil pump, and then the pressure is acted on the periphery of the soil body in the test chamber 2 through the rubber interlayer, so that the confining pressure 19 is applied to the test chamber 2. The confining pressure 19 can be adjusted in size.

In the present embodiment, as shown in fig. 3, the thrust assembly 6 includes a push plate 61, a push rod 62, a sealing member 63, and a loading member 64. The push plate 61 is disposed in the test chamber 2. The cross section of the push plate 61 is the same as that of the test chamber 2. For example, the push plate 61 may be a circular plate with a radius equal to the radius of the test chamber 2, and the circular plate extends into the test chamber 2 to compact the soil downward. The push rod 62 is connected with the push plate 61. The push rod 62 extends along the length direction of the reaction vessel 1 and applies an axial pressure 18 to the test chamber 2. The sealing member 63 is arranged at the joint of the push rod 62 and the reaction kettle 1 and used for sealing the test chamber 2. The loading member 64 is connected to the push rod 62 for providing power to the push rod 62. The loading member 64 may employ hydraulic control of the axial pressure 18.

In the present embodiment, the liquid injection assembly 7 includes a liquid inlet 10, a liquid inlet line, a liquid tank 71, a first valve 72, a high-pressure injection pump 73, and a flow control element 74. The liquid inlet 10 is arranged at the bottom of the reaction kettle 1 and is arranged at the bottom for convenient operation. The liquid inlet line is connected with the liquid inlet 10. The liquid tank 71 is located at one end of the liquid inlet line away from the liquid inlet 10. The liquid in the liquid tank 71 may be seawater. The first valve 72, the high-pressure injection pump 73 and the flow control element 74 are arranged on the liquid inlet pipeline from upstream to downstream in sequence and are positioned between the liquid tank 71 and the liquid inlet 10. The high-pressure injection pump 73 is used for pressurizing the liquid from the liquid tank 71, so that the liquid is rapidly injected into the test chamber 2. The flow control element 74 may be a liquid flow meter for controlling the amount of liquid to be injected into the reactor 1, and may also control the flow rate of liquid into the loading port 10, the instantaneous amount and the cumulative amount of liquid to be injected.

Since different formations have different properties, the nature and parameters of the shallow water flow determine the amount of injected liquid in order to simulate the conditions of the shallow water flow. In actual operation, the injected liquid amount is adjusted according to the simulated shallow water flow property required in practice. The outlet of the liquid tank 71 may be provided with a first valve 72 and a pressure sensor of the liquid tank 71, the first valve 72 is used for controlling the opening and closing of the liquid tank 71, and the pressure sensor of the liquid tank 71 is used for displaying the pressure of the gas coming out from the outlet of the liquid tank 71.

For ease of understanding, the gas injection process of the embodiments of the present application is described with reference to fig. 6. The liquid tank 71 is first opened to inject the liquid. The liquid enters the high-pressure injection pump 73 through the liquid inlet pipeline, and the amount of the injected liquid is controlled by the flow control element 74 after pressurization, and the liquid is injected into the test chamber 2 through the liquid inlet 10. In order to control the liquid in the liquid inlet line more optimally and safely, elements such as valves, pressure gauges and the like can be arranged at multiple positions of the liquid inlet line, which is not limited in this application.

In particular, a one-way valve may be provided between the flow control element 74 and the loading port 10 to prevent liquid in the test chamber 2 from entering the flow control element 74, which may cause the flow control element 74 to be damaged. As shown in fig. 5, a liquid outlet 11 may be disposed at the bottom of the reaction kettle 1, and is used for discharging or recovering the liquid in the test chamber 2 after the superficial water flow acoustic wave test is completed, and the liquid outlet is disposed at the bottom for convenient operation. The testing device can also be provided with a liquid recovery assembly. The liquid outlet 11 may be connected to a liquid recovery unit to realize the liquid recovery.

In the embodiment of the present application, the reaction vessel 1 is externally provided with a support frame 9 for placing the reaction vessel 1. The thrust assembly 6 is connected with the support frame 9 and is positioned above the reaction kettle 1. The reaction kettle 1 can be provided with a cover body 12. The cover 12 is provided with a flange hole 13 for mounting the cover 12 to the reaction vessel 1. Specifically, 12 flange holes 13 may be uniformly distributed on the outer edge of the cover 12. Correspondingly, the reaction kettle 1 may be provided with a flange interface 17 matching with the flange hole 13. The flange connects the cover body 12 and the reaction kettle 1 together through the flange hole 13 and the flange interface 17.

As shown in fig. 2, the cover 12 may further have a first through hole 14, a second through hole 15, and a third through hole 16, where the first through hole 14 is used for a lead wire connected to the emitter 3 to pass through, the second through hole 15 is used for a lead wire connected to the receiver 4 to pass through, and the third through hole 16 is used for a lead wire connected to the warm-pressing testing assembly 5 to pass through. The emitting piece 3, the receiving piece 4 and the warm-pressing test assembly 5 are electrically connected to the control part 8 through wires respectively. The first through hole 14, the second through hole 15 and the third through hole 16 may also extend into the wall surface of the reaction vessel 1 according to design requirements. Specifically, the flange hole 13 may be provided at an outer edge of the cover 12, and the first through hole 14, the second through hole 15, and the third through hole 16 may be provided at an inner edge of the cover 12. That is, the flange hole 13 is farther from the center of the cover body 12 than the first through hole 14, the second through hole 15, and the third through hole 16.

In the embodiment of the present application, the control unit 8 may be a computer provided with an analog signal data acquisition module and data acquisition control software, but the control unit 8 may also be in other forms, and the present application is not limited to this specific form. The control section 8 can perform measurement and control of temperature, pressure, and acoustic information during the test. The control part 8 controls the emitter 3 to emit sound waves through the first through hole 14 by using a wire; the receiving member 4 transmits the acoustic wave information to the control portion 8 through the second through hole 15 with a wire; the warm-pressing test assembly 5 transmits temperature and pressure information to the control part 8 through the third through hole 16 by using a lead.

In a specific application scenario, when the shallow water flow acoustic wave test device provided by the embodiment of the application is applied to a shallow water flow acoustic response test, the shallow water flow acoustic response test device has the following test steps:

1. and placing the configured shallow stratum soil body in the test chamber 2.

2. The cover body 12 is fixed with the reaction kettle 1, and the soil body in the test chamber 2 is compacted by the push plate 61 of the thrust assembly 6.

3. The side of the reaction vessel 1 is used to apply an ambient pressure 19 to the test chamber 2.

4. The emitter element 3 and the receiver element 4 are opened and recording is started.

5. And injecting liquid into the test chamber 2, and monitoring the temperature and pressure state in the test chamber 2 in real time by using the temperature and pressure test component 5.

6. And under different pressure stable states, multiple times of sound wave information is obtained through testing. (the pressure can be varied from 10 to 30 MPa, and 20 groups of data can be tested)

7. After the test is finished, the liquid outlet 11 is opened to discharge the liquid.

8. And opening the test chamber 2, pouring out the simulated soil body, and discharging engineering liquid.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

Any numerical value recited herein includes all values from the lower value to the upper value, in increments of one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims

1. a shallow water current sound wave testing device, is characterized in that, comprises:

A reaction kettle provided with a test chamber, the reaction kettle extends along its length direction; the side of the reaction kettle extending along the length direction can apply confining pressure to the test chamber;

The acoustic wave test assembly set in the test chamber includes a transmitter and a receiver, the transmitter and receiver are located on the inner wall of the reactor, and the connection between the transmitter and receiver is connected to the length of the vertical direction;

a temperature and pressure test assembly arranged in the test chamber for obtaining the pressure and temperature in the test chamber;

a thrust assembly located at one end of the reaction kettle extending along the length direction, at least part of the thrust assembly protrudes into the test chamber;

a liquid injection assembly communicated with the test chamber, for injecting liquid into the test chamber;

A control part, the control part is electrically connected with the transmitting part, the receiving part, the temperature and pressure test component, the thrust component, and the liquid injection component, and is used to control the transmitting component, the receiving part, the temperature and pressure test component, the thrust component, the injection component The opening and closing of the liquid component is used to obtain the acoustic wave information emitted by the transmitting member, the acoustic wave information received by the receiving member, and the pressure and temperature information obtained by the thermobaric testing assembly.

2. The shallow water flow acoustic wave test device according to claim 1, wherein the test chamber is provided with a plurality of temperature and pressure test surfaces perpendicular to the length direction of the reactor, and each of the temperature and pressure tests A plurality of the temperature and pressure test components are arranged on the surface; the plane where the connection line between the transmitter and the receiver is located is a different plane from the temperature and pressure test surface.

3. The shallow water flow acoustic wave test device according to claim 1, wherein a plurality of the acoustic wave test assemblies are arranged at intervals along the length direction of the reactor; the temperature and pressure test assemblies comprise a temperature test element and a pressure test element.

4. The shallow water flow acoustic wave test device according to claim 1, wherein the test chamber is provided with four temperature and pressure test surfaces at intervals perpendicular to the length direction of the reactor, and each of the The temperature and pressure test surface is provided with a plurality of uniformly distributed temperature and pressure test components; the three emitting parts are arranged on the inner wall of the left side of the reaction kettle at uniform intervals along the length direction of the reaction kettle, and the three The receiving parts are arranged on the inner wall of the right side of the reaction kettle at uniform intervals along the length direction of the reaction kettle.

5. shallow water flow acoustic wave testing device according to claim 1, is characterized in that, the inner wall of described reaction kettle is provided with the groove for installing described acoustic wave test assembly; Protective shell; both the transmitting part and the receiving part are facing the center line of the test chamber, the direction of the transmitting part and the receiving part are opposite, and the included angle is 180°.

6. The shallow water current acoustic wave testing device according to claim 1, wherein the thrust assembly comprises:

a push plate arranged in the test cabin, the section of the push plate is the same as that of the test cabin;

a push rod connected with the push plate, the push rod extending along the length of the reaction kettle;

a seal arranged at the junction of the push rod and the reaction kettle for sealing the test chamber;

A loading piece connected with the push rod is used to provide power for the push rod.

7. The shallow water flow acoustic wave testing device according to claim 1, wherein the liquid injection assembly comprises:

a liquid inlet located at the bottom of the reactor;

a liquid inlet pipeline connected to the liquid inlet;

a liquid tank at one end of the liquid inlet line away from the liquid inlet;

A first valve, a high-pressure injection pump, and a flow control element located downstream of the liquid tank, the first valve, the high-pressure injection pump, and the flow control element are sequentially arranged on the liquid inlet line from upstream to downstream, and are located in the liquid between the tank and the liquid inlet.

8 . The shallow water flow acoustic wave testing device according to claim 7 , wherein a one-way valve is provided between the flow control element and the liquid inlet; and a liquid outlet is provided at the bottom of the reactor. 9 .

9 . The shallow water flow acoustic wave testing device according to claim 1 , further comprising a support frame, and the reaction kettle is placed on the support frame; the thrust assembly is connected to the support frame and is located at the above the reaction kettle; the reaction kettle is provided with a cover body, and the cover body is provided with a flange hole for installation.

10. The shallow water flow acoustic wave testing device according to claim 9, wherein the cover body is further provided with a first through hole, a second through hole and a third through hole; the first through hole is used for The wire connected to the transmitting part passes through, the second through hole is used for the wire connected to the receiving part to pass through, and the third through hole is used for the wire connected to the temperature and pressure test assembly to pass through , the transmitting part, the receiving part and the temperature and pressure test assembly are respectively electrically connected to the control part through wires.