CN107830961B - A kind of underground hydrofracturing induces crack ultrasonic wave dynamic imaging device and system - Google Patents
A kind of underground hydrofracturing induces crack ultrasonic wave dynamic imaging device and system Download PDFInfo
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- CN107830961B CN107830961B CN201711276015.0A CN201711276015A CN107830961B CN 107830961 B CN107830961 B CN 107830961B CN 201711276015 A CN201711276015 A CN 201711276015A CN 107830961 B CN107830961 B CN 107830961B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0004—Force transducers adapted for mounting in a bore of the force receiving structure
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
It includes tube body, ultrasound imaging unit and driving mechanism to induce crack ultrasonic wave dynamic imaging device and system, imaging device the present invention provides a kind of underground hydrofracturing.Tube body has the installation cavity surrounded by side wall, and side wall is provided with the sound transmitting window for blocking water and being penetrated for ultrasonic wave.Ultrasound imaging unit includes at least one ultrasonic probe, and ultrasound imaging unit is movably installed on installation cavity, and the detection direction of ultrasonic probe is towards sound transmitting window.Driving mechanism is installed on installation cavity, and driving mechanism is sequentially connected with ultrasonic probe to drive axial direction and/or circumferential movement of the ultrasonic probe along tube body.The present apparatus does not have to cable, and imaging data downhole stored is read on well.Compared to traditional packing element impression method, not only time saving and energy saving, efficiency greatly improves；Avoid the risk for being imprinted on and being ground off by hole wall when the trace on stamp packing element surface carries brill；More accurate hydraulic pressure especially can be also obtained in the case where drilling depth is larger, borehole conditions are complicated induces crack imaging data.
Description
Technical field
The present invention relates to geostress survey technical fields, and it is super to induce crack in particular to a kind of underground hydrofracturing
Sound wave dynamic imaging device and system.
Background technology
Currently, crustal stress is the primary stress being present in earth's crust rock mass and the important physical attribute ginseng of solid earth
One of number.Crustal stress is to cause the root strength of rock mass deformation, unstability and destruction, and influence oil, shale gas, hot dry rock etc.
The important parameter of deep energy extraction.The measurement for thus carrying out crustal stress is operated in seismic mechanism research, energy extraction, mine tunnel
Road design, large-scale dam dam foundation construction etc. have important science and Practical significance.
The most important method of geostress survey is hydraulic fracturing.Hydraulic fracturing geostress survey is by the borehole
One section of rock open-hole is insulated, highly pressurised liquid is injected to packing section, makes hole wall fracturing section rock mass that rupture occur to determine that crustal stress is big
A kind of small and direction method.Party's law theory is ripe, it is easy to operate, fathom it is big, at low cost, at present in worldwide
Inside it is widely used.
Complete hole wall rock mass will be generated after hydraulic fracturing two it is symmetrical, perpendicular to hole axle, parallel in 180 °
Induction crack, the azimuth that this pair induces crack then represents the direction of maximum horizontal principal stress.Obtain maximum horizontal master
The direction of stress is the important content for carrying out drilling hydraulic fracturing geostress survey.Existing acquisition maximum horizontal principal stress side
To method be mainly impression method, i.e., the trace height for inducing crack is stamped in the vulcanized rubber on its surface using stamp packing element
On, this method simple, intuitive, but also have disadvantages that mainly have：Time-consuming and laborious, inefficiency, each lower bore is only capable of obtaining
The directional information of 1-2 test point；The trace for being imprinted on stamp packing element surface is easy to be ground off by hole wall in drilling process；For
The larger drilling of stress value, it is also bigger due to inducing the stress that crack is opened again, it is difficult clearly to stamp and will induce
Crack trace.Above-mentioned several disadvantages influence experimental result in the case of the larger borehole conditions complexity of drilling depth tighter
Weight.
Invention content
One of the objects of the present invention is to provide a kind of underground hydrofracturing induce crack ultrasonic wave dynamic imaging device and
System, to obtain the azimuth that hole wall induces crack.
At least one of in order to solve the above-mentioned technical problem, the present invention provides following technical schemes：
A kind of underground hydrofracturing induction crack ultrasonic wave dynamic imaging device, including：
Tube body, the tube body has the installation cavity surrounded by side wall, and the side wall is provided with and blocks water and for ultrasonic wave
The sound transmitting window of transmission；
Ultrasound imaging unit, the ultrasound imaging unit include at least one ultrasonic probe, and the ultrasound imaging unit can
It is movably arranged in the installation cavity, the detection direction of the ultrasonic probe is towards the sound transmitting window；
Driving mechanism, the driving mechanism is installed on the installation cavity, and the driving mechanism is passed with the ultrasonic probe
Dynamic connection is to drive axial direction and/or circumferential movement of the ultrasonic probe along tube body.
Further, in the alternative embodiment of the present invention, the underground hydrofracturing induce crack ultrasonic wave dynamic at
As device further includes central shaft, ultrasound imaging unit further includes mounting base, and the ultrasonic probe is installed on the mounting base, described
Mounting base is movably sheathed on the periphery of the central shaft, and the driving mechanism is sequentially connected with the mounting base；Preferably,
The central shaft has axially extending bore；Preferably, the central shaft is made of metal material.
Further, in the alternative embodiment of the present invention, the driving mechanism includes active straight spur gear, driven
Straight spur gear and power plant；The active straight spur gear and the power output portion transmission of the power plant connect
It connects, the driven straight spur gear is connect with the central axle threads to form lead screw pair, and the driven straight tooth column tooth
Wheel is engaged with the active straight spur gear；The driven straight spur gear is with the mounting base circumferential and/or axial
It is fixedly connected.
Further, in the alternative embodiment of the present invention, the driven straight spur gear is with the mounting base in week
It is fixedly connected with to axial.
Further, in the alternative embodiment of the present invention, the power plant is motor；In the installation cavity filling by
Insulate silicone oil；Preferably, the motor is DC brushless motor.
Further, in the alternative embodiment of the present invention, the installation cavity further includes a battery installation cavity, the battery
Battery is installed, the battery is connect with the ultrasonic probe and motor counter electrode in installation cavity.
Further, in the alternative embodiment of the present invention, the ultrasonic wave dynamic imaging device further includes pressure switch,
The pressure switch has pressure input unit and electric signal output portion, and the pressure input site is in outside the tube body, the electricity
Signal output section is located in the tube body and is connect with the motor and ultrasonic probe counter electrode, and the pressure switch is configured
Start the motor and ultrasonic probe when reaching preset value at the pressure for receiving liquid in drilling when pressure input unit.
Further, in the alternative embodiment of the present invention, the ultrasonic probe includes that ultrasonic transmitter and reception are changed
Energy device, the energy converter that receives are configured to receive the ultrasonic wave letter for being sent out by the ultrasonic transmitter and being reflected back by the borehole wall
Number；Preferably, described to receive the energy converter that energy converter is piezo crystal.
Further, in the alternative embodiment of the present invention, the quantity of the ultrasonic probe is 2, the sound transmitting window edge
Circumferentially disposed one week of the tube body；Preferably, the detection direction of 2 ultrasonic probes is along the radial direction of the tube body
Outward and angle is 180 °.
Further, further include that appearance line linkage unit and slip ring, the slip ring are arranged in the alternative embodiment of the present invention
In the periphery of the central shaft and it is fixed in the shell, the appearance line linkage unit is in hollow slim-lined construction on the whole,
Its internal accommodating cavity with accommodating electric lead；The appearance line linkage unit is in rigidity radially and length can in the axial direction
Become；Described one end for holding line linkage unit is with the slip ring axial restraint and is circumferentially slidably connected, the appearance line linkage unit
The other end is fixedly connected with the mounting base.
Further, in the alternative embodiment of the present invention, the slip ring has the annular groove around the central shaft,
Anode ring and cathode ring are fixed in the annular groove, have between the anode ring and the cathode ring interval and it is insulated from each other
Setting；The end set being connect with the appearance line linkage unit for holding line linkage unit has positive sliding block and cathode to slide
Block；The anode sliding block is fixed and is slidably connected in the circumferential in axially and radially upper relative position with the anode ring；
The cathode sliding block is fixed and is slidably connected in the circumferential in axially and radially upper relative position with the cathode ring.
Further, in the alternative embodiment of the present invention, the opening of the annular groove is provided with axial limiting portion,
The end being connect with the appearance line linkage unit for holding line linkage unit is in T fonts substantially, which has radially
Outside annular flange, the annular groove limit the degree of freedom of the annular flange with the axial limiting portion jointly, so that should
Flange is in axial restraint and circumferential movable.
Further, in the alternative embodiment of the present invention, the opening width of the annular groove links with the appearance line
The radial dimension of component is adapted, substantially stationary radially to limit the appearance line linkage unit and the slip ring.
Further, in the alternative embodiment of the present invention, the positive counter electrode of the anode ring and battery connects, institute
Cathode ring is stated to connect with the cathode counter electrode of the battery.
Further, it in the alternative embodiment of the present invention, is equipped with and institute in the accommodating cavity for holding line linkage unit
State motor and the positive electric lead and negative electricity conducting wire of ultrasonic probe counter electrode connection, positive electric lead electricity corresponding with positive sliding block
Pole connects, and negative electricity conducting wire is connect with cathode sliding block counter electrode.
Further, in the alternative embodiment of the present invention, the appearance line linkage unit includes the first spool and the second line
Pipe, first spool is connect with the slip ring and the annular flange is located at the one end of first spool, and described the
The other end of one spool is slidably received in the tube chamber of second spool, and second spool is fixed with the mounting base
Connection.
The present invention also provides a kind of hydrofracturings to induce crack ultrasonic imaging system, including any of the above-described kind of mine water
It presses fracturing to induce crack ultrasonic wave dynamic imaging device, further includes ultrasonic signal processing circuit, the ultrasonic signal processing
Circuit is configured to convert ultrasonic signal to the image information for inducing slight crack.
The beneficial effects of the invention are as follows：The present invention induces crack ultrasonic wave by the underground hydrofracturing that above-mentioned design obtains
Dynamic imaging device and system, in use, driving mechanism can drive ultrasonic probe in tube body along the axial direction of tube body and/or week
It is moved to movement, ultrasonic probe can may pass through the ultrasonic signal of sound transmitting window by transmitting-receiving, can be obtained by ultrasonic imaging technique
The case where taking the borehole wall to induce crack.It is not only time saving and energy saving compared to traditional impression method, it is efficient；It avoids using tradition print
When modulus method, it is imprinted on the risk that the trace on stamp packing element surface is ground off in drilling process by hole wall；Even if drilling depth it is larger,
More accurate data can be obtained in the case of borehole conditions complexity.Moreover, ultrasonic probe can be induced not influencing the borehole wall
Under the premise of crack, is moved towards multiple directions, to obtain the directional information of more test points, bore the test point that can be obtained down every time
Directional information can expand to unlimited (being generally only 1-2 using impression method).
Further, the present apparatus does not use Acquisition Instrument on cable connection well to pop one's head in Acoustic, imaging data underground
Real-time storage is read on well.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is that the underground hydrofracturing provided in an embodiment of the present invention with boring pressure regulating device induces crack ultrasonic wave
The schematic diagram of dynamic imaging device；
Fig. 2 is the signal that underground hydrofracturing provided in an embodiment of the present invention induces crack ultrasonic wave dynamic imaging device
Figure；
Fig. 3 is the partial enlarged view of Fig. 2；
The schematic diagram of Fig. 4 boring pressure regulating devices provided in an embodiment of the present invention.
Icon：S1- top connections；S2- battery installation cavitys；S4- slip rings；S41- anode sliding blocks；S42- cathode sliding blocks；S43- axis
To limiting section；S5- holds line linkage unit；The first spools of S51-；S511- anode rings；S512- cathode rings；S513- annular flanges；
The second spools of S52-；S6- ultrasonic probes；S7- tube bodies；S71- sound transmitting windows；S8- active straight spur gears；The driven straight-tooth circles of S9-
Stud wheel；S10- power plants；S11- pressure balancing pistons；S12- fuel feeding valves；S13- gate gurgle valves；S14- pressure switches；S15-
Central shaft；S16- lower contacts；S17- pressure chambers；S18- driving members.
Specific implementation mode
To keep the purpose, technical scheme and advantage of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
The every other embodiment that domain those of ordinary skill is obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit and wants below
The scope of the present invention of protection is sought, but is merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained without creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, do not indicate or imply the indicated equipment or element must have a particular orientation, with spy
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be direct phase
Even, can also can be indirectly connected through an intermediary that the interaction of the connection or two elements inside two elements is closed
System.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood as the case may be
Meaning.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Embodiment
As shown in Figure 1, present embodiments providing a kind of underground hydrofracturing induction crack with boring pressure regulating device
Ultrasonic wave dynamic imaging device comprising underground hydrofracturing induces crack ultrasonic wave dynamic imaging device and boring pressure is adjusted
Device.Underground hydrofracturing induces crack ultrasonic wave dynamic imaging device and boring pressure regulating device is shown in Fig. 2 and Fig. 4 institutes respectively
Show.Fig. 2 and Fig. 4 is left and right two parts of Fig. 1 respectively.In the present embodiment, underground hydrofracturing induces crack ultrasonic wave dynamic
Imaging device and boring pressure regulating device share an a tube body S7 and central shaft S15.In other implementations, underground hydraulic pressure
Fracturing, which induces crack ultrasonic wave dynamic imaging device, to be combined with the boring pressure regulating device of other structures.Boring pressure
Regulating device, which combines, to induce the combination of crack ultrasonic wave dynamic imaging device with the underground hydrofracturing of other structures.
Crack ultrasonic wave dynamic imaging first is induced to underground hydrofracturing provided in this embodiment with reference to Fig. 2 and Fig. 3
Device is described.
A kind of underground hydrofracturing induce crack ultrasonic wave dynamic imaging device, including tube body S7, ultrasound imaging unit with
And driving mechanism.
Wherein, the both ends of tube body S7 are respectively arranged with top connection S1 and lower contact S16.Tube body S7 has to be surrounded by side wall
We define it as installation cavity (close to top connection S1) for cavity, the wherein left part of cavity, right part we define it and be
Pressure balance chamber (close to lower contact S16).
Surround installation cavity side wall some be sound transmitting window S71, sound transmitting window S71 blocks water and is penetrated for ultrasonic wave.
Optional polytetrafluoroethylene (PTFE) is as the material for preparing sound transmitting window S71.In the present embodiment, sound transmitting window S71 is circumferentially disposed along tube body S7
Cirque structure.
Ultrasound imaging unit includes at least one ultrasonic probe S6, and ultrasound imaging unit is movably installed on installation cavity,
The detection direction of ultrasonic probe S6 is towards sound transmitting window S71.
Further, in the alternative embodiment of the present invention, ultrasonic probe S6 includes ultrasonic transmitter and reception transducing
Device receives energy converter and is configured to receive the ultrasonic signal for being sent out by ultrasonic transmitter and being reflected back by the borehole wall；Preferably,
Receive the energy converter that energy converter is piezo crystal.
Ultrasonic transmitter and reception energy converter can be arranged in a one-to-one correspondence, can also a ultrasonic transmitter correspondence
At least two receive energy converter.Such as by the setting of ultrasonic transmitter in centre, and multiple reception energy converters circumferentially between
Every setting, you can the information in the multiple orientation of the detection borehole wall.
Further, in the alternative embodiment of the present invention, the quantity of ultrasonic probe S6 is 2.Preferably, 2 ultrasounds
Pop one's head in S6 detection direction along tube body S7 radially outward and angle is 180 °.
Driving mechanism is installed on installation cavity, and driving mechanism is sequentially connected with ultrasonic probe S6 to drive the edges ultrasonic probe S6
The axial direction and/or circumferential movement of tube body S7.
In other words, driving mechanism may be configured to driving ultrasonic probe S6 only along the axial movement of tube body S7, also may be used
To be configured to driving ultrasonic probe S6 only along the circumferential movement of tube body S7, driving ultrasonic probe S6 is can be configured to along pipe
The axial and circumferential of body S7 can move.In the present embodiment, driving mechanism may be configured to the edges driving ultrasonic probe S6
The axial and circumferential of tube body S7 can move.More multi-faceted borehole wall information can be obtained in this way.
It is possible to further install gyro-magnetic compass in installation cavity to record the orientation of ultrasonic probe S6, in order to obtain
Know the orientation in the crack monitored.
Further, in the alternative embodiment of the present invention, underground hydrofracturing induces crack ultrasonic wave dynamic imaging dress
It further includes central shaft S15 to set, and ultrasound imaging unit further includes mounting base, and ultrasonic probe S6 is installed on mounting base, and mounting base can live
It is sheathed on the periphery of central shaft S15 dynamicly, driving mechanism is sequentially connected with mounting base.Preferably, central shaft S15 has axial logical
Hole.Further, in the present embodiment, central shaft S15 is made of metal material.Compared to flexible pipe, central shaft S15 belongs to rigid
Property pipe, not only bearing capacity is more preferable, but also can be as the guide frame of mounting base.
Further, in the alternative embodiment of the present invention, driving mechanism includes active straight spur gear S8, driven straight
Tooth roller gear S9 and power plant S10；The power output portion transmission of active straight spur gear S8 and power plant S10 connects
It connects, driven straight spur gear S9 is threadedly coupled with central shaft S15 to form lead screw pair, and driven straight spur gear S9 and master
Dynamic straight spur gear S8 engagements；Driven straight spur gear S9 is connect with mounting base in circumferential direction and/or axial restraint.It is driven straight
The connection of tooth roller gear S9 and mounting base can with about corresponding with the desired motion mode of ultrasonic probe S6.In this reality
It applies in example, driven straight spur gear S9 is fixedly connected with mounting base in circumferential and axial.
Further, in the alternative embodiment of the present invention, ultrasonic wave dynamic imaging device further includes pressure switch S14,
Pressure switch S14 has pressure input unit and electric signal output portion, and pressure input site is in outside tube body S7, electric signal output position
It is connect in tube body S7 and with motor and ultrasonic probe counter electrode, pressure switch S14 is configured to receive when pressure input unit
Start motor and ultrasonic probe when the pressure of liquid reaches preset value in drilling.
When using this pressure switch S14, if pressure when preset pressure value starts with pressure break is correspondingly arranged, pressure break
It is completed in the same time with imaging function, realizes that certain hole segment length induces the imaging in crack.
Further, the time of ultrasonic imaging be also can be preset, executed in a preset time that can be upon actuation,
Then automatic to terminate.
Further, in the alternative embodiment of the present invention, power plant S10 is motor；Filling is by insulating in installation cavity
Silicone oil.Preferably, in the present embodiment, motor is DC brushless motor.Motor is impregnated in insulation silicone oil.
Further, in embodiment, installation cavity further includes a battery installation cavity S2, and electricity is equipped in battery installation cavity S2
Pond, battery are connect with ultrasonic probe S6 and motor counter electrode.
Further, can also include holding line linkage unit S5 and slip ring S4, slip ring in the alternative embodiment of the present invention
S4 is sheathed on the periphery of central shaft S15 and is fixed in tube body S7, and it is in hollow slim-lined construction to hold line linkage unit S5 on the whole,
Its internal accommodating cavity with accommodating electric lead；It is in rigidity to hold line linkage unit S5 radially and length is variable in the axial direction；
Hold one end of line linkage unit S5 with slip ring S4 axial restraints and be circumferentially slidably connected, holds the other end and peace of line linkage unit S5
Dress seat is fixedly connected.
Further, slip ring S4 has the annular groove around central shaft S15, and anode ring S511 is fixed in annular groove
With cathode ring S512, there are interval and setting insulated from each other between anode ring S511 and cathode ring S512；Hold line linkage unit S5's
There are positive sliding block S41 and cathode sliding block S42 with the end set that line linkage unit S5 is connect is held；Positive sliding block S41 and anode
Ring S511 is fixed and is slidably connected in the circumferential in axially and radially upper relative position；Cathode sliding block S42 and cathode ring
S512 is fixed and is slidably connected in the circumferential in axially and radially upper relative position.
In this way, so that anode sliding block S41 and anode ring S511 is in counter electrode connection status always, but also negative
Pole sliding block S42 and cathode ring S512 is in counter electrode connection status always.Anode ring S511, cathode ring S512, positive sliding block
S41 and cathode sliding block S42 are made of electrically conductive material, such as metal, it is possible to further be copper.Further, annular groove
Opening be provided with axial limiting portion S43, hold line linkage unit S5 with to hold the end that line linkage unit S5 is connect basic
In T fonts, which has annular flange S513 radially, and annular groove limits jointly with axial limiting portion S43 should
The degree of freedom of annular flange S513, so that the flange is in axial restraint and circumferential movable.
Further, the opening width of annular groove is adapted with the radial dimension for holding line linkage unit S5, is held with limiting
Line linkage unit S5 and slip ring S4 are substantially stationary radially.The opening width of annular groove refers to the opening of annular groove in
The radial width of mandrel S15.
When ultrasonic probe S6 is rotated around central shaft S15, holds line linkage unit S5 and also rotated around central shaft S15.And
And hold line linkage unit S5 under the position-limiting action of annular groove, keep relative position to fix in the axial direction with slip ring S4, and hold
Line linkage unit S5 can circumferentially on relative to slip ring S4 slide.
Further, the positive counter electrode of anode ring S511 and battery connects, the cathode pair of cathode ring S512 and battery
Electrode is answered to connect.
Further, hold to be equipped in the accommodating cavity of line linkage unit S5 and be connect with motor and ultrasonic probe S6 counter electrodes
Positive electric lead and negative electricity conducting wire, positive electric lead connect with positive sliding block S41 counter electrodes, negative electricity conducting wire and cathode sliding block S42
Counter electrode connects.
Further, it includes the first spool S51 and the second spool S52, the first spool S51 and slip ring to hold line linkage unit S5
S4 connections and annular flange S513 are located at the one end of the first spool S51, and the other end of the first spool S51 slideably holds
It is placed in the tube chamber of the second spool S52, the second spool S52 is fixedly connected with mounting base.
When axial movements of the ultrasonic probe S6 along central shaft S15, appearance line linkage unit S5 is scalable, the first spool S51
Length positioned at the tube chamber inside points of the second spool S52 can also change.
The present embodiment additionally provides a kind of ultrasonic imaging system, including any of the above-described kind of underground hydrofracturing induces crack
Ultrasonic wave dynamic imaging device further includes ultrasonic signal processing circuit, and ultrasonic signal processing circuit is configured to will be ultrasonic
Wave signal is converted into the image information for inducing crack.
Radiating circuit excitation ultrasonic transmitter work can be set, and place can be digitized by receiving the signal of energy converter acquisition
Reason, corresponding reception can realize that high-precision digitized signal, reception will be realized with Acquisition Circuit with Acquisition Circuit：Preceding storing
Greatly, filtering, automatic gain control, ADC acquisitions etc..Specific calculation system and the circuit being related to belong to the prior art, herein not
It repeats again.
When sound transmitting window S71 is made of polytetrafluoroethylene (PTFE), since polytetrafluoroethylene material bearing capacity is insufficient.Setting drilling
The purpose of pressure-regulating device is primarily to balance installation cavity and the pressure outside tube body S7, avoid sound transmitting window S71 by pressure
Damage.
With reference to Fig. 4, to the present embodiment provides boring pressure regulating devices to be introduced.
Boring pressure regulating device includes mainly pressure balancing piston S11, driving member S18, fuel feeding valve S12 and gate gurgle valve
S13.Boring pressure regulating device and underground hydrofracturing induce crack ultrasonic wave dynamic imaging device share a tube body S7 and
Central shaft S15, central shaft S15 are set in tube body S7 and coaxial with tube body S7.
Cavity is separated into installation cavity and pressure regulating cavity independent of each other by pressure balancing piston S11.
Lower contact S16 is installed on the end of tube body S7, lower contact S16 and tube body S7 and central shaft S15 axial direction dynamic sealings, under
Connector S16 and central shaft S15 surrounds an independent pressure chamber S17.The both ends of driving member S18 respectively with pressure balancing piston S11
And lower contact S16 against.Further, driving member S18 is elastic component.Further, in this embodiment driving member S18 is bullet
Spring.
The oil outlet of fuel feeding valve S12 is connected to pressure chamber S17, and fuel feeding valve S12 is configured to receive control signal and can be to
Pressure chamber S17 injection pressure oil, so that lower contact S16 is far from pressure balancing piston S11.
The oil inlet of gate gurgle valve S13 is connected to pressure chamber S17, and gate gurgle valve S13 is configured to receive control signal and can arrange
Go out the pressure oil in pressure chamber S17, so that lower contact S16 is close to pressure balancing piston S11.
Further, boring pressure regulating device further includes pressure sensor, and pressure sensor is configured to monitoring tube body
The pressure of pressure and installation cavity outside S7 simultaneously exports control signal.
For example, when pipe external pressure is more than the pressure in installation cavity, pressure oil in gate gurgle valve S13 discharge pressure chambers S17 with
Make lower contact S16 close to pressure balancing piston S11, driving member S18 pushes pressure balancing piston S11 to move downward, in installation cavity
Pressure increase.When pipe external pressure is less than the pressure in installation cavity, fuel feeding valve S12 is oily to pressure chamber S17 injection pressures, lower contact
S16 is moved right far from pressure balancing piston S11, dummy piston, and the pressure in installation cavity reduces.Make the pressure in installation cavity with this
Power and pipe external pressure are almost the same.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of underground hydrofracturing induces crack ultrasonic wave dynamic imaging device, which is characterized in that including：
Tube body, the tube body has the installation cavity surrounded by side wall, and the side wall is provided with and blocks water and penetrated for ultrasonic wave
Sound transmitting window；
Ultrasound imaging unit, the ultrasound imaging unit include at least one ultrasonic probe, and the ultrasound imaging unit is movable
Ground is installed on the installation cavity, and the detection direction of the ultrasonic probe is towards the sound transmitting window；
Driving mechanism, the driving mechanism is installed on the installation cavity, and the driving mechanism connects with ultrasonic probe transmission
Connect the axial direction and/or circumferential movement to drive the ultrasonic probe along tube body；
The ultrasonic wave dynamic imaging device further includes central shaft, and ultrasound imaging unit further includes mounting base, the ultrasonic probe
Be installed on the mounting base, the mounting base is movably sheathed on the periphery of the central shaft, the driving mechanism with it is described
Mounting base is sequentially connected；
The driving mechanism includes active straight spur gear, driven straight spur gear and power plant；The active is straight
Tooth roller gear and the power output portion of the power plant are sequentially connected, the driven straight spur gear and the central shaft
It is threadedly coupled to form lead screw pair, and the driven straight spur gear is engaged with the active straight spur gear；It is described from
Dynamic straight spur gear is connect with the mounting base in circumferential direction and/or axial restraint.
2. underground hydrofracturing according to claim 1 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
Stating central shaft has axially extending bore.
3. underground hydrofracturing according to claim 1 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
Central shaft is stated to be made of metal material.
4. underground hydrofracturing according to claim 1 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
Driven straight spur gear is stated to be fixedly connected in circumferential and axial with the mounting base.
5. underground hydrofracturing according to claim 1 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
It is motor to state power plant；Filled with insulation silicone oil in the installation cavity.
6. underground hydrofracturing according to claim 5 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
It is DC brushless motor to state motor.
7. underground hydrofracturing according to claim 5 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
It further includes a battery installation cavity to state installation cavity, and battery, the battery and the ultrasonic probe are equipped in the battery installation cavity
And motor counter electrode connection.
8. underground hydrofracturing according to claim 5 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
It further includes pressure switch to state ultrasonic wave dynamic imaging device, and the pressure switch has pressure input unit and electric signal output portion,
The pressure input site in outside the tube body, the electric signal output portion be located in the tube body and with the motor and ultrasound
Counter electrode of popping one's head in connects, and the pressure that the pressure switch is configured to receive liquid in drilling when pressure input unit reaches pre-
If starting the motor and ultrasonic probe when value.
9. underground hydrofracturing according to claim 1 induces crack ultrasonic wave dynamic imaging device, which is characterized in that institute
It states ultrasonic probe to include ultrasonic transmitter and receive energy converter, the reception energy converter is configured to receive by the ultrasonic wave
The ultrasonic signal that transmitter sends out and is reflected back by the borehole wall.
10. underground hydrofracturing according to claim 9 induces crack ultrasonic wave dynamic imaging device, which is characterized in that
It is described to receive the energy converter that energy converter is piezo crystal.
11. underground hydrofracturing according to claim 9 induces crack ultrasonic wave dynamic imaging device, which is characterized in that
The ultrasonic probe includes a ultrasonic transmitter and multiple reception energy converters.
12. underground hydrofracturing according to claim 1 induces crack ultrasonic wave dynamic imaging device, which is characterized in that
The quantity of the ultrasonic probe is 2, circumferentially disposed one week along the tube body of the sound transmitting window.
13. underground hydrofracturing according to claim 12 induces crack ultrasonic wave dynamic imaging device, which is characterized in that
The detection direction of 2 ultrasonic probes along the tube body radially outward and angle is 180 °.
14. a kind of hydrofracturing induces crack ultrasonic imaging system, which is characterized in that including any according to claim 1-13
Underground hydrofracturing described in induces crack ultrasonic wave dynamic imaging device, further includes ultrasonic signal processing circuit, described
Ultrasonic signal processing circuit is configured to convert ultrasonic signal to the image information for inducing crack.
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| CN108593174B (en) * | 2018-05-08 | 2024-01-02 | 安徽理工大学 | Coal rock mass mining stress monitoring inclusion |
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| CN201148865Y (en) * | 2007-11-27 | 2008-11-12 | 中国石油天然气集团公司 | Ultrasonic imaging logging tool |
| CN105556061A (en) * | 2013-06-24 | 2016-05-04 | 贝克休斯公司 | Fracture evaluation through cased boreholes |
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| JP5668225B1 (en) * | 2013-08-31 | 2015-02-12 | 並木精密宝石株式会社 | Ultrasound endoscope probe |
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| CN105556061A (en) * | 2013-06-24 | 2016-05-04 | 贝克休斯公司 | Fracture evaluation through cased boreholes |
| CN105952444A (en) * | 2016-06-03 | 2016-09-21 | 中国科学院声学研究所 | Acoustic system of ultrasonic imaging logging instrument |
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Effective date of registration: 20180917 Address after: 100081 11 South Road, Haidian District Nationalities University, Beijing Co-patentee after: Institute of acoustics, Chinese Academy of Sciences Patentee after: Institute of Geomechanics, Chinese Academy of Gelogical Sciences Address before: 100000 11 South Road, Haidian District Nationalities University, Beijing Patentee before: Institute of Geomechanics, Chinese Academy of Gelogical Sciences |
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