CN206399896U - A kind of array multi -components underground transient electromagnetic fault detection system - Google Patents
A kind of array multi -components underground transient electromagnetic fault detection system Download PDFInfo
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- CN206399896U CN206399896U CN201720072649.3U CN201720072649U CN206399896U CN 206399896 U CN206399896 U CN 206399896U CN 201720072649 U CN201720072649 U CN 201720072649U CN 206399896 U CN206399896 U CN 206399896U
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Abstract
This disclosure relates to Electromagnetic Testing Technology field, more particularly to a kind of array multi -components underground transient electromagnetic fault detection system, including：Underground detecting module, the detection data for detecting and gathering sleeve pipe to be measured；The underground detecting module includes several detection pipe nipples being sequentially connected with；Remote short section, is connected with the underground detecting module, for receiving the control instruction of host computer, and collects the detection data of each detection pipe nipple, and the detection data is sent to the host computer；Host computer, for receiving the detection data that the remote short section is sent.The disclosure can ensure the stability and correctness of testing result.
Description
Technical field
This disclosure relates to Electromagnetic Testing Technology field, more particularly to a kind of array multi -components underground transient electromagnetic flaw detection system
System.
Background technology
Currently, the most of oil fields of China enter the middle and later periods, in long-term production process, and production casing should due to stratum
There is different degrees of damage, such as undergauge, perforation, corrosion and rupture, so as to cause the borehole wall to collapse in the reasons such as power, chemical attack
Collapse, cause the note in oil field to adopt unbalance and limitation volume increase, had a strong impact on the normal production in each oil field.
It is a kind of method of effectively detection tubing string damage that transient electromagnetic method set, which damages detection,.Its principle is to give electromagnetic probe hair
An ambipolar pumping signal is penetrated, Primary field is formed around probe, Primary field produces whirlpool when running into surrounding medium
Ring is flowed, so as to form secondary magnetic field, the secondary magnetic field decayed in stratum is received during the gap of transmitting pumping signal, is received
Secondary magnetic field be one decay voltage signal, pass through analyze receive signal attenuation law inverting formation conductivity information.
Compared to hardly being disturbed for common electromagnetic method by Primary field, so transient electromagnetic detection method is now by more next
The concern of more people.
However, existing transient electromagnetic method set damages detection technique and relies primarily on eddy current signal in multilayer pipe string damage check
Time response come realize different radial distances set damage analysis.Patent《Multi-functional underground electromagnetic crack detector》
200910254664.X, and paper Fu Y, Yu R, Peng X, et al. Investigation of casing
inspection through tubing with pulsed eddy current[J]. Nondestructive Testing
And Evaluation, 2012,27 (4):353-374. is just proposed through oil pipe and is realized oil pipe outer tube damage check
Method, this method is still mainly, by selecting suitable isochronous surface, to be analyzed using the time domain specification of vortex, so that complete
Into the damage check of two layers of tubing string.The advantage of this method is that apparatus structure is relatively easy, but has the disadvantage multilayer pipe string damage
Detection performance can be under some influence.
《Oil instrument》" dawn, Qiu Jinquan, Jin Xin wait electromagnets flaw detection MID-S well logging skills to the paper delivered
Art set damages detection research [J] oil instruments, 2012,26 (4):4-6. " describes the latest generation MID-S transitions of Russia
Magnetic crack detector, this defectoscope is by setting 2 vertical sondes（Parallel to casing axis）Realize the damage of oil pipe and sleeve pipe
Detection, and using 6 transversal sondes（Perpendicular to casing axis）Probe determine damage shape and symmetry.But MID-S
2 vertical sondes of design at most only possess the ability for distinguishing 2 layers of tubing string degree of impairment, in the hole condition more than 2 layers of tubing string（This
Class hole condition is more common in oil field of the well depth more than 4000 meters, the oil field on ground such as Yumen, Qinghai, Xinjiang of China）, this kind of method
Efficiently and accurately degree of impairment can not be detected.In addition, multiple transversal sondes assembling involved in this article is complicated, visit
Machining accuracy and assembly error that performance depends critically upon mechanical parts are surveyed, even if small mechanical dimensional errors may result in damage
Detect being greatly lowered for performance.
It should be noted that information is only used for strengthening the reason of background of this disclosure disclosed in above-mentioned background section
Solution, therefore can include not constituting the information to prior art known to persons of ordinary skill in the art.
Utility model content
The purpose of the disclosure is to provide a kind of array multi -components underground transient electromagnetic fault detection system, and then at least one
Determine to overcome in degree one or more problem caused by limitation and the defect due to correlation technique.
Other characteristics and advantage of the disclosure will be apparent from by following detailed description, or partially by the disclosure
Practice and acquistion.
According to the one side of the disclosure there is provided a kind of array multi -components underground transient electromagnetic fault detection system, including：
Underground detecting module, the detection data for detecting and gathering sleeve pipe to be measured；The underground detecting module includes suitable
Several detection pipe nipples of secondary connection；
Remote short section, is connected with the underground detecting module, for receiving the control instruction of host computer, and collects each described
The detection data of pipe nipple is detected, the detection data is sent to the host computer；
Host computer, for receiving the detection data that the remote short section is sent.
In a kind of exemplary embodiment of the disclosure, the detection pipe nipple includes housing and is arranged in the housing
Horizontal detection unit and longitudinal probing unit；
The horizontal detection unit includes two and is mutually perpendicular to and axially perpendicular transverse-electromagnetic is popped one's head in the housing；
The longitudinal probing unit includes the longitudinal electromagnetic probe being arranged in an axially parallel mode with the housing.
In a kind of exemplary embodiment of the disclosure, it is provided for fixing the laterally electricity in the detection pipe nipple housing
The machinery frame of magnetic probe and longitudinal electromagnetic probe.
In a kind of exemplary embodiment of the disclosure, the detection pipe nipple housing two ends are respectively arranged with joint positioning key
With the positioning spline matched with the joint positioning key.
In a kind of exemplary embodiment of the disclosure, the joint positioning key is axially set with positioning spline along the housing
It is equipped with an angle.
In a kind of exemplary embodiment of the disclosure, the remote short section includes：
The spread of the rumours message processing module, the control instruction for receiving the host computer sends to the detection pipe nipple and controlled
Instruct and collect, store the detection data of each detection pipe nipple, and the detection data is sent to the host computer；
Temperature monitoring module, for temperature information under real-time monitoring well；
Real-time locating module, the real-time azimuthal for determining the detection pipe nipple；
Underground power supply used module, for being that the underground detecting module and remote short section provide electric energy.
In a kind of exemplary embodiment of the disclosure, the underground power supply used module includes voltage regulation unit and coupled
Two DC-DC power supply units.
In a kind of exemplary embodiment of the disclosure, the fault detection system also includes transmitting device, for by the well
Lower detecting module, remote short section are delivered in the sleeve pipe to be measured of underground；The transmitting device includes：Logging winch, single-core cable with
And head harness；
The logging winch by the single-core cable successively with the head harness, remote short section and underground detecting module
It is connected, for the remote short section and the underground detecting module to be sent into the underground sleeve pipe to be measured.
In a kind of exemplary embodiment of the disclosure, it is provided between the remote sensing pipe nipple upper end and the head harness
Centralizer, the lower end of the underground detecting module is provided with lower centralizer.
In a kind of exemplary embodiment of the disclosure, the logging winch passes through ground acquisition cabinet and the host computer
Communication connection.
In a kind of technical scheme of embodiment of the disclosure, the control instruction of host computer is received using remote short section, and will
Control instruction sends each detection pipe nipple into underground detecting module, and treating detection body using each detection pipe nipple is detected,
And the detection data collected after detection is sent to the remote short section, by remote short section by it is each detection pipe nipple detection data
Sent after being integrated to host computer.When being detected, on the one hand detection pipe nipple can be set according to the number of plies situation of tubing string
Quantity, so as to ensure the stability and correctness of testing result；On the other hand so that use and assemble and be more convenient.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.It should be evident that drawings in the following description are only the disclosure
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 schematically shows a kind of array multi -components underground transient electromagnetic fault detection system in disclosure exemplary embodiment
Composition frame chart；
Fig. 2 schematically shows a kind of array multi -components underground transient electromagnetic fault detection system in disclosure exemplary embodiment
Structural representation；
Fig. 3 schematically shows a kind of detection pipe nipple structural representation in disclosure exemplary embodiment；
Fig. 4 schematically shows a kind of schematic cross-section for detecting pipe nipple in disclosure exemplary embodiment；
Fig. 5 schematically shows transverse-electromagnetic probe combination tangent plane schematic diagram in disclosure exemplary embodiment；
Fig. 6 schematically shows the different longitudinal electromagnetic probe investigative range of electromagnetic parameter in disclosure exemplary embodiment and shown
It is intended to.
Fig. 7 schematically shows a kind of composition frame chart of remote short section in disclosure exemplary embodiment.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment those skilled in the art is comprehensively conveyed to.Described feature, knot
Structure or characteristic can be combined in one or more embodiments in any suitable manner.
In addition, accompanying drawing is only the schematic illustrations of the disclosure, it is not necessarily drawn to scale.Identical accompanying drawing mark in figure
Note represents same or similar part, thus will omit repetition thereof.Some block diagrams shown in accompanying drawing are work(
Can entity, not necessarily must be corresponding with physically or logically independent entity.These work(can be realized using software form
Can entity, or realize in one or more hardware modules or integrated circuit these functional entitys, or at heterogeneous networks and/or place
These functional entitys are realized in reason device device and/or microcontroller device.
A kind of array multi -components underground transient electromagnetic fault detection system, the system are provide firstly in this example embodiment
It can apply to the field such as sleeve pipe and oil pipe abnormality detection, mineral metal products and petroleum resources and ground water engineering prospecting.With reference to Fig. 1
Shown in, described array multi -components underground transient electromagnetic fault detection system can include：
Underground detecting module 101, the detection data for detecting and gathering sleeve pipe to be measured；The underground detecting module 101
Including several detection pipe nipples being sequentially connected with；
Remote short section 102, is connected with the underground detecting module 101, for receiving the control instruction of host computer 20, and receives
Collect the detection data of each detection pipe nipple, the detection data is sent to the host computer 20；
Host computer 20, for receiving the detection data that the remote short section 102 is sent.
In the present example embodiment, the control instruction of host computer 20 is received using remote short section 102, and by control instruction
Each detection pipe nipple into underground detecting module 101 is sent, sleeve pipe to be detected is detected using each detection pipe nipple, and will visit
The detection data obtained after survey is sent to the remote short section 102, by the remote short section 102 by it is each detection pipe nipple detection number
According to being sent after being integrated to host computer 20.When being detected, it on the one hand can be set and detected according to the number of plies situation of tubing string
The quantity of pipe nipple, so as to ensure the stability and correctness of testing result；On the other hand so that the underground detecting module 101
Use and assemble and be more convenient.
Below, with reference to Fig. 2 ~ Fig. 7, will be to the array multi -components underground transient electromagnetic flaw detection in this example embodiment
Each part of system is described in detail.
Specifically, in this illustrative embodiments, with reference to shown in Fig. 2, above-mentioned underground detecting module can include
The multiple detection pipe nipples being sequentially connected with, such as：The first detection detection pipe nipple of pipe nipple 4, second, to the n-th detection pipe nipple 5.
In this example embodiment, with reference to shown in Fig. 2, Fig. 3, Fig. 4, above-mentioned detection pipe nipple can include housing 301 with
And it is arranged on horizontal detection unit and longitudinal probing unit in the housing 301.
With reference to shown in Fig. 2, the horizontal detection unit can be mutually perpendicular to including two and with the axle phase of housing axle 301
Vertical transverse-electromagnetic probe, the first transverse-electromagnetic probe 21 and the second transverse-electromagnetic probe 11, first transverse-electromagnetic is visited
First 21 and second transverse-electromagnetic pop one's head in 11 place planes it is vertical with the axis of the housing 301.The longitudinal probing unit can be with
Including the longitudinal electromagnetic probe 12 being arranged in an axially parallel mode with the housing 301.
In the case where not influenceing detection performance, electromagnetic probe receives the transceiver mould in outer layer using transmitting in internal layer
Formula, can shorten the length of detection pipe nipple, so as to effectively shorten the overall total length of instrument.Each electromagnetic probe can be with one
Individual excitation radiating circuit is connected, for providing bipolarity pumping signal to electromagnetic probe.A receiving circuit can be set simultaneously, it is right
The reception signal of three electromagnetic probes such as is amplified, filtered at the processing, and then coding carries out storage and waits the spread of the rumours information processing mould
The upload control instruction of block.
It is in the present example embodiment, above-mentioned with reference to shown in Fig. 4 in order to further optimize the structure of the detection pipe nipple
A machinery frame 304, longitudinal electromagnetic probe 12, the first transverse-electromagnetic probe 21 are provided with the housing 301 for detecting pipe nipple
It is mounted and fixed on the second transverse-electromagnetic probe 11 on the machinery frame 304, so as to ensure in the course of the work, each electromagnetism
The stability and security of probe.
In this illustrative embodiments, the two ends of housing 301 of above-mentioned detection pipe nipple can be respectively arranged with joint and determine
Position key 302 and the positioning spline 303 matched with the joint positioning key 302.By setting the joint positioning key 302 and determining
Position keyway 303, can make each detection pipe nipple eaily be attached and assemble.
Also, the joint positioning key can axially set the angle of a fixation with positioning spline along the housing.Combination
Make afterwards longitudinally in each electromagnetic probe be in equiangularly spaced arrangement, transverse-electromagnetic pop one's head in instrument internal axial section reference
Shown in Fig. 5, horizontal plane is divided into eight detection sectors, four section detection pipe nipples after the transversal sonde combination in two section detection pipe nipples
Horizontal plane is divided into 16 detection sectors after combination, is popped one's head in due to transverse-electromagnetic and footpath is compared extremely to the metal on its axial direction
Upward metal quite sensitive, so so combined detection would not omit the abnormal conditions in any orientation of horizontal direction.With reference to
Shown in Fig. 6, length, diameter and the coil turn of the vertical direction electromagnetic probe on each detection pipe nipple can be visited with different
Survey scope is also different, and the investigative ranges of vertical sonde successively outwards expand after four section pipe nipples combinations, can be big with reference to after
The column layered probe ability of big lifting instrument.
In this illustrative embodiments, with reference to shown in Fig. 7, the remote short section 102 can include：The spread of the rumours information processing
Module 1021, temperature monitoring module 1022, real-time locating module 1023 and underground power supply used module 1024.Wherein：
The spread of the rumours message processing module 1021 is used for the control instruction for receiving the host computer 20, to the detection pipe nipple
Send control instruction and collect, store the detection data of each detection pipe nipple, and the detection data is sent on described
Position machine 20.
The temperature monitoring module 1022 is used for temperature information under real-time monitoring well.Temperature collect module 1022 can be by
Temperature sensor and peripheral circuit composition.
The real-time locating module 1023 is used for the real-time azimuthal for determining the detection pipe nipple.The real-time locating module
1023 can be made up of gravity accelerometer and peripheral circuit, for positioning the real-time azimuthal of each detection pipe nipple, with
Just following explanations.Temperature data can be added in detection data with real time positioning data after together with upload.
It is that the underground detecting module and remote short section provide electric energy that the underground power supply used module 1024, which is used for,.The well
Lower power supply module can include voltage regulation unit and two coupled DC-DC power supply units.Pass through the power bus of instrument
Powered to each pipe nipple, power supply module 1024 can should provide enough power to meet the demand of underground detecting module 101, also
Want control electric current no more than rated value, prevent from burning out part of devices.
The spread of the rumours message processing module 1021 obtains the detection information of each detection pipe nipple by sending control instruction come timesharing,
The terrestrial system of single-core cable 1 is concentrated through after storage during the gap of detection information is received to upload.Upload procedure can be with
Realized by power carrier, underground is uploaded after by transformer, signal is coupled with supply voltage, and transformer is passed through on well
Handled after signal is separated with supply voltage.Remote short section 102 is issued if part detection pipe nipple breaks down
When the detection data of mistake does not even send data to remote short section 102, the spread of the rumours message processing module 1021 can be to such detection
Pipe nipple sends ten instruction of restarting, and detection pipe nipple normal work then stops sending instruction of restarting, if still cisco unity malfunction is distant
The data that pipe nipple then no longer receives such pipe nipple are passed, the detection data of the detection pipe nipple of normal work are only received, so in part
It is ensured that instrument can also continue to work when pipe nipple is out of order.
In this illustrative embodiments, with reference to shown in Fig. 2, above-mentioned array multi -components underground transient electromagnetic flaw detection system
System can also include：
Transmitting device, for the underground detecting module, remote short section 102 to be delivered under well 8 in sleeve pipe to be measured；It is described
Transmitting device includes：Logging winch 15, single-core cable 1 and head harness 2；And in the upper end of remote sensing pipe nipple 102 and the horse
Centralizer 3 is provided between halter 2, the lower end of the underground detecting module is provided with lower centralizer 7.
Specifically, the upper centralizer 3 and lower centralizer 7 cause instrument to remain at the axle center of well in detection
Position, i.e., each electromagnetic probe is all in well shaft core position so that the Primary field that the transmitting coil of detection pipe nipple is produced is arrived
The distance of the borehole wall is certain, it is to avoid instrument rocks the detecting error caused in well.Two centralizers can be according to borehole diameter
It is easy to operate to change.The head harness 2 is the device for connecting single-core cable 1 and underground detecting module 101, can be with waterproof, anti-
Pressure.The shell of whole underground detection system is made of non-magnetic material titanium alloy, and electromagnetic probe will not be interfered.
The logging winch 15 is used for the remote short section and the underground detecting module feeding underground is to be measured
In sleeve pipe.The logging winch 15 by the single-core cable 1 successively with the head harness 2, upper centralizer 3, remote short section
102nd, underground detecting module and the lower centralizer 7 that is connected.Single-core cable 1 and ground acquisition cabinet in the logging winch 15
14 can be connected by underground power supply used power line 16, and the depth calculating instrument in logging winch can pass through with ground acquisition cabinet 14
Depth data line 17, which is connected, to carry out data transmission.Meanwhile, the logging winch 15 can also pass through ground acquisition cabinet 14 and institute
Host computer 20 is stated to communicate to connect；Described ground acquisition cabinet 14 can by the first USB line 9 and the second USB line 13 with it is above-mentioned
Upper 20 connect row data communication of going forward side by side.
Downhole instrument is connected by the single-core cable 1 on logging winch 20 and transferred into well 8 in the scheme of the disclosure.It is logical
Cross to set on the host computer 20 and show software, the display software has detection data, the temperature number of all detection pipe nipples
Shown in real time and memory function according to, bearing data, include the spectral intensity figure of detective curve, improve monitor in real time directly perceived
Property.
Certain in surrounding medium electrical conductivity and magnetic conductivity, i.e., metallics is evenly distributed and in the case that total amount is certain, often
The voltage signal values that individual electromagnetic probe is received are constant, and it is near with depth a rule to be shown on the display software of host computer 20
Like vertical curve, if run into the abnormal i.e. casing damage of metal and metal ore bed, longitudinal electromagnetism of each detection pipe nipple is visited
The signal attenuation time received by head changes, and the voltage magnitude of corresponding each sampled point can change, upper
Position machine 20 shows that the display curve on software can deviate stationary value, until recovering stationary value after abnormal disappearance.And it is axially just right
The transverse-electromagnetic probe of metal abnormal position can also occur more significantly to change.The detective curve of multiple electromagnetic probes is combined
The abnormal shapes and sizes of metal, parameter and depth calculating instrument further according to real-time azimuthal monitoring system can be drawn after explanation
Depth data calculate the abnormal specific orientation of metal.
When running into the less situation of the tubing string number of plies, it can add one to two section detection pipe nipples with regard to detection demand can be met；Run into
During the situation of multilayer pipe string, section detection pipe nipple can be added, detection pipe nipple can also be changed, and dismount simple to operation.
Those skilled in the art will readily occur to the disclosure after considering specification and putting into practice utility model disclosed herein
Other embodiments.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, use
Way or adaptations follow the general principle of the disclosure and including undocumented in the art known of the disclosure
General knowledge or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by institute
Attached claim is pointed out.
Claims (10)
1. a kind of array multi -components underground transient electromagnetic fault detection system, it is characterised in that including：
Underground detecting module, the detection data for detecting and gathering sleeve pipe to be measured；The underground detecting module includes sequentially connecting
Several detection pipe nipples connect；
Remote short section, is connected with the underground detecting module, for receiving the control instruction of host computer, and collects each detection
The detection data of pipe nipple, the detection data is sent to the host computer；
Host computer, for receiving the detection data that the remote short section is sent.
2. array multi -components underground transient electromagnetic fault detection system according to claim 1, it is characterised in that the detection
Pipe nipple includes housing and the horizontal detection unit and longitudinal probing unit that are arranged in the housing；
The horizontal detection unit includes two and is mutually perpendicular to and axially perpendicular transverse-electromagnetic is popped one's head in the housing；
The longitudinal probing unit includes the longitudinal electromagnetic probe being arranged in an axially parallel mode with the housing.
3. array multi -components underground transient electromagnetic fault detection system according to claim 2, it is characterised in that
It is provided for fixing the machinery frame of the transverse-electromagnetic probe and longitudinal electromagnetic probe in the detection pipe nipple housing.
4. array multi -components underground transient electromagnetic fault detection system according to claim 2, it is characterised in that
The positioning key that the detection pipe nipple housing two ends are respectively arranged with joint positioning key and matched with the joint positioning key
Groove.
5. array multi -components underground transient electromagnetic fault detection system according to claim 4, it is characterised in that
The joint positioning key has an angle with positioning spline along the housing is axially arranged.
6. array multi -components underground transient electromagnetic fault detection system according to claim 1, it is characterised in that described the spread of the rumours
Pipe nipple includes：
The spread of the rumours message processing module, the control instruction for receiving the host computer sends control instruction to the detection pipe nipple
And collect, store the detection data of each detection pipe nipple, and the detection data is sent to the host computer；
Temperature monitoring module, for temperature information under real-time monitoring well；
Real-time locating module, the real-time azimuthal for determining the detection pipe nipple；
Underground power supply used module, for being that the underground detecting module and remote short section provide electric energy.
7. array multi -components underground transient electromagnetic fault detection system according to claim 6, it is characterised in that
The underground power supply used module includes voltage regulation unit and two coupled DC-DC power supply units.
8. array multi -components underground transient electromagnetic fault detection system according to claim 1, it is characterised in that the flaw detection
System also includes transmitting device, for the underground detecting module, remote short section to be delivered in the sleeve pipe to be measured of underground；It is described to pass
Defeated device includes：Logging winch, single-core cable and head harness；
The logging winch is connected with the head harness, remote short section and underground detecting module successively by the single-core cable
Connect, for the remote short section and the underground detecting module to be sent into the underground sleeve pipe to be measured.
9. array multi -components underground transient electromagnetic fault detection system according to claim 8, it is characterised in that described the spread of the rumours
Centralizer is provided between pipe nipple upper end and the head harness, the lower end of the underground detecting module is provided with lower centralizer.
10. array multi -components underground transient electromagnetic fault detection system according to claim 8, it is characterised in that the survey
Well winch is communicated to connect by ground acquisition cabinet and the host computer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596715A (en) * | 2017-01-20 | 2017-04-26 | 西安石油大学 | Array type transient electromagnetic method multi-layer pipe column damage detection system and array type transient electromagnetic method multi-layer pipe column damage detection method |
| CN111610569A (en) * | 2020-04-30 | 2020-09-01 | 中国石油天然气集团有限公司 | High-temperature small-diameter ground well transient electromagnetic combined receiver |
| CN111734389A (en) * | 2020-07-29 | 2020-10-02 | 中国海洋石油集团有限公司 | Transient electromagnetic rescue well detection method and system based on combined eccentric probe |
-
2017
- 2017-01-20 CN CN201720072649.3U patent/CN206399896U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596715A (en) * | 2017-01-20 | 2017-04-26 | 西安石油大学 | Array type transient electromagnetic method multi-layer pipe column damage detection system and array type transient electromagnetic method multi-layer pipe column damage detection method |
| CN106596715B (en) * | 2017-01-20 | 2024-01-26 | 西安石油大学 | Array type transient electromagnetic method multilayer tubular column damage detection system and method |
| CN111610569A (en) * | 2020-04-30 | 2020-09-01 | 中国石油天然气集团有限公司 | High-temperature small-diameter ground well transient electromagnetic combined receiver |
| CN111734389A (en) * | 2020-07-29 | 2020-10-02 | 中国海洋石油集团有限公司 | Transient electromagnetic rescue well detection method and system based on combined eccentric probe |
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