CN107462632A - The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound - Google Patents

The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound Download PDF

Info

Publication number
CN107462632A
CN107462632A CN201710543174.6A CN201710543174A CN107462632A CN 107462632 A CN107462632 A CN 107462632A CN 201710543174 A CN201710543174 A CN 201710543174A CN 107462632 A CN107462632 A CN 107462632A
Authority
CN
China
Prior art keywords
coiled tubing
probe
ultrasound
testing equipment
destructive testing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710543174.6A
Other languages
Chinese (zh)
Other versions
CN107462632B (en
Inventor
袁发勇
张国锋
江强
高云伟
孙文常
陈龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Oilfield Service Corp
Sinopec Jianghan Petroleum Engineering Co Ltd
Original Assignee
Sinopec Oilfield Service Corp
Sinopec Jianghan Petroleum Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinopec Oilfield Service Corp, Sinopec Jianghan Petroleum Engineering Co Ltd filed Critical Sinopec Oilfield Service Corp
Priority to CN201710543174.6A priority Critical patent/CN107462632B/en
Publication of CN107462632A publication Critical patent/CN107462632A/en
Application granted granted Critical
Publication of CN107462632B publication Critical patent/CN107462632B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04Analysing solids
    • G01N29/041Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/24Probes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/023Solids
    • G01N2291/0234Metals, e.g. steel
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The present invention relates to a kind of online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound, including chassis body (1), Magnetic Flux Leakage Inspecting unit (2), ultrasonic detecting unit (3) are provided with the chassis body (1) and surveys long unit (4), chassis body (1) rear and front end is provided with the inlet and outlet (1 2) for allowing coiled tubing to pass in and out, and guide sleeve (1 3) is provided with the inlet and outlet (1 2).The good magnetic conductivity that the present invention has using steel coiled tubing, apply axially superpower magnetizing field to it using through mode magnetizing device with permanent magnet, motivate the vertical, horizontal defect magnetic flux leakage field on body, this stray field information is captured using highly sensitive magnetic induction part, to the comprehensive detection of defect on coiled tubing.

Description

The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound
Technical field
The present invention relates to petroleum equipment instrument field, more specifically to a kind of continuous oil based on leakage field and ultrasound Manage online Non-Destructive Testing equipment.
Background technology
Because coiled tubing applying working condition is severe, it is prone to complicated and diversified failure, will ultimately result in the wall of continuous pipe Thick, ovality changes, but also can make the cracked defect of oil pipe, causes the service life of continuous pipe to reduce, reduces Operating efficiency.If can in advance find to produce the region of defect and take corresponding remedial measure, wellsite operation can be reduced Security risk and reduction economic loss.Therefore, it is necessary to carry out comprehensively on-line checking to coiled tubing degree of impairment.It is universal at present The coiled tubing testing equipment used, or function is single, crack defect can only be detected, or wall thickness and ellipse can only be detected Degree;Testing result is with a low credibility, and detection wall thickness, ovality precision are low;It is poor to adapt to live continuous oil pipe operation operating mode, Oil pipe shake, velocity variations influence detection structure.Needing one kind to detect, coiled tubing project is complete, accuracy of detection is high, reliability High instrument and method.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of detection function is comprehensive, simple installation, is not easily susceptible to do Disturb, measurement accuracy is high, it is possible to achieve the online Non-Destructive Testing equipment of coiled tubing of tubing stress properties detection.
The technical solution adopted for the present invention to solve the technical problems is:Construct a kind of continuous oil based on leakage field and ultrasound Online Non-Destructive Testing equipment, including chassis body are managed, Magnetic Flux Leakage Inspecting unit, ultrasonic detecting unit are provided with the chassis body With the long unit of survey, the chassis body rear and front end is provided with the inlet and outlet for allowing coiled tubing to pass in and out, installed in the inlet and outlet There is guide sleeve.
In such scheme, the Magnetic Flux Leakage Inspecting unit includes magnetizer housing, annular permanent magnet and magnetic leakage probe, described Annular permanent magnet is arranged on magnetizer housing rear and front end, forms through mode magnetizing device with permanent magnet.
In such scheme, the magnetic leakage probe includes probe socket, probe core and stage clip.Probe socket is consolidated with magnetizer housing Connect, probe core is stuck in the chute of probe socket, is connected between probe core and probe socket by stage clip.
In such scheme, the ultrasound that the ultrasonic detecting unit includes watertight sealed tube and is arranged on inside watertight sealed tube is visited Head.
In such scheme, the sealing drum includes sealing cylinder shell, and the sealing cylinder shell, which is provided at both ends with, makes continuous oil Pipe disengaging import, it is described enter it is intraoral guide sleeve is installed, the guide sleeve clamps with sealing ring with being connected between the sealing ring Working chamber.
In such scheme, the ultrasonic probe includes probe socket, ultrasonic probe core and supported flange.The probe socket insertion In sealing cylinder shell, the ultrasonic probe core insertion is arranged on probe socket, and the supported flange is connected with probe socket, will Ultrasonic probe core pushes down fixation.
In such scheme, the chassis body is arranged between injection head and preventer, and chassis body is fixed with preventer Connection.
Implement the online Non-Destructive Testing equipment of the coiled tubing based on leakage field and ultrasound of the present invention, have below beneficial to effect Fruit:
1st, the good magnetic conductivity having using steel coiled tubing, axial direction is applied to it using through mode magnetizing device with permanent magnet Superpower magnetizing field, motivates the vertical, horizontal defect magnetic flux leakage field on body, and this leakage is captured using highly sensitive magnetic induction part Magnetic Field, to the comprehensive detection of defect on coiled tubing.
2nd, the advantage using ultrasonic detecting technology in terms of thickness measuring, ranging, is laid out using array probe, realizes continuous oil The direct accurate measurement of thickness of pipe wall, diameter parameters, avoid other measure and error is converted existing for method.
3rd, Magnetic Flux Leakage Inspecting unit, ultrasonic detecting unit and the long unit of survey are all integrated in a chassis body, can first be existed Ground installation and debugging are complete, then integral installation after being connected with preventer, enhancing structure globality, are easily installed.
4th, between preventer and injection head, coiled tubing operates steadily, shakes small, measurement accuracy high detection station.
5th, the device realizes that the defects of coiled tubing is under stress is detected, and defect shows more obvious, testing result To tubing use according to directive significance.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the online Non-Destructive Testing armament-related work schematic diagram of coiled tubing;
Fig. 2 is the structural representation of the online Non-Destructive Testing equipment of coiled tubing;
Fig. 3 is chassis body structural representation;
Fig. 4 is Fig. 3 sectional view;
Fig. 5 is the structural representation of Magnetic Flux Leakage Inspecting unit;
Fig. 6 is Fig. 5 sectional view;
Fig. 7 is the structural representation of magnetic leakage probe;
Fig. 8 is the structural representation of ultrasonic detecting unit;
Fig. 9 is Fig. 8 sectional view;
Figure 10 is the structural representation of ultrasonic probe;
Figure 11 is Figure 10 sectional view;
Figure 12 is the structural representation for surveying long unit.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now compares accompanying drawing and describe in detail The embodiment of the present invention.
As shown in figs. 1-12, the online Non-Destructive Testing equipment of coiled tubing of the present invention based on leakage field and ultrasound, leakage field is examined Survey unit 2, ultrasonic detecting unit 3 and survey long unit 4 and be integrated in a chassis body 1, be connected, install with preventer 6 Between preventer 6 and injection head 5, on-line checking is carried out to it in the operation process of coiled tubing 7, as shown in Figure 1.
As shown in Fig. 2 the online Non-Destructive Testing equipment of coiled tubing that present example provides includes chassis body 1, leakage field Detection unit 2, ultrasonic detecting unit 3 and the long unit 4 of survey.
As shown in Figure 3, Figure 4, chassis body 1 be provided at both ends with allow coiled tubing pass in and out connected entrance 1-2, coiled tubing from One end connected entrance 1-2 enters in chassis body 1, then left from other end connected entrance 1-2.Guide sleeve 1-3 is installed in connected entrance, Guide coiled tubing to be capable of the disengaging of smoothness, and keep it in the center of chassis body 1.
As shown in Figure 5, Figure 6, Magnetic Flux Leakage Inspecting unit 2 includes magnetizer housing 2-1, annular permanent magnet 2-2 and leakage field is visited Head 2-3.Into the detection unit coiled tubing be magnetized device housing 2-1, annular permanent magnet 2-2 composition through mode permanent magnet magnetization Device saturated magnetization, the magnetic leakage probe 2-3 of installed therein obtain defect situation by detecting the change in coiled tubing magnetic field.
As shown in fig. 7, magnetic leakage probe 2-3 includes probe socket 2-3-1, probe core 2-3-2 and stage clip 2-3-3.Probe socket 2- 3-1 and magnetizer housing 2-1 are affixed, and probe core 2-3-2 is stuck in probe socket 2-3-1 chute, pass through stage clip 2- between them 3-3 connections.The contact surface of probe core 2-3-2 and coiled tubing is designed as the cambered surface to match with coiled tubing surface, enhances Stickiness, and stage clip 2-3-3 is in deformed state all the time, produces elastic force and promotes probe core 2-3-2 to be moved in chute, makes company When shake or surface irregularity occur for continuous oil pipe, probe core 2-3-2 can be attached on the surface of coiled tubing.
As shown in Figure 8, Figure 9, ultrasonic detecting unit 3 includes watertight sealed tube 3-1 and ultrasonic probe 3-2.Seal cylinder shell 3- 1-1 is provided at both ends with coiled tubing inlet and outlet 3-1-2, imports and exports in 3-1-2 and is provided with guide sleeve 3-1-3.Coiled tubing is from entering Mouth 3-1-2 enters cylinder 3-1, then is left from other end outlet 3-1-2, and guide sleeve 3-1-3 is supported at both ends to coiled tubing, Play a part of centering centering.Sealing ring 3-1-4 is connected with guide sleeve 3-1-3, and working chamber 3-1-5 is clamped in into centre, ensures Its internal recirculated water/oil will not quickly ooze out from outlet 3-1-2.Water/oil as couplant by inlet 3-1-6, go out Mouth 3-1-7, in working chamber 3-1-5 inner loops.
As shown in Figure 10, Figure 11, ultrasonic probe 3-2 includes probe socket 3-2-1, ultrasonic probe core 3-2-2 and supported flange 3-2-3.Probe socket 3-2-1 insertions are arranged in sealing cylinder shell 3-1-1;Ultrasonic probe core 3-2-2 insertions are arranged on probe socket 3-2-1, and extend into by it in water logging chamber 3-1-5;Supported flange 3-2-2 is connected with probe socket, by ultrasonic probe core 3-2-2 Push down fixation.
As shown in figure 12, surveying long unit 4 includes photoelectric coding wheel 4-1, support 4-1.Photoelectric coding wheel 4-1 and support 4-1 Be hinged, support 4-1 is be hinged affixed with Magnetic Flux Leakage Inspecting unit 2.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot Form, these are belonged within the protection of the present invention.

Claims (7)

1. the online Non-Destructive Testing equipment of a kind of coiled tubing based on leakage field and ultrasound, it is characterised in that including chassis body (1) Magnetic Flux Leakage Inspecting unit (2), ultrasonic detecting unit (3), are provided with the chassis body (1) and surveys long unit (4), it is described Chassis body (1) rear and front end is provided with the inlet and outlet (1-2) for allowing coiled tubing to pass in and out, and is provided with the inlet and outlet (1-2) Guide sleeve (1-3).
2. the online Non-Destructive Testing equipment of the coiled tubing according to claim 1 based on leakage field and ultrasound, it is characterised in that The Magnetic Flux Leakage Inspecting unit (2) includes magnetizer housing (2-1), annular permanent magnet (2-2) and magnetic leakage probe (2-3), described Annular permanent magnet (2-2) is arranged on magnetizer housing (2-1) rear and front end, forms through mode magnetizing device with permanent magnet.
3. the online Non-Destructive Testing equipment of the coiled tubing according to claim 2 based on leakage field and ultrasound, it is characterised in that The magnetic leakage probe (2-3) includes probe socket (2-3-1), probe core (2-3-2) and stage clip (2-3-3);Probe socket (2-3-1) with Magnetizer housing (2-1) is affixed, and probe core (2-3-2) is stuck in probe socket (2-3-1) chute, probe core (2-3-2) and spy Connected between headstock (2-3-1) by stage clip (2-3-3).
4. the online Non-Destructive Testing equipment of the coiled tubing according to claim 1 based on leakage field and ultrasound, it is characterised in that The ultrasonic detecting unit (3) includes watertight sealed tube (3-1) and is arranged on the internal ultrasonic probe (3-2) of watertight sealed tube (3-1).
5. the online Non-Destructive Testing equipment of the coiled tubing according to claim 4 based on leakage field and ultrasound, it is characterised in that The sealing drum (3-1) includes sealing cylinder shell (3-1-1), and the sealing cylinder shell (3-1-1), which is provided at both ends with, makes continuous oil The import (3-1-2) of pipe disengaging, is provided with guide sleeve (3-1-3) in the import (3-1-2), the guide sleeve (3-1-3) with Sealing ring (3-1-4) clamps working chamber (3-1-5) with being connected between the sealing ring (3-1-4).
6. the online Non-Destructive Testing equipment of the coiled tubing according to claim 5 based on leakage field and ultrasound, it is characterised in that The ultrasonic probe (3-2) includes probe socket (3-2-1), ultrasonic probe core (3-2-2) and supported flange (3-2-3);The spy Headstock (3-2-1) is embedded to be arranged in sealing cylinder shell (3-1-1), and ultrasonic probe core (3-2-2) insertion is arranged on probe Seat (3-2-1), the supported flange (3-2-2) are connected with probe socket, and ultrasonic probe core (3-2-2) is pushed down into fixation.
7. the online Non-Destructive Testing equipment of the coiled tubing according to claim 1 based on leakage field and ultrasound, it is characterised in that The chassis body (1) is arranged between injection head and preventer, and chassis body (1) is fixedly connected with preventer.
CN201710543174.6A 2017-07-05 2017-07-05 Continuous oil pipe on-line nondestructive testing equipment based on magnetic leakage and ultrasound Active CN107462632B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710543174.6A CN107462632B (en) 2017-07-05 2017-07-05 Continuous oil pipe on-line nondestructive testing equipment based on magnetic leakage and ultrasound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710543174.6A CN107462632B (en) 2017-07-05 2017-07-05 Continuous oil pipe on-line nondestructive testing equipment based on magnetic leakage and ultrasound

Publications (2)

Publication Number Publication Date
CN107462632A true CN107462632A (en) 2017-12-12
CN107462632B CN107462632B (en) 2023-06-27

Family

ID=60544242

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710543174.6A Active CN107462632B (en) 2017-07-05 2017-07-05 Continuous oil pipe on-line nondestructive testing equipment based on magnetic leakage and ultrasound

Country Status (1)

Country Link
CN (1) CN107462632B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001299A (en) * 2018-09-10 2018-12-14 长江大学 A kind of continuous pipe crack online detection instrument
CN111766293A (en) * 2019-04-02 2020-10-13 中国石油天然气集团有限公司 Multi-specification continuous pipe defect detection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087830A (en) * 1994-07-07 2000-07-11 Hydroscope Canada Inc. Flexible device for remote field eddy current inspection of ferrous pipeline containing turns
CN1828219A (en) * 2006-04-06 2006-09-06 上海交通大学 Intelligent detector for submarine pipeline
CN200959008Y (en) * 2006-10-20 2007-10-10 钢铁研究总院 Probe tractor for large-aperture seamless steel-pipe vortex/supersonic wave
CN203461661U (en) * 2013-08-05 2014-03-05 华中科技大学 Friction type mine hoist steel wire rope online detecting device
CN206208832U (en) * 2016-10-11 2017-05-31 北京航天易联科技发展有限公司 A kind of coiled tubing on-line measuring device
CN206862964U (en) * 2017-07-05 2018-01-09 中石化石油工程技术服务有限公司 The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087830A (en) * 1994-07-07 2000-07-11 Hydroscope Canada Inc. Flexible device for remote field eddy current inspection of ferrous pipeline containing turns
CN1828219A (en) * 2006-04-06 2006-09-06 上海交通大学 Intelligent detector for submarine pipeline
CN200959008Y (en) * 2006-10-20 2007-10-10 钢铁研究总院 Probe tractor for large-aperture seamless steel-pipe vortex/supersonic wave
CN203461661U (en) * 2013-08-05 2014-03-05 华中科技大学 Friction type mine hoist steel wire rope online detecting device
CN206208832U (en) * 2016-10-11 2017-05-31 北京航天易联科技发展有限公司 A kind of coiled tubing on-line measuring device
CN206862964U (en) * 2017-07-05 2018-01-09 中石化石油工程技术服务有限公司 The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
安尧,袁利海,郭凤军: "长输液体管道泄漏检测方案的选择" *
李文彬;苏欢;王珂;上官丰收;宋生印;: "连续油管无损检测技术的应用发展" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001299A (en) * 2018-09-10 2018-12-14 长江大学 A kind of continuous pipe crack online detection instrument
CN109001299B (en) * 2018-09-10 2020-08-18 长江大学 Online crack detection equipment for continuous pipe
CN111766293A (en) * 2019-04-02 2020-10-13 中国石油天然气集团有限公司 Multi-specification continuous pipe defect detection device

Also Published As

Publication number Publication date
CN107462632B (en) 2023-06-27

Similar Documents

Publication Publication Date Title
CN109682881B (en) Integrated continuous oil pipe defect detection device
CN109765292B (en) Accurate positioning method for pipeline defects
KR100696991B1 (en) Apparatus and method for searching eddy current of electric heat tube using measuring magnetic permeability in steam generator
US20070222438A1 (en) Electromagnetic flaw detection apparatus for inspection of a tubular
US20190072522A1 (en) System and Method for Detecting and Characterizing Defects in a Pipe
CN102759564B (en) A kind of variable diameter pipe external magnetic memory detection device
CN104330468A (en) Pipeline inspection device based on rotating electromagnetic field
KR20190052735A (en) Pipe inspection method of pipe inspection robot
CN107462632A (en) The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound
CN209264625U (en) A kind of buried metal pipeline Indirect testing device based on weak magnetic detection technique
CN104155360B (en) In-pipeline detector signal excitation and harvester and defect inspection method
CN103063126A (en) Coiled tubing ovality detection method
CN113588774A (en) Acousto-magnetic combined detector in pipeline
CN206862964U (en) The online Non-Destructive Testing equipment of coiled tubing based on leakage field and ultrasound
KR20190052734A (en) Pipe inspection robot
KR20130013681A (en) Apparatus for inspecting bolt and bolt hole defect
CN108037178A (en) A kind of Metal pipeline corrosion defects detection low frequency electromagnetic sensor array
CN201696036U (en) Magnetic positioning oil well diameter logger
CN202649170U (en) Integrated magnetic leakage flaw detection sensor for horizontal and longitudinal defects of oil pipe
CN105044201A (en) Saddle-shaped open vortex detection device and vortex detection method
CN104049030B (en) Drilling tool thread stress condition wellhead detection device
CN208000746U (en) A kind of heterotype tubing eddy current array detection probe
CN109085239A (en) A kind of wheel shaft comprehensive diagnos platform
Li et al. A novel algorithm for acoustic above ground marking based on function fitting
CN201548523U (en) Eddy current detecting device for air valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant