CN103537423B - Phased array transducing head, stone oil drill collar thread detecting device and detection method - Google Patents
Phased array transducing head, stone oil drill collar thread detecting device and detection method Download PDFInfo
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- CN103537423B CN103537423B CN201310474379.5A CN201310474379A CN103537423B CN 103537423 B CN103537423 B CN 103537423B CN 201310474379 A CN201310474379 A CN 201310474379A CN 103537423 B CN103537423 B CN 103537423B
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Abstract
The invention relates to a kind of phased array transducing head, stone oil drill collar thread detecting device and detection method, belong to oil drilling tools detection field, described phase array transducer, its centre frequency is 2.5-5MHz, it comprises: matrix; And at least 8 array elements, described array element is rectangle piezoelectric chip, is embedded in described matrix, at least 8 described array elements have interval and linearly type distribution each other; Described voussoir, is made up of lucite or poly-the third ethene, and described voussoir comprises that angle is the first surface of 45-68 ° and second, and described first surface is connected with described phase array transducer, and described second is cambered surface; Described cambered surface, is cancave cambered surface, and the intersection place diameter of a circle of itself and described first surface is 60-170mm; Or described cambered surface, is convex globoidal, the intersection place diameter of a circle of itself and described first surface is 38-76mm. The phased array transducing head that the embodiment of the present invention provides, when detection signal disturb little, resolving power is high, is not prone to undetected phenomenon.
Description
Technical field
The present invention relates to a kind of phased array transducing head, stone oil drill collar thread detecting device and detection method,Belong to oil drilling tools detection field, particularly relate to one and utilize ultrasonic phase array to detect stone oil drill collar spiral shellThe checkout gear of line and detection method.
Background technology
The fatigue fracture of drill collar easily causes serious accident, a lot of the coming from of crackle of drill collar fatigue fractureDrill collar threads bottom crack, for avoiding drill collar fatigue fracture, should regularly detect drill collar threads.
At present, this area is used A type pulse reflection Ultrasound Instrument to add normal probe or low-angle normal probe pairStone oil drill collar screw thread detects, and the two all utilizes the lock-out pulse in A type pulse reflection Ultrasound InstrumentThe high frequency electric pulse that circuit produces, converts acoustic energy by the piezoelectric chip in normal probe to high frequency electric pulse,By couplant, ultrasonic wave is just propagated in workpiece, and running into different interfaces will produce on interfaceRefraction and reflection, the back wave reception of being popped one's head in, converts the signal of telecommunication by piezoelectric chip to acoustic energy, telecommunicationsNumber be detected, after amplification, deliver on fluoroscopic scan line and produce waveform, have as long as observe on fluorescent screenAreflexia, just can judge whether defectiveness of screw thread.
Inventor realizing in process of the present invention, finds that prior art at least exists following problem:
In normal probe method when test,, normal probe probes in the screwed hole of drill collar, and acoustic beam is along straightline propagation, butScrew thread has tapering, and Main beam can not arrive the bottom of thread, and detecting what use is time acoustic beam, therefore to deeplyThe following crackle of degree 3mm is easy to undetected;
The ultrasonic wave Main beam that low-angle normal probe produces passes along the direction that is parallel to drill collar threads taperingBroadcast, if run into bottom of thread crackle, on fluorescent screen, just demonstrate reflection configuration, observe back wave and can sentenceFailure crack defect, but normal screw thread reflected signal is large to the interference of flaw indication, and little defect cannot be differentiated.
Summary of the invention
In order to solve the problem of prior art, the embodiment of the present invention provide a kind of phased array transducing head,Stone oil drill collar thread detecting device and detection method. Described technical scheme is as follows:
On the one hand, provide a kind of phased array transducing head, it comprises phase array transducer and voussoir,Described phase array transducer, its centre frequency is 2.5-5MHz, it comprises: matrix; And at least8 array elements, described array element is made up of rectangle piezoelectric chip, described in described rectangle piezoelectric chip is embedded inIn matrix, and have each other interval, linearly type distributes; Described voussoir, by organic glassGlass or poly-the third ethene are made, and described voussoir comprises that angle is the first surface of 45-68 ° and second, described inFirst surface be connected with described phase array transducer, described second is cambered surface; Described cambered surface,For cancave cambered surface, the intersection place diameter of a circle of itself and described first surface is 60-170mm; Or describedCambered surface, is convex globoidal, and the intersection place diameter of a circle of itself and described first surface is 38-76mm.
Preferably, the number of described array element is 16-64, the spacing between adjacent two described array elementsFor 0.4-0.6mm, the length of described array element is 8-12mm.
Concrete, the number of described array element is 32, the spacing between adjacent two described array elements is 0.5mm,The length of described array element is 10mm.
Concrete, the angle between described first surface and second is 55 °, and its inner velocity of sound is2337m/s。
On the other hand, provide a kind of stone oil drill collar thread detecting device, it is main that it comprises that phased array detectsMachine, described phased array detects main frame and has imaging function, also comprises: above-mentioned phased array transducing dressPut; Described phased array transducing head, detects main frame with described phased array and is connected.
Another aspect, provides a kind of stone oil drill collar screw thread detection method, and described method comprises:
Step 1: the side relative with screw thread at drill collar wall applies couplant;
Step 2: the 5 stone oil drill collar thread detecting devices that provide are provided right to use, by described voussoirCambered surface is close to a side at described couplant place, slowly carries out described voussoir, thereby promotes described phasedArray transducer carries out sectoring to described screw thread;
Step 3: utilize described phase array transducer to convert the reflective sound wave signal collecting to telecommunicationsNumber, flow to described phased array and detect main frame preservation imaging;
Step 4: the image showing according to described phased array detection main frame obtains the screw thread of described stone oil drill collarInformation.
Further, after step 4, also comprise:
Step 5: described image has unusual part if find, represents described screw thread defectiveness, utilizes instituteState position and size that phased array detects defect described in Framework computing.
Preferably, the described sectoring in step 2, start angle is 35-45 °, termination point is65-85°。
Concrete, the described sectoring in step 2, start angle is 40 °, termination point is 70°。
In step 5, described position and the chi that utilizes described phased array to detect defect described in Framework computingVery little, specifically comprise:
Transfer the profile diagram that described phased array detects the described stone oil drill collar screw thread in main frame;
Described back wave position is corresponded to the relevant position of described profile diagram, determine the position of described defectPut and size.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The phased array transducing head that the embodiment of the present invention provides, its phase array transducer is launched accessibilityGood ultrasonic acoustic beam, by using voussoir, changes described ultrasonic acoustic beam, can incide and treatDetect each orientation of stone oil drill collar screw thread, thereby stone oil drill collar screw thread carried out to omnibearing detection,Due to screw thread defects i.e.cracks produce reflective sound wave signal occur separately, and with normal screw thread reflected soundThere is position difference in ripple signal, so signal interference is little while detection, resolving power is high, is not prone to undetectedPhenomenon.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, of the present invention in order to better understandTechnological means, and can being implemented according to the content of description, below with preferred embodiment of the present inventionAnd coordinate accompanying drawing to be described in detail as follows.
Brief description of the drawings
The array element distribution map of the transducing head that Fig. 1 provides for the embodiment of the present invention 1;
The wedge structure schematic diagram of the transducing head that Fig. 2 provides for the embodiment of the present invention 1;
The transducing head that Fig. 3 provides for the embodiment of the present invention 1 is for measuring the work of stone oil drill collar internal threadMake view;
Fig. 4 external screw thread stone oil drill collar defect common location;
Fig. 5 internal thread stone oil drill collar defect common location;
The reflection that when Fig. 6 tests for the method providing by the embodiment of the present invention 3, normal threaded portion producesSignal graph;
The reflection that when Fig. 7 tests for the method providing by the embodiment of the present invention 3, one improper screw thread producesSignal graph;
What when Fig. 8 tests for the method providing by the embodiment of the present invention 3, same improper screw thread produced is anti-Penetrate signal graph;
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing, the invention will be further described, but not as to thisBright restriction.
Embodiment 1
The embodiment of the present invention provides a kind of phased array transducing head, for testing oil drill collar threads,It comprises phase array transducer and voussoir, described phase array transducer, and its centre frequency is2.5-5MHz, it comprises matrix and at least 8 array elements, described array element is by rectangle piezoelectric chip structureBecome, preferred rectangular ceramic piezoelectric chip in the present embodiment, described rectangle piezoelectric chip is along being parallel to instituteState the direction layout of matrix width, be embedded in described matrix, as shown in Figure 1, to comprise 16 array elementsFor example, 16 piezo-electric crystals have interval and linearly type distribution each other, by controlling each pressureElectricity wafer firing time, controls and produces beam angle; As shown in Figure 2, described voussoir is by organic glassGlass or poly-the third ethene are made, and described voussoir comprises first surface 11 and second 12, first surface 11 and theThe angle α of two 12 is 45-68 °, and first surface 11 is that plane is connected with described phase array transducer,Second 12 is cambered surface, and the radian of described cambered surface and the measurement face of stone oil drill collar to be measured, with screw thread phaseThe one side of the back of the body is consistent, so that it is close to the measurement face of stone oil drill collar, and the voussoir of detection internal thread, itsSecond 12 is cancave cambered surface, outside itself and first surface 11 intersection place diameter of a circles and described stone oil drill collarFootpath is equal, and the external diameter of stone oil drill collar is generally 60-170mm, and therefore described intersection place diameter of a circle is60-170mm, detects externally threaded voussoir, and its second 12 is convex globoidal, and itself and first surface 11 are handed overLine place diameter of a circle equates with described oil drill rocker internal diameter, and the internal diameter of stone oil drill collar is generally38-76mm, therefore described intersection place diameter of a circle is 38-76mm, in the present embodiment, described wedgePiece is for measuring the internal thread that external diameter is the stone oil drill collar of 168mm, and its second 12 is cancave cambered surface, theOne side 11 and second 12 intersection place diameter of a circle are 168mm.
Referring to Fig. 3, the phased array transducing head that the embodiment of the present invention provides and conventional phased array measuring instrument connectAfter connecing, can detect the internal thread of stone oil drill collar 2 21, when measurement, at stone oil drill collar 2Outer wall applies one deck couplant as good in the entrant sound such as machine oil, paste, and the cancave cambered surface of voussoir 1 is close to stoneOil drill collar 2 applies the one side of couplant, promotes voussoir 1, the phase array transducer 3 being connected with voussoir 1Along with voussoir 1 moves, stone oil drill collar 1 is carried out to sectoring, phase array transducer 3 will collectReflective sound wave signal convert the signal of telecommunication to, flow to described phased array detector and preserve imaging; According toThe image that described phased array detector shows obtains the screw thread information of described stone oil drill collar. When for oilWhen the screw thread crackle of drill collar 2 detects, referring to Fig. 4 and Fig. 5, because the screw thread of stone oil drill collar 2 splitsThe defects such as line 22 are generally created in the root of end three buttons, while therefore detection, can detect this region by emphasis.
The phased array transducing head that the embodiment of the present invention provides, its phase array transducer is launched accessibilityGood ultrasonic acoustic beam, by using voussoir, changes described ultrasonic acoustic beam, can incide and treatDetect each orientation of stone oil drill collar screw thread, thereby stone oil drill collar screw thread carried out to omnibearing detection,Due to screw thread defects i.e.cracks produce reflective sound wave signal occur separately, and with normal screw thread reflected soundThere is position difference in ripple signal, so signal interference is little while detection, resolving power is high, is not prone to undetectedPhenomenon.
Preferably, the element number of array of described phase array transducer is 16-64, adjacent two described battle arraysSpacing between unit is 0.4-0.6mm, and the length of described array element is 8-12mm, and increasing element number of array hasBe beneficial to and improve velocity of wave directive property, improve accuracy of detection and detection efficiency, but can increase testing cost,According to this parameter, array element is set, its velocity of wave directive property can ensure to obtain higher certainty of measurement, and hasBe beneficial to and reduce costs, preferably, element number of array is 32, and the spacing between array element is 0.5mm, described inThe length of array element is 10mm.
Preferably, the angle between described first surface and second is 55 °, and its inner velocity of sound is2337m/s. Because drill collar threads defect has more present run-out(of thread), and drill collar threads afterbody place drill collarThickness is 20-50mm, and the preferred 45-68 ° of angle between described first surface and second, 55 ° timeEffect is best.
Embodiment 2
The embodiment of the present invention provides a kind of stone oil drill collar thread detecting device, and it comprises that phased array detectsThe phased array transducing head that main frame and above-described embodiment provide, described phased array detects main frame and can beThere is arbitrarily the phased array detector of imaging function, described phased array transducing head and described phased arrayDetection main frame connects.
The stone oil drill collar thread detecting device that the embodiment of the present invention provides, by using above-mentioned phased array to changeEnergy device, can carry out omnibearing detection to stone oil drill collar screw thread, because screw thread defects i.e.cracks producesRaw reflective sound wave signal occurs separately, and occurs that from normal screw thread reflective sound wave signal position is different,So signal interference is little while detection, resolving power is high, is not prone to undetected phenomenon.
Embodiment 3
The embodiment of the present invention provides a kind of stone oil drill collar screw thread detection method, and described method comprises:
Step 1: the side relative with screw thread at drill collar wall applies couplant, coupling used in the present embodimentMixture is machine oil;
Step 2: the stone oil drill collar thread detecting device that provides of above-described embodiment is provided, by described voussoirCambered surface is close to a side at described couplant place, slowly carries out described voussoir, thereby promotes described phasedArray transducer carries out sectoring to described screw thread;
Before use, in described detector, input: the material of stone oil drill collar, screw thread place to be measuredPlace's thickness; The centre frequency of phase array transducer, element number of array, array element distance, array element length; WedgeThe first surface of piece and second 's angle, the velocity of sound and second 's radian; Focus on rule; The type of focusing;Minimum scanning angle, maximum scan angle.
Adopt reference block to carry out sound velocity calibration, the horizontal through hole test block of employing standard postpones calibration and spiritSensitivity calibration, adopts reference block to carry out adjustment of sensitivity.
Preferably, described sectoring, start angle is 35-45 °, termination point is 65-85 °.Because of preferably 55 ° of transducer Main beam incident angles, form general 55 ± (10 ∽ 20) of selection of sectoring°, if sweep limits is too little, detection efficiency is low, if sweep limits is too large, image fault is tighterHeavy, preferably start angle is 40 °, and termination point is 70 °.
Step 3: utilize described phase array transducer to convert the reflective sound wave signal collecting to telecommunicationsNumber, flow to described phased array and detect main frame preservation imaging;
Step 4: the image showing according to described phased array detection main frame obtains the screw thread of described stone oil drill collarInformation.
The stone oil drill collar screw thread detection method that the embodiment of the present invention provides, utilizes phase array transducer transmittingGo out the good ultrasonic acoustic beam of accessibility, by using voussoir, change described ultrasonic acoustic beam, canIncide each orientation of stone oil drill collar screw thread to be detected, thereby carry out comprehensive to stone oil drill collar screw threadDetection, due to screw thread defects i.e.cracks produce reflective sound wave signal occur separately, and with normal spiral shellThere is position difference in line reflective sound wave signal, so signal interference is little while detection, resolving power is high, is difficult forThere is undetected phenomenon; From drill collar periphery inspection internal thread, inner headed face inspection external screw thread, is not sealed by drill collarThe impact of face size, can detect all size drill collars.
Preferably, after step 4, also comprise:
Step 5: described image has unusual part if find, represents the corresponding screw thread in this unusual partDefectiveness, utilizes described phased array to detect position and the size of defect described in Framework computing:
While running into defects i.e.cracks due to sectoring acoustic beam, reflect the amplitude of reflected signal and phaseThe information such as the size, shape, character that position has comprised reflector space, therefore can provide defects i.e.cracksParticular location and size. In the present embodiment, by transferring the profile diagram of described stone oil drill collar screw thread; WillDescribed back wave position corresponds to the relevant position of described profile diagram, more the observation spiral shell of visual patternLine defective locations and size.
The detection method that embodiment 3 provides is for detection of the carbon steel that is 168mm with internal thread, external diameterWith austenitic stainless steel stone oil drill collar:
Described phased array detects main frame: select the PHASCAN of Guangzhou Doppler electronic Science and Technology Ltd. justTake formula ultrasonic phase array defectoscope;
Described phase array transducer: according to the design of drill collar threads shape NC23-NC70 button-type, array elementNumber is 32, and the spacing between adjacent two described array elements is 0.5mm, and the length of described array element is10mm；
Described voussoir, 55 ° of its first face width 20mm, long 20mm, first surface and second angles,Two corresponding diameter of a circles are that 168mm, the inner velocity of sound are 2337m/s;
Focus on rule: fan-shaped;
The type of focusing: real depth;
Start angle: 40 °, termination point: 70 °;
Adopt SGB-3 reference block to carry out sound velocity calibration, postpone calibration, sensitivity calibration;
Adopt reference block to carry out adjustment of sensitivity, described reference block for adopt same specification, same to button-type,The artificial defect reflector made from the screw thread of material, described artificial defect reflector degree of depth 1mm, length20mm, width is less than 1mm, and cutting is at its afterbody 2-3 buckle, the dark 1mm of cutting.
Fig. 6-Fig. 8 is test result figure.
Wherein, what Fig. 6 showed is the situation of the normal position of screw thread in sectoring figure, and Fig. 7 is aobviousShow the 60 ° left and right of rejected region in sectoring figure occurring for screw thread time situation, Fig. 8Situation during for the 45 ° left and right of same rejected region in sectoring figure.
The above, be only preferred embodiment of the present invention, not the present invention made to any formOn restriction, although the present invention disclose as above with preferred embodiment, but not in order to limit thisBright. Any those skilled in the art, are not departing within the scope of technical solution of the present invention, when can profitMake a little change or be modified to the equivalent embodiment of equivalent variations with the technology contents of above-mentioned announcement, butEvery content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to above embodimentAny simple modification, equivalent variations and the modification done, all still belong to the scope of technical solution of the present inventionIn.
Claims (7)
1. a phased array transducing head, it comprises phase array transducer and voussoir, it is characterized in that:
Described phase array transducer, its centre frequency is 2.5-5MHz, it comprises:
Matrix; And
Array element, described array element is made up of rectangle piezoelectric chip, and described rectangle piezoelectric chip is embedded in instituteState in matrix, and have interval each other, linearly type distributes;
Described voussoir, is made up of lucite or poly-the third ethene, and described voussoir comprises first surface and theTwo, described first surface is connected with described phase array transducer, and described second is cambered surface;
Described cambered surface, is cancave cambered surface, and the intersection place diameter of a circle of itself and described first surface is60-170mm; Or described cambered surface, is convex globoidal, the intersection place circle of itself and described first surfaceDiameter be 38-76mm;
The number of described array element is 32, and the spacing between adjacent two described array elements is 0.5mm, described inThe length of array element is 10mm;
Angle between described first surface and second is 55 °, and its inner velocity of sound is 2337m/s;
Described phased array transducing head also comprises: for described voussoir and described array element are carried out to velocity of sound schoolAccurate reference block, for postponing described voussoir and described array element to calibrate and sensitivity calibrationThe horizontal through hole test block of standard, and for described voussoir and described array element are carried out to the contrast of adjustment of sensitivityTest block.
2. a stone oil drill collar thread detecting device, it comprises that phased array detects main frame, described is phasedBattle array detection main frame has imaging function, it is characterized in that, also comprises:
Phased array transducing head as claimed in claim 1;
Described phased array transducing head, detects main frame with described phased array and is connected.
3. a stone oil drill collar screw thread detection method, is characterized in that, described method comprises:
Step 1: the side relative with screw thread at drill collar wall applies couplant;
Step 2: the 2 stone oil drill collar thread detecting devices that provide are provided right to use, adopts reference blockDescribed voussoir and described array element are carried out to sound velocity calibration, the horizontal through hole test block of employing standard to described voussoir andDescribed array element postpones calibration and sensitivity calibration, adopts reference block to described voussoir and described battle arrayUnit carries out adjustment of sensitivity;
Step 3: the cambered surface of described voussoir is close to a side at described couplant place, described in slowly carrying outVoussoir, carries out sectoring thereby promote described phase array transducer to described screw thread;
Step 4: utilize described phase array transducer to convert the reflective sound wave signal collecting to telecommunicationsNumber, flow to described phased array and detect main frame preservation imaging;
Step 5: the image showing according to described phased array detection main frame obtains the screw thread of described stone oil drill collarInformation.
4. stone oil drill collar screw thread detection method according to claim 3, is characterized in that stepAfter 5, also comprise:
Step 6: described image has unusual part if find, represents described screw thread defectiveness, utilizes instituteState position and size that phased array detects defect described in Framework computing.
5. according to the stone oil drill collar screw thread detection method described in claim 3 or 4, it is characterized in that,Described sectoring in step 2, start angle is 35-45 °, termination point is 65-85 °.
6. stone oil drill collar screw thread detection method according to claim 5, is characterized in that stepDescribed sectoring in 2, start angle is 40 °, termination point is 70 °.
7. stone oil drill collar screw thread detection method according to claim 4, is characterized in that stepIn 6, described position and the size of utilizing described phased array to detect defect described in Framework computing, specifically bagDraw together:
Transfer the profile diagram that described phased array detects the described stone oil drill collar screw thread in main frame;
Described back wave position is corresponded to the relevant position of described profile diagram, determine the position of described defectPut and size.
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| CN104374833A (en) * | 2014-11-28 | 2015-02-25 | 南通友联数码技术开发有限公司 | Ultrasonic probe sector-scanning device |
| CN105241962A (en) * | 2015-10-22 | 2016-01-13 | 安东检测有限公司 | Phased array probe and phased array instrument |
| CN108571317B (en) * | 2017-03-09 | 2021-05-07 | 中国石油化工股份有限公司 | Logging-while-drilling well diameter measuring system |
| CN107247090A (en) * | 2017-06-15 | 2017-10-13 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of turbine rotor wheel rim T-slot detection method |
| CN108061757A (en) * | 2018-01-23 | 2018-05-22 | 海洋石油工程股份有限公司 | For the ultrasonic phase array detection method of corrosion-resistant mechanical multiple tube girth joint |
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| CN203508358U (en) * | 2013-10-11 | 2014-04-02 | 新疆通奥油田技术服务有限公司 | Phased array transduction device and oil drill collar thread detection device |
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| JP4782327B2 (en) * | 2001-02-14 | 2011-09-28 | 一正 大西 | Clamp-on type ultrasonic flowmeter |
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| CN202583131U (en) * | 2012-05-09 | 2012-12-05 | 河北省电力研究院 | Sliding angle variable probe special for guided wave detection |
| CN103018334A (en) * | 2013-01-09 | 2013-04-03 | 河南省电力公司电力科学研究院 | Ultrasonic imaging detecting method of mushroom type root part of blades of steam turbine and phased array energy transduction device |
| CN203508358U (en) * | 2013-10-11 | 2014-04-02 | 新疆通奥油田技术服务有限公司 | Phased array transduction device and oil drill collar thread detection device |
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