CN102928139A - Method and equipment for contact pressure detection of sealing face of metal-metal sealing joint - Google Patents
Method and equipment for contact pressure detection of sealing face of metal-metal sealing joint Download PDFInfo
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- CN102928139A CN102928139A CN2011102311618A CN201110231161A CN102928139A CN 102928139 A CN102928139 A CN 102928139A CN 2011102311618 A CN2011102311618 A CN 2011102311618A CN 201110231161 A CN201110231161 A CN 201110231161A CN 102928139 A CN102928139 A CN 102928139A
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Abstract
The invention relates to a method and equipment for contact pressure detection of a sealing face of a metal-metal sealing joint. The method comprises the following steps that: an electromagnetic ultrasonic transmitting probe and an electromagnetic ultrasonic receiving probe detect a contact state; the receiving probe receives complete reflected wave when the two probes are located at the middle position of the joint, and signal amplitude is maximum; the receiving probe moves rightwards when the transmitting probe gradually moves leftwards, the reflected wave reaches at a chamber of a shoulder face and the sealing face and rightwards transmits after subjected to secondary reflection, the receiving probe begins to not receive the reflected wave, and the signal amplitude is minimum; the reflected wave reaches an extreme value again when the receiving probe leftwards moves until incident wave reaches a non-contact region; and the contact state of the sealing face can be judged to be poor and the probability of leakage is high when the amplitude of the reflected wave received by the receiving probe or the amplitude of the reflected wave secondarily received by the receiving probe is not gradually reduced.
Description
Technical field
The present invention relates to a kind of metal to metal seal joint sealing surface contact pressure detection method and equipment.
Background technology
Petroleum industry is necessary equipment in the exploitation such as oil, gas prospecting with oil pipe, sleeve pipe, especially for the high-voltage and ultra-high gas well, Special threading connector with metal to metal seal, in case sealing surface does not contact, the down-hole string joint must be leaked, with safety and the production capacity benefit of directly impact use.In order to prevent that the down-hole string leakage from occuring, generally adopt the inspection of oil sleeve joint sampling actual loading test evaluation method, the expense that each sample that extracts and test detect all about 1,000,000 yuan, time-consuming 1 month.The direct weighting method that also has the oil field at the scene each connector by using to be added helium carries out that hermetic seal detects, and the dark well testing cost of 5000m is just up to 2,000,000, and each joint detects consuming time more than 5 minutes.That above-mentioned two kinds of methods all exist is with high costs, the problem such as during operating cost, makes troubles to the user.Take full advantage of fast non-destructive detection method the joint of metal to metal seal is carried out the detection of sealing surface contact condition, can solve high, the inefficient problem of cost that existing method exists.
Summary of the invention
The purpose of this invention is to provide a kind of metal to metal seal joint sealing surface contact pressure detection method and equipment, a kind of detection method of utilizing electromagnetic acoustic, can realize with contact Non-Destructive Testing on the oil sleeve joint sealing surface of metal to metal seal structure, can be used for qualitative detection petroleum gas industrial tubing and casing metal sealing joint sealing surface contact and contact length.
Metal to metal seal joint sealing surface contact pressure detection method of the present invention, as shown in Figure 1, carry out the detection of contact condition by electromagnetic acoustic transmitting probe 1 and electromagnetic acoustic receiving transducer 2, incident angle 3 changes the incident wave direction greater than sealing surface angle 4 with the magnetic direction that changes electromagnetic ultrasonic probe.Fig. 1 (a) is the ultrasonic propagation that two probes are in the joint centre position, and this moment, receiving transducer was received complete reflection wave, and signal amplitude is maximum.Probe is mobile gradually left, and probe moves to Fig. 1 (b), and receiving transducer 2 also can move right in the process, reflection wave arrives circular bead surface and sealing surface chamfering place, this moment, reflection wave was propagated to the right behind secondary reflection, and detection probe begins not receive reflection wave, and signal amplitude is minimum.Probe moves to Fig. 1 (c), and receiving transducer also is moved to the left, and begins to detect complete reflection wave.Continue to move to Fig. 1 (d), incident wave arrives the sealing surface place, probe is also mobile gradually with the reflected ultrasonic direction, because sealing surface contact increase gradually, closeness of contact is become better and better, it is more and more higher to project the wave energy that external thread is tending towards from internal thread, and the reflection wave that receiving transducer 2 can receive weakens gradually.To a certain degree again gradually enhancing of back reflection ripple, until incident wave arrives the diagram relief area, reflection wave reaches extreme value again.The reflex amplitude that probe receives and time of reception are shown in Fig. 2 (a).If the reflex amplitude that secondary receives such as Fig. 2 (b), can judge then that the joint sealing surface contact state is bad not such as the gradually reduction process among Fig. 2 (a), the possibility that leakage occurs is larger.
It is that transmitting probe 1 links to each other with small size motor 5 by two small screws respectively with receiving transducer 2 that metal to metal seal joint sealing surface contact pressure of the present invention detects used equipment, two small screws can about adjust the position, small machine 5 is fixed on the screw rod 6, can be on screw rod 6 move left and right, screw rod 6 is connected with motor 7; Motor 7 is fixed on the annular brace 11, annular brace 11 forms an integral body with band tooth annulus 12, and large motor 8 links to each other with clamping rings 13, is fixed on the body surface by screw 9, band tooth annulus 12 places outside the clamping rings 13 by ball 14, and band tooth annulus 12 is meshing with large motor 8.
Large motor 8 rotates by driving band tooth annulus 12 with the tooth 10 on the tooth annulus 12, and band tooth annulus 12 drives clamping rings 13 by ball 14 and rotates; Driving simultaneously annular brace 11, motor 7, screw rod 6, small size motor 5 and 2 probes rotates; Can be first rotary electric machine 7 move detection along axis direction, incident wave returns after arriving relief area, rotates an angle, continues vertically mobile detection, until detect complete circumference.
Metal to metal seal joint sealing surface contact pressure detection method of the present invention has realized with contact Non-Destructive Testing on the oil sleeve joint sealing surface of metal to metal seal structure, can be used for qualitative detection petroleum gas industrial tubing and casing metal sealing joint sealing surface contact and contact length.
Description of drawings
The reflection of Fig. 1 (a) probe box cupling internal surface reflection (b) circular bead surface reflection (c) zone of transition reflection (d) sealing surface.
Pop one's head in reflex amplitude in the moving process and reach the variation of time of Fig. 2
(a) the bad situation of normal condition (b) contact condition
Fig. 3 checkout equipment (a) is (b) hoop perspective view axially.
Wherein: 1, transmitting probe 2, receiving transducer 3, incident angle 4, sealing surface angle 5, small size motor 6, screw rod 7, motor 8, large motor 9, screw 10, tooth 11, support annulus 12, band tooth annulus 13, clamping rings 14, ball a, external thread b, internal thread c, relief area
Embodiment
Can by shown in Figure 3, carry out the detection of oil sleeve joint sealing surface contact condition.Transmitting probe 1 links to each other with small size motor 5 by two small screws respectively with receiving transducer 2, two small screws can about adjust the position, small machine 5 is fixed on the screw rod 6, can be on screw rod 6 move left and right, screw rod 6 is connected with motor 7; Motor 7 is fixed on the annular brace 11, and annular brace 11 forms an integral body with band tooth annulus 12, and large motor 8 links to each other with clamping rings 13, is fixed on the body surface by screw 9, and band tooth annulus 12 places outside the clamping rings 13 by ball 14.
Control motor 7 makes transmitting probe 1 and receiving transducer 2 move to the appropriate location of internal thread a.Receiving transducer 2 is applied pumping signal, control small machine 5, mobile transmitting probe 1 is to the position that can receive ultrasonic signal.Control motor 7 is moved to the left transmitting probe 1 and receiving transducer 2 gradually, the signal that record detects.Behind the relief area c that detects joint, backward rotation motor 7 and small machine 5 reset probe positions, then rotate large motor 8, make probe rotate certain position along the body hoop, restart above-mentioned testing process.After large motor 8 makes annular brace 11 and band tooth annulus 12 rotate a week, can judge by the whole contact condition of butt junction sealing surface.
Claims (2)
1. metal to metal seal joint sealing surface contact pressure detection method is characterized in that:
Carry out the detection of contact condition by electromagnetic acoustic transmitting probe (1) and electromagnetic acoustic receiving transducer (2), incident angle (3) changes the incident wave direction greater than sealing surface angle (4) with the magnetic direction that changes electromagnetic ultrasonic probe; When two probes are in the joint centre position, receiving transducer is received complete reflection wave, and signal amplitude is maximum; Mobile gradually left when transmitting probe (1), receiving transducer (2) moves right, and reflection wave arrives circular bead surface and sealing surface chamfering place, and reflection wave is propagated to the right behind secondary reflection, and receiving transducer begins not receive reflection wave, and signal amplitude is minimum; When receiving transducer is moved to the left, begin to detect complete reflection wave, when incident wave arrives the sealing surface place, receiving transducer is also mobile gradually with the reflected ultrasonic direction, the increase gradually of sealing surface contact, closeness of contact is become better and better, it is more and more higher to project the wave energy that external thread (b) is tending towards from internal thread (a), the reflection wave that receiving transducer (2) receives weakens gradually, to to a certain degree again gradually enhancing of back reflection ripple, until incident wave arrives relief area (c), reflection wave reaches extreme value again; The reflex amplitude that the reflex amplitude that receives when receiving transducer or secondary receive does not reduce process gradually, can judge that then the joint sealing surface contact state is bad, and it is larger that the possibility of leaking occurs.
2. metal to metal seal joint sealing surface contact pressure detection method equipment claimed in claim 1 is characterized in that:
Transmitting probe (1) links to each other with small size motor (5) by two small screws respectively with receiving transducer (2), two small screws can about adjust the position, small machine (5) is fixed on the screw rod (6), can be in the upper move left and right of screw rod (6), screw rod is connected with motor (7); Motor is fixed on the annular brace (11), annular brace 11 forms an integral body with band tooth annulus 12, and large motor 8 links to each other with clamping rings 13, is fixed on the body surface by screw 9, band tooth annulus 12 places outside the clamping rings 13 by ball 14, and band tooth annulus 12 is meshing with large motor 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231161.8A CN102928139B (en) | 2011-08-12 | 2011-08-12 | Method and equipment for contact pressure detection of sealing face of metal-metal sealing joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231161.8A CN102928139B (en) | 2011-08-12 | 2011-08-12 | Method and equipment for contact pressure detection of sealing face of metal-metal sealing joint |
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| Publication Number | Publication Date |
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| CN102928139A true CN102928139A (en) | 2013-02-13 |
| CN102928139B CN102928139B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110231161.8A Active CN102928139B (en) | 2011-08-12 | 2011-08-12 | Method and equipment for contact pressure detection of sealing face of metal-metal sealing joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358113A (en) * | 2018-10-26 | 2019-02-19 | 中海石油(中国)有限公司 | A kind of tubing seal well head device for fast detecting |
| GB2582889A (en) * | 2018-11-29 | 2020-10-14 | Creid 7 Ltd | Ultrasonic reflectometry sensor arrangement |
| CN113203523A (en) * | 2021-04-30 | 2021-08-03 | 中国石油大学(北京) | Method, device and equipment for detecting sealing performance of oil pipe joint |
Citations (5)
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| US4870866A (en) * | 1987-12-31 | 1989-10-03 | Centre For Frontier Engineering Research | Ultrasonic method for measuring internal contact pressure between mating solid parts separated by a liquid film |
| JPH05119026A (en) * | 1991-10-24 | 1993-05-14 | Hitachi Ltd | Method and device for displaying and/or inspecting soldering part |
| JPH08219749A (en) * | 1995-02-13 | 1996-08-30 | Hitachi Plant Eng & Constr Co Ltd | Method and equipment for measuring gap at bottom of socket |
| CN101558297A (en) * | 2006-09-21 | 2009-10-14 | 住友金属工业株式会社 | Ultrasonic testing method of threaded joint of pipes or tubes |
| WO2010113651A1 (en) * | 2009-03-31 | 2010-10-07 | 住友金属工業株式会社 | Method for evaluating connection state of pipe thread coupling, method for pipe thread coupling connection, and device for evaluating connection state of pipe thread coupling |
-
2011
- 2011-08-12 CN CN201110231161.8A patent/CN102928139B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4870866A (en) * | 1987-12-31 | 1989-10-03 | Centre For Frontier Engineering Research | Ultrasonic method for measuring internal contact pressure between mating solid parts separated by a liquid film |
| JPH05119026A (en) * | 1991-10-24 | 1993-05-14 | Hitachi Ltd | Method and device for displaying and/or inspecting soldering part |
| JPH08219749A (en) * | 1995-02-13 | 1996-08-30 | Hitachi Plant Eng & Constr Co Ltd | Method and equipment for measuring gap at bottom of socket |
| CN101558297A (en) * | 2006-09-21 | 2009-10-14 | 住友金属工业株式会社 | Ultrasonic testing method of threaded joint of pipes or tubes |
| WO2010113651A1 (en) * | 2009-03-31 | 2010-10-07 | 住友金属工業株式会社 | Method for evaluating connection state of pipe thread coupling, method for pipe thread coupling connection, and device for evaluating connection state of pipe thread coupling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358113A (en) * | 2018-10-26 | 2019-02-19 | 中海石油(中国)有限公司 | A kind of tubing seal well head device for fast detecting |
| CN109358113B (en) * | 2018-10-26 | 2021-07-27 | 中海石油(中国)有限公司 | Quick detection device of oil pipe leakproofness well head |
| GB2582889A (en) * | 2018-11-29 | 2020-10-14 | Creid 7 Ltd | Ultrasonic reflectometry sensor arrangement |
| CN113203523A (en) * | 2021-04-30 | 2021-08-03 | 中国石油大学(北京) | Method, device and equipment for detecting sealing performance of oil pipe joint |
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| CN102928139B (en) | 2014-08-06 |
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