CN102928139B - 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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- CN102928139B CN102928139B CN201110231161.8A CN201110231161A CN102928139B CN 102928139 B CN102928139 B CN 102928139B CN 201110231161 A CN201110231161 A CN 201110231161A CN 102928139 B CN102928139 B CN 102928139B
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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
For petroleum industry, oil pipe, sleeve pipe are the necessary equipments in the exploitation such as oil, gas prospecting, especially for high-voltage and ultra-high gas well, with the Special threading connector of metal to metal seal, once sealing surface does not contact, down-hole string joint must be leaked, and will directly affect safety and the production capacity benefit of use.In order to prevent that down-hole string leakage from occurring, generally adopt the inspection of oil sleeve joint sampling actual loading test evaluation method, the expense that each sample extracting and test detect, all 1,000,000 yuan of left and right, time-consuming 1 month.Also the direct weighting method that has oil field at the scene each connector by using to be added to helium is carried out hermetic seal detection, 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 when operating cost, makes troubles to user.Make full use of fast non-destructive detection method carries out sealing surface contact condition detection to the joint of metal to metal seal, can solve high, the inefficient problem of cost that existing method exists.
Summary of the invention
The object 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, contact Non-Destructive Testing on the oil sleeve joint sealing surface with metal to metal seal structure be can realize, qualitative detection petroleum gas industrial tubing and casing metal sealing joint sealing surface contact and contact length can be used for.
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 is greater than sealing surface angle 4, changes incident wave direction with changing the magnetic direction of electromagnetic ultrasonic probe.Fig. 1 (a) is the ultrasonic propagations of two probes in joint centre position, and now receiving transducer is received complete reflection wave, signal amplitude maximum.Probe moves left gradually, and probe moves to Fig. 1 (b), and in process, receiving transducer 2 also can move right, reflection wave arrives circular bead surface and sealing surface chamfering place, now reflection wave is propagated to the right after secondary reflection, and detection probe starts not receive reflection wave, signal amplitude minimum.Probe moves to Fig. 1 (c), and receiving transducer is also moved to the left, and starts to detect complete reflection wave.Continue to move to Fig. 1 (d), incident wave arrives sealing surface place, probe also moves gradually with reflected ultrasonic direction, due to the increase gradually of sealing surface contact, closeness of contact is become better and better, project from internal thread the wave energy that external thread is tending towards more and more higher, the reflection wave that receiving transducer 2 can receive weakens gradually.Back reflection ripple strengthens again gradually to a certain extent, until incident wave arrives diagram relief area, reflection wave reaches extreme value again.The reflex amplitude that probe receives and time of reception are as shown in Fig. 2 (a).If the reflex amplitude that secondary receives is not as the reduction process gradually in Fig. 2 (a), as Fig. 2 (b), can judge that joint sealing surface contact state is bad, the possibility that leakage occurs is larger.
It is that transmitting probe 1 is connected 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 equipment used, two small screws can be adjusted position in left and right, small machine 5 is fixed on screw rod 6, can on screw rod 6, move left and right, screw rod 6 is connected with motor 7; Motor 7 is fixed in annular brace 11, annular brace 11 forms an entirety with band tooth annulus 12, and large motor 8 is connected with clamping rings 13, is fixed on body surface by screw 9, band tooth annulus 12 is placed in outside clamping rings 13 by ball 14, and band tooth annulus 12 is meshing with large motor 8.
Large motor 8 drives band tooth annulus 12 to rotate by the tooth 10 with on tooth annulus 12, and band tooth annulus 12 drives clamping rings 13 to rotate by ball 14; Drive annular brace 11, motor 7, screw rod 6,5 and 2 probes of small size motor to rotate simultaneously; Can move detection along axis direction by first rotary electric machine 7, incident wave returns after arriving relief area, rotates an angle, continues mobile detection vertically, until detect complete circumference.
Metal to metal seal joint sealing surface contact pressure detection method of the present invention has realized contact Non-Destructive Testing on the oil sleeve joint sealing surface with 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.
Brief description of the 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 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 Fig. 3, carry out the detection of oil sleeve joint sealing surface contact condition.Transmitting probe 1 is connected with small size motor 5 by two small screws respectively with receiving transducer 2, and two small screws can be adjusted position in left and right, and small machine 5 is fixed on screw rod 6, can on screw rod 6, move left and right, and screw rod 6 is connected with motor 7; Motor 7 is fixed in annular brace 11, and annular brace 11 forms an entirety with band tooth annulus 12, and large motor 8 is connected with clamping rings 13, is fixed on body surface by screw 9, and band tooth annulus 12 is placed in outside clamping rings 13 by ball 14.
Control motor 7, make transmitting probe 1 and receiving transducer 2 move to the appropriate location of internal thread a.Receiving transducer 2 is applied to pumping signal, control small machine 5, mobile transmitting probe 1 is to the position that can receive ultrasonic signal.Control motor 7, be moved to the left gradually transmitting probe 1 and receiving transducer 2, the signal that record detects.When detecting after the relief area c of joint, rotate backward motor 7 and small machine 5, probe positions is resetted, then rotate large motor 8, make probe rotate certain position along body hoop, restart above-mentioned testing process.Rotate after one week when large motor 8 makes annular brace 11 and band tooth annulus 12, can judge by butt junction sealing surface entirety contact condition.
Claims (2)
1. a 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) is greater than sealing surface angle (4), by the magnetic direction change incident wave direction that changes electromagnetic ultrasonic probe; When two probes are in joint centre position, receiving transducer is received complete reflection wave, signal amplitude maximum; When transmitting probe (1) moves left gradually, 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 after secondary reflection, and receiving transducer starts not receive reflection wave, signal amplitude minimum; When receiving transducer is moved to the left, start to detect complete reflection wave, when incident wave arrives sealing surface place, receiving transducer also moves gradually with reflected ultrasonic direction, the increase gradually of sealing surface contact, closeness of contact is become better and better, project from internal thread (a) wave energy that external thread (b) is tending towards more and more higher, the reflection wave that receiving transducer (2) receives weakens gradually, back reflection ripple strengthens again gradually to a certain extent, until incident wave arrives relief area (c), reflection wave reaches extreme value again; The reflex amplitude that the reflex amplitude receiving when receiving transducer or secondary receive does not reduce process gradually, can judge that joint sealing surface contact state is bad, the possibility of leaking occurs larger.
2. a metal to metal seal joint sealing surface contact pressure detection method equipment claimed in claim 1, is characterized in that:
Transmitting probe (1) is connected with small size motor (5) by two small screws respectively with receiving transducer (2), two small screws can be adjusted position in left and right, it is upper that small size motor (5) is fixed on screw rod (6), can on screw rod (6), move left and right, and screw rod is connected with motor (7); Motor is fixed in annular brace (11), annular brace (11) forms an entirety with band tooth annulus (12), large motor (8) is connected with clamping rings (13), be fixed on body surface by screw (9), band tooth annulus (12) is placed in outside 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 CN102928139A (en) | 2013-02-13 |
| CN102928139B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113203523B (en) * | 2021-04-30 | 2022-07-01 | 中国石油大学(北京) | Method, device and equipment for detecting sealing performance of oil pipe joint |
Citations (2)
| 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 |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3011246B2 (en) * | 1991-10-24 | 2000-02-21 | 株式会社日立製作所 | Solder part display method, solder part inspection method and apparatus therefor |
| JPH08219749A (en) * | 1995-02-13 | 1996-08-30 | Hitachi Plant Eng & Constr Co Ltd | Method and equipment for measuring gap at bottom of socket |
| JP5517031B2 (en) * | 2009-03-31 | 2014-06-11 | 新日鐵住金株式会社 | Fastening state evaluation method of threaded joint of pipe, fastening method of threaded joint of pipe, and fastening state evaluation device of threaded joint of pipe |
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- 2011-08-12 CN CN201110231161.8A patent/CN102928139B/en active Active
Patent Citations (2)
| 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 |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平5-119026 1993.05.14 |
| JP特开平8-219749 1996.08.30 |
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