CN203188922U - Hermetic seal buckle profile - Google Patents
Hermetic seal buckle profile Download PDFInfo
- Publication number
- CN203188922U CN203188922U CN 201320075151 CN201320075151U CN203188922U CN 203188922 U CN203188922 U CN 203188922U CN 201320075151 CN201320075151 CN 201320075151 CN 201320075151 U CN201320075151 U CN 201320075151U CN 203188922 U CN203188922 U CN 203188922U
- Authority
- CN
- China
- Prior art keywords
- internal thread
- hermetic seal
- screw thread
- thread
- external screw
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to a hermetic seal buckle profile, in particular to a high pressure hermetic seal connecting structure of an oil well pipe. The hermetic seal buckle profile comprises a pipe body and a coupling. The pipe body is provided with a 1:16 taper type external thread. The end portion of the external thread is provided with a cylindrical surface, a 1:10 conical surface and a -15-degree torque circular bead in a machined mode. The coupling is provided with a 1:16 taper type internal thread. The tail end of the internal thread in the middle of the coupling is provided with a cylindrical surface, a 1:10 conical surface and a -15-degree torque circular bead in a machined mode. The external thread is in interference fit with the internal thread. The conical surface on the external thread is in interference fit with the conical surface on the internal thread. The -15-degree torque circular bead on the external thread is in interference fit with the -15-degree torque circular bead on the internal thread. Compared with the prior art, the hermetic seal buckle profile plays a main role in sealing mainly through the interference fit between the conical surfaces, and the threads mainly play a role in connection. The -15-degree torque circular beads also play a role in the sealing to improve the sealing effect. Meanwhile, the -15-degree torque circular beads have good capability in resisting excessive torque, bending and axial loads, thereby being superior to right-angle circular beads.
Description
Technical field
The utility model relates to a kind of hermetic seal button-type, particularly oil well pipe high pressure gas sealed attachment structure.
Background technology
In the oil and gas exploitation, reach several kms by the tubing string that is threaded, and tubing string bears external and internal pressure and various combined load, being threaded is the weak link of whole tubing string.Natural gas extraction in recent years and Hot dishes steam are infused in and increase sharply, and improve gas tightness and have become the requirement that double thread connects.Because natural gas leaks from screw connection point than oil well is easier, and the pressure of gas well is often very high, the natural gas well pressure that has even reach MPas up to a hundred, and at this moment common API thread connection has not reached instructions for use, often leak, cause serious consequence.
As shown in Figure 1, the thread connection of existing sleeve pipe generally adopts the API joint, and its structure is made up of body and box cupling, and external screw thread is arranged on the body, and internal thread is arranged on the box cupling.According to API(American Petroleum Institute (API)) the standard processing and manufacturing.Its shortcoming has: 1, poor sealing performance, because structure design, the interference fit of internal and external threads has played connection and sealing function, even but under the tight situation of machine, still there is the gap between the internal and external threads, influences sealing performance, poorer to the performance of hermetic seal especially.2, the easy thread gluing of torque resistant poor performance, because stress level is higher, stress is concentrated obviously, is easy to take place thread gluing and loses efficacy.
Summary of the invention
The purpose of this utility model is above-mentioned defective and the deficiency that overcomes prior art, and a kind of good gas sealing ability that has is provided, the sleeve pipe hermetic seal button-type that is easy to process.
The technical scheme that realizes above-mentioned purpose is: a kind of hermetic seal button-type, it is made up of body and box cupling two parts, the tapered external screw thread of 1:16 is arranged on the body, thread head is processed with the face of cylinder, 1:10 taper seat and-15 ° of torque shoulder, the tapered internal thread of 1:16 is arranged on the box cupling, and box cupling middle part screw thread tail end is processed with the face of cylinder, 1:10 taper seat and-15 ° of torque shoulder.-15 ° of torque shoulder on taper seat on external screw thread and internal thread, the external screw thread and the taper seat on the internal thread, the external screw thread and-15 ° of torque shoulder on the internal thread form interference fit respectively.
Axial magnitude of interference control between the external screw thread of body and the internal thread of box cupling is between 0.5～6mm.
Axial magnitude of interference control between the taper seat of body and the taper seat of box cupling is between 3.8～9.2mm.
The transition arc R1=1mm of the outer conical surface of body and torque shoulder, the transition arc R2=0.9mm of the internal conical surface of box cupling and torque shoulder.
There is certain interval between the external cylindrical surface of body and the inner cylinder face of box cupling.
The inner surface of body end is made of the face of cylinder and taper seat, and tapering is 15 °.
The utility model is compared with prior art mainly born main sealing function by the interference fit between taper seat and the taper seat, and screw thread is mainly born anastomosis.-15 ° of shoulders also participate in sealing function, have improved sealing effectiveness, and this torque shoulder has the good anti-ability of crossing torque capability and counter-bending and axial load simultaneously, is better than the right angle shoulder.The internal diameter basically identical of the internal diameter of tube end and box cupling, and the pipe end inner surface processed the conical surface, avoided the pipe inner fluid to produce turbulent flow, and downhole tool is lowered to smoothly.
With the specific embodiment content of the present utility model is further described by reference to the accompanying drawings.
Description of drawings
Fig. 1 is existing sleeve pipe draw bail schematic diagram;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the B portion enlarged drawing of pipe in the accompanying drawing 2;
Fig. 4 is the B portion enlarged drawing of box cupling in the accompanying drawing 2;
Fig. 5 is the A portion enlarged drawing of pipe in the accompanying drawing 2;
Fig. 6 is the A portion enlarged drawing of box cupling in the accompanying drawing 2.
The specific embodiment
Embodiment 1
Shown in Fig. 2-6, a kind of sleeve pipe for Ф 139.7 * 9.17mm, grade of steel are P110, and the physical dimension of sleeve pipe body comprises that external diameter, wall thickness etc. all adopt API standard gauge definite value, shell material to satisfy the API standard to the requirement of P110 steel-grade bushing material.
This petroleum casing pipe hermetic seal button-type structure is made up of body 1 and box cupling 2 two parts, the tapered external screw thread 1-1 of 1:16 is arranged on the body 1, external screw thread 1-1 end is processed with the face of cylinder 1-2,1:10 taper seat 1-3 and-15 ° of torque shoulder 1-4, the tapered internal thread 2-1 of 1:16 is arranged on the box cupling 2, and box cupling 2 middle part screw thread tail ends are processed with the face of cylinder 2-2,1:10 taper seat 2-3 and-15 ° of torque shoulder 2-4.Taper seat 1-3 on external screw thread 1-1 and internal thread 2-1, the external screw thread 1-1 and-15 ° of torque shoulder 2-4 on the taper seat 2-3 on the internal thread 2-1 ,-15 ° of torque shoulder on the external screw thread 1-1 1-4 and the internal thread 2-1 form interference fit respectively.2-1 axial magnitude of interference control of external screw thread 1-1 and internal thread is between 0.5～4.5mm.Axial magnitude of interference control between taper seat 1-3 and the taper seat 2-3 is between 3.8～6.5mm.
The externally threaded space width w1 control of body 1 is at 2.54+0.12 0mm, and the facewidth w2 of external screw thread 1-1 controls at 2.540-0.12mm; The space width n1 control of the internal thread 2-1 of box cupling 2 is at 2.67+0.12 0mm, and the screw thread facewidth n2 of the external screw thread 1-1 of body 1 controls at 2.410-0.12mm; External screw thread 1-1 tooth depth h1 control of body 1 is at 1.575 ± 0.037mm, and internal thread 2-1 tooth depth h2 of box cupling 2 is built in 1.775 ± 0.037mm; Bearing surface angle a1 is 3 °, and guide surface angle a1 is 10 °, and pitch (p) is 5.08mm.
As shown in the figure, a kind of sleeve pipe for Ф 339.7 * 13.06mm, grade of steel are P110, and the physical dimension of sleeve pipe body comprises that external diameter, wall thickness etc. all adopt API standard gauge definite value, shell material to satisfy the API standard to the requirement of P110 steel-grade bushing material.
This petroleum casing pipe hermetic seal button-type structure is made up of body 1 and box cupling 2 two parts, the tapered external screw thread 1-1 of 1:16 is arranged on the body 1, external screw thread 1-1 end is processed with the face of cylinder 1-2,1:10 taper seat 1-3 and torque shoulder 1-4, the tapered internal thread 2-1 of 1:16 is arranged on the box cupling 2, and box cupling 2 middle part screw thread tail ends are processed with the face of cylinder 2-2,1:10 taper seat 2-3 and torque shoulder 2-4.Taper seat 1-3 on external screw thread 1-1 and internal thread 2-1, the external screw thread 1-1 and-15 ° of torque shoulder 2-4 on the taper seat 2-3 on the internal thread 2-1 ,-15 ° of torque shoulder on the external screw thread 1-1 1-4 and the internal thread 2-1 form interference fit respectively.Axial magnitude of interference control between external screw thread 1-1 and the internal thread 2-1 is between 1.5～5.5mm.Axial magnitude of interference control between taper seat 1-3 and the taper seat 2-3 is between 6.5～9.2mm.
The externally threaded space width w1 control of body 1 is at 2.54+0.12 0mm, and the facewidth w2 of external screw thread 1-1 controls at 2.540-0.12mm; The space width n1 control of the internal thread 2-1 of box cupling 2 is at 2.67+0.12 0mm, and the screw thread facewidth n2 of the external screw thread 1-1 of body 1 controls at 2.410-0.12mm; External screw thread 1-1 tooth depth h1 control of body 1 is at 1.575 ± 0.037mm, and internal thread 2-1 tooth depth h2 of box cupling 2 is built in 1.775 ± 0.037mm; Bearing surface angle a1 is 3 °, and guide surface angle a1 is 10 °, and pitch (p) is 5.08mm.
Claims (5)
1. hermetic seal button-type, comprise by body and box cupling, it is characterized in that: the tapered external screw thread of 1:16 is arranged on the body, the external screw thread end is provided with the face of cylinder, 1:10 taper seat and-15 ° of torque shoulder, the tapered internal thread of 1:16 is arranged on the box cupling, box cupling middle part internal thread tail end is processed with the face of cylinder, 1:10 taper seat and-15 ° of torque shoulder, and-15 ° of torque shoulder on the taper seat on external screw thread and internal thread, the external screw thread and the taper seat on the internal thread, the external screw thread and-15 ° of torque shoulder on the internal thread form interference fit respectively.
2. hermetic seal button-type according to claim 1 is characterized in that: the axial magnitude of interference control between the external screw thread of body and the internal thread of box cupling is between 0.5～6mm.
3. hermetic seal button-type according to claim 1 is characterized in that: the axial magnitude of interference control between the taper seat of body and the taper seat of box cupling is between 3.8～9.2mm.
4. according to claim 1 or 2 or 3 described hermetic seal button-types, it is characterized in that: the transition arc R1=1mm of the outer conical surface of body and torque shoulder, the transition arc R2=0.9mm of the internal conical surface of box cupling and torque shoulder.
5. according to claim 1 or 2 or 3 described hermetic seal button-types, it is characterized in that: the inner surface of body end is made of the face of cylinder and taper seat, and tapering is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075151 CN203188922U (en) | 2013-02-18 | 2013-02-18 | Hermetic seal buckle profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075151 CN203188922U (en) | 2013-02-18 | 2013-02-18 | Hermetic seal buckle profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203188922U true CN203188922U (en) | 2013-09-11 |
Family
ID=49105788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320075151 Expired - Fee Related CN203188922U (en) | 2013-02-18 | 2013-02-18 | Hermetic seal buckle profile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203188922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716369A (en) * | 2018-06-28 | 2018-10-30 | 无锡西姆莱斯石油专用管制造有限公司 | A kind of casing thread connection of multi-sealed hook-type screw thread |
| JP2022540956A (en) * | 2019-07-19 | 2022-09-20 | ヴァルレック オイル アンド ガス フランス | Threaded connection with asymmetric helical profile |
-
2013
- 2013-02-18 CN CN 201320075151 patent/CN203188922U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716369A (en) * | 2018-06-28 | 2018-10-30 | 无锡西姆莱斯石油专用管制造有限公司 | A kind of casing thread connection of multi-sealed hook-type screw thread |
| JP2022540956A (en) * | 2019-07-19 | 2022-09-20 | ヴァルレック オイル アンド ガス フランス | Threaded connection with asymmetric helical profile |
| JP7338033B2 (en) | 2019-07-19 | 2023-09-04 | ヴァルレック オイル アンド ガス フランス | Threaded connection with asymmetric helical profile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202946041U (en) | Zigzag air-sealed oil well pipe thread joint structure | |
| CN201507731U (en) | Oil casing threaded connection joint | |
| CN203531777U (en) | High-quality airtight seal oil casing threaded joint | |
| CN201496003U (en) | Thread connector of special oil sleeve | |
| CN202673174U (en) | High seal special buttress thread pipe connector | |
| CN202300224U (en) | High-sealing anti-screw expansion drill rod joint | |
| CN201412076Y (en) | Oil sleeve connector | |
| CN102678065A (en) | High-airtightness special buttress thread pipe joint | |
| CN203188922U (en) | Hermetic seal buckle profile | |
| CN201982024U (en) | Casing gas seal screwed nipples for gas well | |
| CN201502335U (en) | Oil sleeve joint | |
| CN101899953A (en) | Thread joint structure for high-performance oil casing | |
| CN202673178U (en) | High-sealing buttress threaded conduit connecting joint | |
| CN202125258U (en) | Oil sleeve connector with high sealing performance and thread-gluing resistance | |
| CN201751527U (en) | Hermetic seal drill pipe joint with good torsion resistance performance | |
| CN203403832U (en) | Air-tight seal screwed joint | |
| CN104060946A (en) | Ultrahigh torsion-resistance metal airtight drill rod joint | |
| CN203188921U (en) | Air-tight seal buckling mold | |
| CN202176273U (en) | High-temperature high-pressure petroleum casing pipe thread connector | |
| CN203403831U (en) | Direct-connecting oil casing pipe threaded connector | |
| CN103362459A (en) | Arc-shaped conical surface sealed variable tooth wide wedge-type coupling structure and oil well pipe structure | |
| CN209369742U (en) | A kind of tubing and casing Hermetical connecting structure | |
| CN203285354U (en) | Petroleum casing pipe threaded connector | |
| CN108756773B (en) | Directly-connected oil casing threaded joint structure | |
| CN203008801U (en) | Whole type oil pipe joint with air-tight seal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20220218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |