CN204225791U - Direct linkage type special thread structure tubing and casing - Google Patents
Direct linkage type special thread structure tubing and casing Download PDFInfo
- Publication number
- CN204225791U CN204225791U CN201420564663.1U CN201420564663U CN204225791U CN 204225791 U CN204225791 U CN 204225791U CN 201420564663 U CN201420564663 U CN 201420564663U CN 204225791 U CN204225791 U CN 204225791U
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- China
- Prior art keywords
- thread
- external screw
- internal thread
- screw thread
- antitorque
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
The utility model discloses a kind of direct linkage type special thread structure tubing and casing, described sleeve pipe comprises sealing surface before internal thread, internal thread, sealing surface after internal thread, seal face after external screw thread, external screw thread, seal face before external screw thread, described external screw thread is provided with the antitorque end face of described external screw thread, described internal thread is provided with the antitorque shoulder of described internal thread, in the tight process of machine, described external screw thread engages with the trapezoidal thread of internal thread, after described internal thread, sealing surface seals with seal face before external screw thread and contacts, before described internal thread, sealing surface seals with seal face after external screw thread and contacts, the antitorque end face of described external screw thread and the antitorque shoulder complete matching of internal thread, described internal thread run-out(of thread) is provided with internal thread stress relief grooves.The utility model effectively can play the effect of good well cementation, well workover, antitorque and perforation in the secondary development process of waste and old well, and simply, rationally, safe and convenient to use, double sealing structure can effectively play good sealing effectiveness.
Description
Technical field
The utility model relates to a kind of petroleum casing pipe device, particularly relates to a kind of direct linkage type special thread structure tubing and casing.
Background technology
In oil development process, have a lot of old well, dried-up well, conventional sleeve pipe, due to external diameter and box cupling reason, is difficult to the exploitation meeting waste and old well, shines into great waste to national wealth.
Given this, a kind of direct linkage type special thread structure tubing and casing is provided, to meet the demand of waste and old well development.
Summary of the invention
The purpose of this utility model is to provide a kind of direct linkage type special thread structure tubing and casing, to solve in oil development process, has a lot of old well, dried-up well, conventional sleeve pipe, due to external diameter and box cupling reason, is difficult to the exploitation meeting waste and old well, shines into the problem of waste greatly to national wealth.
For realizing the purpose of this utility model, the utility model provides a kind of direct linkage type special thread structure tubing and casing, described sleeve pipe comprises sealing surface 1 before internal thread, internal thread 2 and internal thread stress relief grooves 3, sealing surface 4 after internal thread, the antitorque shoulder 5 of internal thread, seal face 6 after external screw thread, external screw thread 7, seal face 8 before external screw thread, the antitorque end face 9 of external screw thread, described external screw thread 7 is provided with the antitorque end face 9 of described external screw thread, described internal thread 2 is provided with the antitorque shoulder 5 of described internal thread, in the tight process of machine, described external screw thread 7 engages with the trapezoidal thread of internal thread 2, after described internal thread, sealing surface 4 seals with seal face before external screw thread 8 and contacts, before described internal thread, sealing surface 1 seals with seal face after external screw thread 6 and contacts, the antitorque end face of described external screw thread 9 and internal thread antitorque shoulder 5 complete matching, described internal thread 2 run-out(of thread) is provided with internal thread stress relief grooves 3.
The beneficial effects of the utility model are, compared with the prior art, owing to have employed straight-connecting sleeve pipe, the effect of good well cementation, well workover, antitorque and perforation effectively can be played in the secondary development process of waste and old well, and it is simple, reasonable, safe and convenient to use, double sealing structure can effectively play good sealing effectiveness.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
In figure: sealing surface before 1-internal thread, 2-internal thread, 3-internal thread stress relief grooves, sealing surface after 4-internal thread, the antitorque shoulder of 5-internal thread, seal face after 6-external screw thread, 7-external screw thread, seal face before 8-external screw thread, the antitorque end face of 9-external screw thread.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be understood to specific embodiment described herein only in order to explain the utility model, be not limited to protection domain of the present utility model.
As shown in Figure 1, the utility model provides a kind of direct linkage type special thread structure tubing and casing, described sleeve pipe comprises sealing surface 1 before internal thread, internal thread 2 and internal thread stress relief grooves 3, sealing surface 4 after internal thread, the antitorque shoulder 5 of internal thread, seal face 6 after external screw thread, external screw thread 7, seal face 8 before external screw thread, the antitorque end face 9 of external screw thread, described external screw thread 7 is provided with the antitorque end face 9 of described external screw thread, described internal thread 2 is provided with the antitorque shoulder 5 of described internal thread, in the tight process of machine, described external screw thread 7 engages with the trapezoidal thread of internal thread 2, after described internal thread, sealing surface 4 seals with seal face before external screw thread 8 and contacts, before described internal thread, sealing surface 1 seals with seal face after external screw thread 6 and contacts, the antitorque end face of described external screw thread 9 and internal thread antitorque shoulder 5 complete matching, described internal thread 2 run-out(of thread) is provided with internal thread stress relief grooves 3.
It should be noted that, the utility model provides a kind of straight-connecting sleeve pipe, and described direct linkage type is the connection between finger sleeve and sleeve pipe, without the need to being connected by box cupling, the helicitic texture at sleeve pipe two ends can be utilized directly to connect; Above-mentioned " special thread structure " refers to, the technical solution of the utility model is different from existent technique scheme, is a kind of new helicitic texture, has particularity, without other intensions; After described internal thread sealing surface contacts with outside thread sealing surface, the antitorque shoulder of internal thread 5 aligns with the antitorque end face 9 of external screw thread, plays torque resistant effect; Internal thread 2 run-out(of thread) is provided with stress relief grooves 3, effectively improves stress and concentrates, improve supporting capacity.
In a preferred embodiment, described external screw thread 7 all adopts trapezoidal thread with internal thread 2, and such design adds bonding strength.
The utility model is owing to have employed straight-connecting sleeve pipe, can effectively play in the secondary development process of waste and old well good well cementation, well workover, antitorque and perforation feature and the utility model is simple and reasonable for structure, safe and convenient to use, double sealing structure can effectively play good sealing effectiveness.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. a direct linkage type special thread structure tubing and casing, it is characterized in that, described sleeve pipe comprises sealing surface (1) before internal thread, internal thread (2) and internal thread stress relief grooves (3), sealing surface (4) after internal thread, the antitorque shoulder of internal thread (5), seal face (6) after external screw thread, external screw thread (7), seal face (8) before external screw thread, the antitorque end face of external screw thread (9), described external screw thread (7) is provided with the antitorque end face of described external screw thread (9), described internal thread (2) is provided with the antitorque shoulder of described internal thread (5), in the tight process of machine, described external screw thread (7) engages with the trapezoidal thread of internal thread (2), after described internal thread, sealing surface (4) seals with seal face before external screw thread (8) and contacts, (1 to seal with seal face after external screw thread (6) and contacts for sealing surface before described internal thread, the antitorque end face of described external screw thread (9) and the antitorque shoulder of internal thread (5) complete matching, described internal thread (2) run-out(of thread) is provided with internal thread stress relief grooves (3).
2. direct linkage type special thread structure tubing and casing according to claim 1, is characterized in that, described external screw thread (7) and internal thread (2) all adopt trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564663.1U CN204225791U (en) | 2014-09-28 | 2014-09-28 | Direct linkage type special thread structure tubing and casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564663.1U CN204225791U (en) | 2014-09-28 | 2014-09-28 | Direct linkage type special thread structure tubing and casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204225791U true CN204225791U (en) | 2015-03-25 |
Family
ID=52923900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420564663.1U Expired - Lifetime CN204225791U (en) | 2014-09-28 | 2014-09-28 | Direct linkage type special thread structure tubing and casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204225791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265191A (en) * | 2014-09-28 | 2015-01-07 | 天津德华石油装备制造有限公司 | TTGM-7 directly-connected special thread structure oil casing |
-
2014
- 2014-09-28 CN CN201420564663.1U patent/CN204225791U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265191A (en) * | 2014-09-28 | 2015-01-07 | 天津德华石油装备制造有限公司 | TTGM-7 directly-connected special thread structure oil casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150325 |
|
| CX01 | Expiry of patent term |