CN201246115Y - Seal plug-in joint - Google Patents
Seal plug-in joint Download PDFInfo
- Publication number
- CN201246115Y CN201246115Y CNU2008201255084U CN200820125508U CN201246115Y CN 201246115 Y CN201246115 Y CN 201246115Y CN U2008201255084 U CNU2008201255084 U CN U2008201255084U CN 200820125508 U CN200820125508 U CN 200820125508U CN 201246115 Y CN201246115 Y CN 201246115Y
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- CN
- China
- Prior art keywords
- ring
- joint
- spacer
- sealing
- cannelure
- 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
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Abstract
The utility model relates to a sealing insertion joint used in oil cementing completion operation, which consists of a casing collar (1), a body (2), a stopper ring (3), a sealing material (4), a caulking ring (5), a clasp (6) and a lower joint (7); the casing collar (1) is screwed with the body (2); the body (2) is in the shape of a ladder; the stopper ring (3) and the caulking ring (5) are at interval sleeved on the body (2); the sealing material (4) is installed in a slot at the outer part of the stopper ring (3); ring shaped slots matched with each other are formed at both the outer part of the body (2) and the inner part of the caulking ring (5), and form a cylindrical hole with a circular or polygon section; the clasp (6) is installed in the ring shaped slots; radial permeable slots corresponding to the caulking ring (5) are formed at the ring shaped slots at the inner part of the caulking ring (5); the upper end of the lower joint (7) is screwed with the body (2) through screw threads; and the upper end surface of the lower joint (7) is partially cut, and the cutting face forms an acute angle with the direction of the axis. The joint has the advantages of simple structure, convenient construction operation, and sealability and reliability.
Description
Technical field
The utility model relates to the solid completion practice instrument of oil gas field, inserts joint especially for a kind of sealing of tail tube hanging well cementation tieback operation, belongs to the downhole tool class.
Background technology
At present, carry out that deep-well, prospect pit or gas well protective casing or production string are solid, in the completion practice process, because of rig load limited or because of borehole size little and well depth causes circulating and presses the influence of the high various factors of consumption, often select the mode of drilling liner cementing to carry out the solid completion practice of production string or protective casing.After the solid completion of tail pipe, sometimes need again to determine whether adopting sleeve pipe tieback technology to satisfy the safety in production requirement according to payzone situation and the later stage condition of production etc., and when carrying out the operation of sleeve pipe tieback, it is one of key factor that guarantees sealing of sleeve pipe tieback place and bearing capacity that joint is inserted in sealing.It is pressure-tight weak spot in the whole tubing string that joint is inserted in sealing, and there is the not tight problem of wiper seal in present relevant product in using at the scene.
Summary of the invention
The purpose of this utility model be to provide a kind of be applicable to that tieback is used after the solid completion of tail pipe can the reliable sealing sealing insert joint.
For achieving the above object, the technical solution adopted in the utility model is: mainly by casing coupling, body, baffle ring, encapsulant, spacer ring, snap ring, lower contact is formed, between casing coupling and the body to be threaded, body is stepped, baffle ring and spacer ring spacer sleeve are contained on the body, encapsulant is installed in the outer grooves of baffle ring by the mode of moulding, cannelure is all left in the outside of body and the inside of spacer ring, and cannelure is adaptive mutually, form the cylindrical hole of cross section for the circle shape, the snap ring of split ring is contained in the cannelure, spacer ring with the corresponding position of inner circular trough on saturating groove is arranged radially, the upper end of lower contact is connected with body by screw thread, the cutting of its lower surface part, and cutting face and axis direction are acute angle-shaped; The cross section of snap ring also can be polygon; Baffle ring and spacer ring should be at least 1 respectively.
The utility model beneficial effect is: simple in structure, construction operation is convenient, sealing is reliable.
Description of drawings
Fig. 1 is the utility model structural representation.
Specific embodiments
Below in conjunction with accompanying drawing the utility model is described further.
Sealing is inserted joint mainly by casing coupling 1, body 2, baffle ring 3, encapsulant 4, spacer ring 5, snap ring 6, lower contact 7 is formed, between casing coupling 1 and the body 2 to be threaded, body 2 is stepped, baffle ring 3 is contained on the body 1 with spacer ring 5 spacer sleeves, encapsulant is installed in the outer grooves of baffle ring by the mode of moulding, cannelure is all left in the inside of the outside of body 2 and spacer ring 5, and cannelure is adaptive mutually, form the cylindrical hole of cross section for the circle shape, the snap ring 6 of split ring is contained in the cannelure, spacer ring 5 with the corresponding position of inner circular trough on saturating groove is arranged radially, the upper end of lower contact 7 is connected with body 2 by screw thread, part cutting of its lower surface, and cutting face and axis direction are acute angle-shaped; The cross section of snap ring 6 also can be polygon-shaped.Baffle ring 3 and spacer ring 5 should be at least 1 respectively, and its quantity can be adjusted according to field demand.
Its operating principle is: before the sleeve pipe tieback is gone into well, the utility model is connected the lowermost end of tie-back casing; Down to predetermined well depth the time, begin to carry out cementing well, after well cementing operation finishes, transfer tubing string and make sealing insert joint to enter the tieback tube, promptly finished entire job.
Claims (3)
1. joint is inserted in a sealing, mainly by casing coupling (1), body (2), baffle ring (3), encapsulant (4), spacer ring (5), snap ring (6), lower contact (7) is formed, it is characterized in that: between casing coupling (1) and the body (2) to be threaded, body (2) is stepped, baffle ring (3) is contained on the body (2) with spacer ring (5) spacer sleeve, encapsulant (4) is installed in the outer grooves of baffle ring (3) by the mode of moulding, cannelure is all left in the inside of the outside of body (2) and spacer ring (5), and cannelure is adaptive mutually, form the cylindrical hole of cross section for the circle shape, the snap ring of split ring (6) is contained in the cannelure, spacer ring (5) with the corresponding position of inner circular trough on saturating groove is arranged radially, the upper end of lower contact (7) is connected with body (2) by screw thread, part cutting of its lower surface, and cutting face and axis direction are acute angle-shaped.
2. joint is inserted in a kind of sealing according to claim 1, and it is characterized in that: the cross section of snap ring (6) also can be polygon.
3. joint is inserted in a kind of sealing according to claim 1, and it is characterized in that: baffle ring (3) and spacer ring (5) that spacer sleeve is contained on the body (2) should be at least 1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201255084U CN201246115Y (en) | 2008-06-30 | 2008-06-30 | Seal plug-in joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201255084U CN201246115Y (en) | 2008-06-30 | 2008-06-30 | Seal plug-in joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246115Y true CN201246115Y (en) | 2009-05-27 |
Family
ID=40729935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201255084U Expired - Fee Related CN201246115Y (en) | 2008-06-30 | 2008-06-30 | Seal plug-in joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201246115Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392615A (en) * | 2011-11-29 | 2012-03-28 | 中国石油集团长城钻探工程有限公司 | Oil pipe tie-back insertion sealing device |
| CN103016731A (en) * | 2012-12-18 | 2013-04-03 | 安东石油技术（集团）有限公司 | Sealing ring used for tieback plug |
| CN103015911A (en) * | 2012-11-29 | 2013-04-03 | 中国石油集团长城钻探工程有限公司 | Articulated oil tube tie-back sealing device |
| CN103015912A (en) * | 2012-12-18 | 2013-04-03 | 安东石油技术（集团）有限公司 | Tieback plug |
-
2008
- 2008-06-30 CN CNU2008201255084U patent/CN201246115Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392615A (en) * | 2011-11-29 | 2012-03-28 | 中国石油集团长城钻探工程有限公司 | Oil pipe tie-back insertion sealing device |
| CN103015911A (en) * | 2012-11-29 | 2013-04-03 | 中国石油集团长城钻探工程有限公司 | Articulated oil tube tie-back sealing device |
| CN103016731A (en) * | 2012-12-18 | 2013-04-03 | 安东石油技术（集团）有限公司 | Sealing ring used for tieback plug |
| CN103015912A (en) * | 2012-12-18 | 2013-04-03 | 安东石油技术（集团）有限公司 | Tieback plug |
| CN103015912B (en) * | 2012-12-18 | 2016-03-02 | 安东石油技术（集团）有限公司 | Tieback plug |
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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: 20090527 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |