CN2154904Y - Sleeve connector - Google Patents
Sleeve connector Download PDFInfo
- Publication number
- CN2154904Y CN2154904Y CN 93211863 CN93211863U CN2154904Y CN 2154904 Y CN2154904 Y CN 2154904Y CN 93211863 CN93211863 CN 93211863 CN 93211863 U CN93211863 U CN 93211863U CN 2154904 Y CN2154904 Y CN 2154904Y
- Authority
- CN
- China
- Prior art keywords
- tube
- tieback
- tie
- central tube
- sleeves
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a sleeve tieback device used before and after the cementing work of various sleeves for high angle holes, horizontal wells and tail pipe hanging, which is composed of a tie-back tube joint (1), a tie-back tube (2), an insertion central tube (5), a back-off joint (6), a coupling (7), a lock ring (3) arranged on the internal wall of the tie-back tube (2), and a seal ring (4) arranged on the external wall of the insertion central tube (5). The sleeve connector of the structure can connect the upper and the lower stages of sleeves into a whole. When the sleeves are tied back, the sleeve post can be moved from top to bottom and the sealing function of the disposable cementing work can be achieved. The sleeve connector with simple structure and convenient operation is suitable for the tie-back of sleeves of various wells.
Description
The utility model relate to a kind of be used for before all kinds of casing cementing operations such as various high angle holes, horizontal well and tail tube hanging and well cementing operation after sleeve pipe tieback device.
On-the-spot employed sleeve pipe tieback device only is used for the post-job tieback of drilling liner cementing at present, this sleeve pipe tieback device is by tieback socket joint head, the tieback tube, insert central tube, the back-off joint, box cupling is formed, wherein central tube and tieback tube are that insert in the gap, return and this tieback device does not in use have sealing function, the two sections tubing string connects and is not integral, and needs the secondary well cementation, after being the drilling liner cementing operation, ability tieback upper sleeve post, thereby only be only applicable to traditional straight well tail pipe operation, can't satisfy the needs of cementing technologies such as high angle hole, horizontal well.
The purpose of this utility model provide a kind of can connect upper and lower two sections sleeve pipes as a whole, and can the reciprocate casing post behind the tieback, disposable well cementing operation can be played the sleeve pipe tieback device of sealing function behind the tieback.
For addressing the above problem, the solution that the utility model adopts is: be provided with retainer (3) and sealing ring (4) between the tieback tube (2) of traditional tieback device and insertion central tube (5), tieback tube (2) is connected on the top of lower casing string for the first time, instantly after parts casing pipe is sent into the shaft bottom, back-off proposes top weighting tube string, go into the casing post in the second time then and connect insertion central tube (5) bottom, move closer to tieback tube (2) when inserting central tube (5), set upright through centralizer, gently make insertion central tube (5) enter tieback tube (2), retainer this moment (3) shrinks, when retainer (3) enters tieback tube (2) gutter position, retainer (3) opens, if on carry sleeve pipe, then central tube and retainer move upward together, and retainer (3) to drive tieback tube (2) be that the lower tube string upwards moves together, so far sleeve pipe fuses up and down, and sealing ring (4) plays the high pressure sealing effect in disposable well cementing operation.
Advantage of the present utility model is: adopts retainer and hermetically-sealed construction, reduced the number of times of well cementing operation, can the reciprocate casing post behind the tieback and play the high pressure sealing effect, and this tieback device is simple in structure, easy to operate, is applicable to the sleeve pipe tieback of all kinds of wells.
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is the section of structure of a sleeve pipe tieback device.
Tieback socket joint head (1) connects with flat linking with tieback tube (2), tieback tube (2) and back-off joint (6) and insertion central tube (5) and box cupling (7) link with the API sleeve pipe and connect, play fixing and sealing function with retainer (3) and sealing ring (4) between tieback tube (2) and the insertion central tube (5), on the inwall of tieback tube (2), be provided with gutter, insert on the central tube (5) and also be provided with seal groove and gutter, its quantity, size is suffered anti-shearing according to retainer, anti-extrusion condition is calculated and is decided, in use, tieback socket joint head (1), tieback tube (2) and back-off joint (6) are linked to be one and are connected on cased top for the first time, instantly after parts casing pipe is sent into the shaft bottom, through back-off top weighting tube string is proposed, on ground retainer (3), sealing (4), insert central tube (5), box cupling (7) fuses, go into the casing post in the second time then and connect insertion central tube (5) bottom, when insertion central tube (5) moves closer to tieback tube (2), set upright through centralizer, gently make central tube (5) enter tieback tube (2), retainer this moment (3) shrinks, when retainer (3) enters tieback tube gutter position, retainer (3) opens, and sealing ring also seals simultaneously.
Claims (1)
- A kind of sleeve pipe tieback device, by tieback socket joint head (1), tieback tube (2), insert central tube (5), back-off joint (6), box cupling compositions such as (7) is characterized in that tieback tube (2) inwall and inserts central tube (5) outer wall having locked groove, retainer (3) is housed therebetween, and inserting on the central tube (5) has sealing ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211863 CN2154904Y (en) | 1993-04-24 | 1993-04-24 | Sleeve connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211863 CN2154904Y (en) | 1993-04-24 | 1993-04-24 | Sleeve connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2154904Y true CN2154904Y (en) | 1994-02-02 |
Family
ID=33793347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93211863 Expired - Fee Related CN2154904Y (en) | 1993-04-24 | 1993-04-24 | Sleeve connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2154904Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666215B (en) * | 2009-09-30 | 2012-01-11 | 安东石油技术（集团）有限公司 | Sleeve pipe tieback device |
| CN102418492A (en) * | 2011-11-02 | 2012-04-18 | 中国石油集团渤海钻探工程有限公司 | Tie-back plug-in sealing device for horizontal well fracturing |
| CN101449023B (en) * | 2006-10-11 | 2012-06-27 | 特姆卢克斯控股有限公司 | Threaded joint for an oil-well tubing |
| CN111520083A (en) * | 2020-04-30 | 2020-08-11 | 中国海洋石油集团有限公司 | Sealed tie-back device |
-
1993
- 1993-04-24 CN CN 93211863 patent/CN2154904Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101449023B (en) * | 2006-10-11 | 2012-06-27 | 特姆卢克斯控股有限公司 | Threaded joint for an oil-well tubing |
| CN101666215B (en) * | 2009-09-30 | 2012-01-11 | 安东石油技术（集团）有限公司 | Sleeve pipe tieback device |
| CN102418492A (en) * | 2011-11-02 | 2012-04-18 | 中国石油集团渤海钻探工程有限公司 | Tie-back plug-in sealing device for horizontal well fracturing |
| CN111520083A (en) * | 2020-04-30 | 2020-08-11 | 中国海洋石油集团有限公司 | Sealed tie-back device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |