CN201024940Y - Built-in rotary end tube suspender - Google Patents
Built-in rotary end tube suspender Download PDFInfo
- Publication number
- CN201024940Y CN201024940Y CNU2007201437266U CN200720143726U CN201024940Y CN 201024940 Y CN201024940 Y CN 201024940Y CN U2007201437266 U CNU2007201437266 U CN U2007201437266U CN 200720143726 U CN200720143726 U CN 200720143726U CN 201024940 Y CN201024940 Y CN 201024940Y
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- tube
- utility
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- built
- inner teeth
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Abstract
The utility model relates to an internal rotating tail tube hanger, belonging to the field of pitshaft tool of well drill construction. The internal rotating tail tube hanger is formed by connecting a liner revolving gear, an inner tube, a lower draft tube. The utility model is characterized in that: the tail tube revolving gear adopts a mesh jack design, through the jack of the tail tube revolving gear, the hanging component is wholly driven and the hanger is ensured to wholly rotate; in addition, a hanging slip is positioned in the upright block of an upright prick. The lower tail tube of the utility model can rotate to operate at any time and can rotate a tube cylinder tube to clean a sand bed if come across blocks; moreover, the utility model with large flowing area can reduce the pressure differential of a fixed well, the clamp is built in and does not be exposed so as to reduce the possibility of seat hanging in advance.
Description
Technical field
The utility model relates to a kind of built-in rotary liner hanger, is the tail tube hanging device in the Process of Oil Well Drilling, is used for the seat extension of straight well, directional well and extended reach well and guarantees being lowered to smoothly of tail pipe, belongs to the wellbore tool that wellbore construction is used.
Technical background
At present, in the tail pipe operation of straight well, directional well and extended reach well, the on-the-spot extension hanger that is suitable for mainly contains two kinds of fluid pressure type and mechanical types, it exists slips to cooperate with cone in the completion process to cause that area of passage is little, the setting of casing process is hampered and can not rotates, and slip insert is exposed to the outside and shifts to an earlier date problems such as seat extension easily.These situations can only propose sleeve pipe or sit the extension completion in case generation usually can't be remedied.
Summary of the invention
The purpose of this utility model is to provide a kind of built-in rotary liner hanger, overcomes the problems referred to above.This device can be realized big runner, the built-in protection of slips, the rotary operation that can midway be hampered, and improves seat and hangs success rate, can reduce the load of rig and drilling tool simultaneously, saves expensive sleeve pipe and a large amount of oil well cements.
The technical solution adopted in the utility model, it is a kind of built-in rotary liner hanger, from top to bottom be formed by connecting by tail pipe rotating mechanism, interior pipe 7, bottom skirt 8, it is characterized in that the tail pipe rotating mechanism is by inner teeth pipe nipple 1, inside and outside tooth embedding piston/cylinder 2, claw collar 3, swivel nut 4 and set upright cone 5 and constitute down, the inner teeth engagement that inner teeth that the inner teeth pipe nipple is 1 li and inside and outside tooth embedding piston/cylinder are 2 li, the outer tooth embedding of inside and outside tooth embedding piston/cylinder 2 and following claw collar 3 engagements, inner teeth pipe nipple 1, swivel nut 4 and set upright cone 5 employings and be threaded.
Built-in rotary liner hanger of the present utility model is characterized in that hanging slips 6 and is placed in the wiper block of setting upright cone 5.
Because above-mentioned employing structure, a possibility of hanging is in advance reduced, because slips is hidden in and has also increased area of passage in the wiper block in the built-in outside that is not exposed to of slip insert of the present utility model; The tail pipe rotating mechanism adopts the engagement tooth to be embedded meter, with the whole drive of suspended portion, guarantees the whole rotation of hanger by the tooth embedding.
The beneficial effects of the utility model comprise down in the tail pipe process rotary operation at any time, are hampered can rotate tubing string and remove casting bed, and area of passage is big, reduces well cementation pressure reduction, and slips is built-in not to be exposed, and reduce in advance seat and hang.
Description of drawings
Fig. 1, built-in rotary liner hanger structural representation.
Fig. 2, built-in rotary liner hanger A-A sectional drawing
Among the figure, inner teeth pipe nipple 1, inside and outside tooth embedding piston/cylinder 2, down claw collar 3, swivel nut 4, set upright cone 5, slips 6, interior pipe 7, bottom skirt 8.
The specific embodiment
Below in conjunction with drawings and Examples structure of the present utility model is further specified, in Fig. 1, the inner teeth engagement that inner teeth that the inner teeth pipe nipple is 1 li and inside and outside tooth embedding piston/cylinder are 2 li, outer tooth embedding and following claw collar 3 engagements.Inner teeth pipe nipple 1, swivel nut 4 and set upright cone 5 and be threaded, slips 6 is hidden in the wiper block of setting upright cone 5 by slideway.When needing rotation, the inner teeth engagement that inner teeth that the inner teeth pipe nipple is 1 li and inside and outside tooth embedding piston rod are 2 li, outer tooth embedding meshes integral body with following claw collar 3, drives slips 6 and sets upright cone 5 unitary rotation.When needing back-off operation, inside and outside tooth embedding piston/cylinder 2 and inner teeth pipe nipple 1, claw collar 3 separates by pressure down.
Claims (2)
1. built-in rotary liner hanger, from top to bottom be formed by connecting by tail pipe rotating mechanism, interior pipe (7), bottom skirt (8), it is characterized in that the tail pipe rotating mechanism is by inner teeth pipe nipple, inside and outside tooth embedding piston/cylinder, claw collar, swivel nut and set upright cone and constitute down, the inner teeth engagement of the inner teeth of inner teeth pipe nipple (1) lining and inside and outside tooth embedding piston/cylinder (2) lining, the outer tooth embedding of inside and outside tooth embedding piston/cylinder (2) and following claw collar (3) engagement, inner teeth pipe nipple (1), swivel nut (4) and set upright cone (5) employing and be threaded.
2. built-in rotary liner hanger as claimed in claim 1 is characterized in that hanging slips (6) and is placed in the wiper block of setting upright cone (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201437266U CN201024940Y (en) | 2007-04-04 | 2007-04-04 | Built-in rotary end tube suspender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201437266U CN201024940Y (en) | 2007-04-04 | 2007-04-04 | Built-in rotary end tube suspender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024940Y true CN201024940Y (en) | 2008-02-20 |
Family
ID=39098797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201437266U Expired - Fee Related CN201024940Y (en) | 2007-04-04 | 2007-04-04 | Built-in rotary end tube suspender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024940Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705800B (en) * | 2009-11-18 | 2012-07-04 | 东营百华石油技术开发有限公司 | Anti-falling hanging device |
| CN104295264A (en) * | 2014-09-29 | 2015-01-21 | 中国石油天然气集团公司 | Attachment-to-wall concealed drilling-free blind flange well cementation device |
-
2007
- 2007-04-04 CN CNU2007201437266U patent/CN201024940Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705800B (en) * | 2009-11-18 | 2012-07-04 | 东营百华石油技术开发有限公司 | Anti-falling hanging device |
| CN104295264A (en) * | 2014-09-29 | 2015-01-21 | 中国石油天然气集团公司 | Attachment-to-wall concealed drilling-free blind flange well cementation device |
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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: 20080220 Termination date: 20160404 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |