CN201045281Y - Well bore guiders - Google Patents
Well bore guiders Download PDFInfo
- Publication number
- CN201045281Y CN201045281Y CNU2006201688749U CN200620168874U CN201045281Y CN 201045281 Y CN201045281 Y CN 201045281Y CN U2006201688749 U CNU2006201688749 U CN U2006201688749U CN 200620168874 U CN200620168874 U CN 200620168874U CN 201045281 Y CN201045281 Y CN 201045281Y
- Authority
- CN
- China
- Prior art keywords
- cone
- guide way
- guiding body
- central tube
- shear pin
- 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
A borehole guider is a downhole tool used for guidance in oil or water wells and to hang liner well completion. A piston cone is arranged inside the connector of an upper hydraulic cylinder and jacketed outside a central pipe which is connected with the hydraulic cylinder by thread, an upper guiding body is jacketed on the central pipe, the bevel of the upper guiding body contacts the bevel of the piston cone, the upper guiding body is fixed to the central pipe by an upper guiding body shear pin, a compression spring is jacketed outside the upper guiding body, a support is jacketed on the upper guiding body and fixed on the upper guiding body by a support shear pin, the T-shaped portions on the two ends of a slip are respectively arranged inside the T-shaped grooves of the support and a cone which is jacketed on the upper guiding body, a lock ring is arranged inside the cone and connected with the serrated teeth of the cone by thread, a lower guiding body is jacketed on the central pipe and connected with the cone by thread, and a release shear pin fixes the lower guiding body to the central pipe. The borehole guider is mainly anchored on the upper portion of a hanger to realize the guiding effect in the process of detaching a pipe column to prevent tools from being blocked at the position of the hanger.
Description
Affiliated technical field
The utility model relates to a kind of pit shaft guider that a kind of oil, well that is used for hanging liner completion leads.
Background technology
At present, in the oil that hangs liner completion, well, always form the step of a big sleeve pipe and small casing transition in the hanger position.Oil, well safeguard and workover treatment in, instrument trip out in the hanger position with down fashionable frequent can jam, tubing string can not be removed, cause the overhaul of oil, well, overhaul cost is big, and has also missed the ordinary production of oil, well.
Summary of the invention
For the hanger position that overcomes existing suspension liner completion does not have guiding device, the deficiency of easy jam when playing lower tubular column, the purpose of this utility model just is to provide a kind of pit shaft guider, this pit shaft guider can be anchored on hanger top, the pit shaft guider plays guide effect when playing lower tubular column, instrument trip out with fashionable down just can not be at hanger position jam.
The technical scheme that its technical problem that solves the utility model adopts is: the piston cone places fluid cylinder joint inside, be enclosed within the central tube outside, O shape circle is positioned at the seal groove of piston cone, last fluid cylinder joint is threaded with central tube, steel ball is positioned on the sealing inclined-plane of central tube, last guide way is enclosed within on the central tube, the inclined-plane of last guide way contacts with the inclined-plane of piston cone, last guide way is used the guide way shear pin and is fixed on the central tube, last guide way outside is provided with saw-tooth thread, compression spring sleeve contacts with the step of last guide way in the outside of last guide way, bearing is enclosed within on the guide way, end face contacts with stage clip, and be fixed on the guide way with the bearing shear pin, the T shape part at slips two ends places respectively in the T-slot of bearing and cone, cone is enclosed within on the guide way, cone inside is provided with saw-tooth thread, lock ring is positioned at cone inside and is connected with the cone saw-tooth thread, the lock ring inside and outside is provided with saw-tooth thread, following guide way is enclosed within on the central tube and is threaded with cone, and the shear pin of giving up will descend guide way to be fixed on the central tube.Last fluid cylinder joint outside is provided with righting strip, and central tube top is provided with the eyelet that liquid passes through.
The beneficial effects of the utility model are, the pit shaft guider can be anchored on hanger top, and the pit shaft guider plays guide effect when playing lower tubular column, and the instrument that prevents is at hanger position jam.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is a structural representation of the present utility model.
In the accompanying drawing 1, go up the fluid cylinder joint; 2, O shape circle; 3, piston cone; 4, steel ball; 5, central tube; 6, go up guide way; 7, go up the guide way shear pin; 8 stage clips; 9, bearing; 10, bearing shear pin; 11, slips; 12, cone; 13, lock ring; 14, the shear pin of giving up; 15, following guide way.
The specific embodiment
As shown in drawings, piston cone 3 places fluid cylinder joint 1 inside, be enclosed within central tube 5 outsides, O shape circle 2 is positioned at the seal groove of piston cone 3, last fluid cylinder joint 1 is threaded with central tube 5, steel ball 4 is positioned on the sealing inclined-plane of central tube 5, last guide way 6 is enclosed within on the central tube 5, the inclined-plane of last guide way 6 contacts with the inclined-plane of piston cone 3, last guide way 6 is used guide way shear pin 7 and is fixed on the central tube 5, last guide way 6 outsides are provided with saw-tooth thread, the outside that stage clip 8 is enclosed within guide way 6 contacts with the step of last guide way 6, bearing 9 is enclosed within on the guide way 6, end face contacts with stage clip 8, and be fixed on the guide way 6 with bearing shear pin 10, the T shape part at slips 11 two ends places respectively in the T-slot of bearing 9 and cone 12, cone 12 is enclosed within on the guide way 6, cone 12 inside are provided with saw-tooth thread, lock ring 13 is positioned at cone 12 inside and is connected with cone 12 saw-tooth threads, lock ring 13 inside and outsides are provided with saw-tooth thread, following guide way 15 is enclosed within on the central tube 5 and is threaded with cone 12, and the shear pin 14 of giving up will descend guide way 15 to be fixed on the central tube 5.
During use, the pit shaft guider is delivered to hanger top in the well with oil pipe, suppress in oil pipe with pump truck, hydraulic pressure acts on the piston cone 3 by the eyelet on the central tube 5, when pressure reaches certain value, the last guide way 6 of piston cone 3 promotions will be gone up guide way shear pin 7 and cut off, last guide way 6 drives bearing 9 by bearing shear pin 10 and promotes slips 11, slips 11 is anchored on the sleeve pipe along descending the strutting in cone 12 inclined-planes, pump truck continues to suppress, bearing shear pin 10 is cut off, and stage clip 8 is compressed, when pressure reaches when giving up pressure, the shear pin 14 of giving up is cut off, oil pipe can will be gone up fluid cylinder joint 1, central tube 5, piston cone 3 trips out pit shaft, loses guide way 6 on the down-hole, following guide way 15 grades are stung on casing wall tightly by slips 11, and following guide way 15 just plays guide effect with last guide way 6 when tubing string removes.
Claims (2)
1. pit shaft guider, the piston cone places fluid cylinder joint inside, be enclosed within the central tube outside, last fluid cylinder joint is threaded with central tube, last guide way is enclosed within on the central tube, it is characterized in that: the inclined-plane of going up guide way contacts with the inclined-plane of piston cone, last guide way is used the guide way shear pin and is fixed on the central tube, compression spring sleeve is in the outside of last guide way, bearing is enclosed within on the guide way, and be fixed on the guide way with the bearing shear pin, the T shape part at slips two ends places respectively in the T-slot of bearing and cone, and cone is enclosed within on the guide way, and lock ring is positioned at cone inside and is connected with the cone saw-tooth thread, following guide way is enclosed within on the central tube and is threaded with cone, and the shear pin of giving up will descend guide way to be fixed on the central tube.
2. pit shaft guider according to claim 1 is characterized in that: go up fluid cylinder joint outside and be provided with righting strip, central tube top is provided with the eyelet that liquid passes through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201688749U CN201045281Y (en) | 2006-12-30 | 2006-12-30 | Well bore guiders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201688749U CN201045281Y (en) | 2006-12-30 | 2006-12-30 | Well bore guiders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201045281Y true CN201045281Y (en) | 2008-04-09 |
Family
ID=39308754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201688749U Expired - Fee Related CN201045281Y (en) | 2006-12-30 | 2006-12-30 | Well bore guiders |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201045281Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704878A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Recovery deflecting device |
-
2006
- 2006-12-30 CN CNU2006201688749U patent/CN201045281Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704878A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Recovery deflecting 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 |