CN2844407Y - Fluid pressure type down-hole deformed casing obturator - Google Patents
Fluid pressure type down-hole deformed casing obturator Download PDFInfo
- Publication number
- CN2844407Y CN2844407Y CN 200520084582 CN200520084582U CN2844407Y CN 2844407 Y CN2844407 Y CN 2844407Y CN 200520084582 CN200520084582 CN 200520084582 CN 200520084582 U CN200520084582 U CN 200520084582U CN 2844407 Y CN2844407 Y CN 2844407Y
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- casing
- deformed casing
- obturator
- deformed
- reshaper
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Abstract
The utility model provides a kind of fluid pressure type down-hole deformed casing obturator, and it is connected to form from top to bottom successively by swivel joint, seat sealing mechanism, hydraulic intensifier, tube expander, deformed casing reshaper and guide head; Swivel joint is one and not only can rotates in a circumferential direction but also can bear the joint of axial load that design has seat envelope slips on the seat sealing mechanism, and hydraulic intensifier is made up of area different plunger and hydraulic cylinder, and taper unit head and radial dilatation head are arranged on the deformed casing reshaper.Have three gathering sills on the guide head, wherein gathering sill a is out the straight trough on tapered plane, and two gathering sill b, c are out the opposite helicla flute of direction on the face of cylinder on tapered plane opposite in addition.This down-hole deformed casing obturator is installed in the tubing string hypomere, after arriving the casing deformation position, the deformed casing obturator is under the guiding of gathering sill, adjust to the casing deformation position voluntarily, seat is honored as a queen, and under hydraulic action, the taper unit head moves axially, the radial dilatation piece is made radial dilatation, reaches the purpose of repairing deformed casing.
Description
Technical field
The utility model relates to a kind of underground work instrument, is used to repair the sleeve pipe of distortion under the oil well.
Background technology
In oilfield process, owing to reasons such as stratum wrigglings, often make down-hole casing generation radial deformation, make caliber narrow down, influence the oil well ordinary production.At present, the underground work instrument that the down-hole deformed casing is repaired that uses on the oil field is when operation, can not effectively control the size of repairing casing power, sometimes downhole tool also can be stuck in the down-hole and can't pump out, and is very easy to cause the operation failure, produces down-hole accident, have a strong impact on production, the well that has is clear-cut just not to be repaiied, and has scrapped it, causes very big waste.
Summary of the invention
The purpose of this utility model is that a kind of fluid pressure type down-hole deformed casing obturator will be provided.
The purpose of this utility model is achieved in that it is connected to form successively by swivel joint, seat sealing mechanism, hydraulic intensifier, tube expander, deformed casing reshaper, six parts of guide head from top to bottom.Swivel joint is a kind of not only can rotating in a circumferential direction but also can bear the joint of axial load, its upper connecting tube post, the seat sealing mechanism of following related slips.Seat connects hydraulic intensifier below the sealing mechanism, and booster is made of different plunger and the hydraulic cylinders of area up and down.The radial dilatation piece that axially movable taper unit head is housed in the tubing string of deformed casing reshaper and can moves radially.The lower end of reshaper is a guide head, has three gathering sills on the guide head, and wherein one is out the straight trough on tapered plane, and two is the opposite helicla flute of opening on the face of cylinder on tapered plane opposite of direction in addition.
In the utility model, because the taper unit head can move axially, when after finishing deformed casing reparation task, needing to take out downhole tool, as long as reduce to go up the hydraulic pressure in the hydraulic cavities, the taper unit head moves on just can be axially, the expansion piece is also made radial contraction thereupon, therefore, carries a whole set of obturator on can be at an easy rate.As long as control ground hydraulic size, just can the interior hydraulic pressure of control well lower hydraulic pressure chamber, thereby can effectively control the size of repairing casing power.Three gathering sills that design on the guide head of deformed casing reshaper lower end can guide the deformed casing reshaper to do circumferentially to rotate, and adjust to the casing deformation position voluntarily.
Description of drawings
Fig. 1 is the structural representation of the fluid pressure type down-hole deformed casing obturator that proposes according to the utility model.
Fig. 2 is the structural representation of the described deformed casing reshaper of down-hole deformed casing obturator that proposes according to the utility model.
Fig. 3 is the structural representation of the described swivel joint of down-hole deformed casing obturator that proposes according to the utility model.
Fig. 4 is the structural representation of the described booster of down-hole deformed casing obturator that proposes according to the utility model.
The specific embodiment
Describe structure of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model is connected in sequence by swivel joint 1, seat sealing mechanism 2, hydraulic intensifier 3, tube expander 4, deformed casing reshaper 5 and 6 six parts of guide head from top to bottom.Swivel joint 1 is designed to can circumferentially rotate and can bear axial load, and as shown in Figure 3, it is made of top connection 9, lower contact 12, middle dress central tube 10 and thrust bearing 11.Seated sealing mechanism 2 under this joint upper connecting tube post.Seat sealing mechanism 2 is the seat envelope devices that have slips.Hydraulic intensifier 3 is installed between present sealing mechanism 2 and the tube expander 4, as shown in Figure 4, design has last hydraulic cavities 13 and lower hydraulic pressure chamber 16 in the hydraulic intensifier 3, the supercharging plunger is housed between the last lower hydraulic pressure chamber, the area of supercharging plunger upper part 14 is big, the area of bottom 15 is little, and the epimere of taper unit head 7 is adorned in lower hydraulic pressure chamber 16 belows, varies in size by last lower hydraulic pressure chamber area and realizes supercharging.Tube expander 4 is the big slightly rounding stage bodies in slightly little upper end, a lower end.Tube expander connects down deformed casing reshaper 5, as shown in Figure 2, the combined mechanism of the expansion piece of can axially movable taper unit head 7 and can move radially 8 is housed in the tubing string of casing mandrel.Be loaded on the guide head 6 of deformed casing reshaper 5 lower ends and have three gathering sill a, b, c, wherein groove a is out the straight trough on tapered plane, and two is the opposite helicla flute of opening on the face of cylinder, tapered plane opposite of direction in addition.
This down-hole deformed casing obturator is installed in the tubing string hypomere, under deliver to when reaching the casing deformation position, the direction of deformed casing reshaper is circumferentially rotated under the guiding of guide head gathering sill, adjust to the casing deformation position voluntarily, seat sealing mechanism seat is honored as a queen, under hydraulic action, after the hydraulic intensifier supercharging, highly pressurised liquid promotes the taper unit head and moves axially downwards, and the radial dilatation head is radially outward expanded, and makes the deformed casing plastic strain reach the purpose of repairing deformed casing by force.
Claims (1)
1, a kind of fluid pressure type down-hole deformed casing obturator is connected to form from top to bottom successively by swivel joint (1), seat sealing mechanism (2), hydraulic intensifier (3), tube expander (4), deformed casing reshaper (5) and (6) six parts of guide head, it is characterized in that:
1. said swivel joint (1) is circumferentially freely to rotate, and can bear the joint of axial load again;
The radial dilatation piece (8) that energy axially movable taper unit head (7) is housed in the tubing string of 2. said deformed casing reshaper (5) and can moves radially;
3. have three gathering sills on the said guide head (6), wherein gathering sill a is out the straight trough on tapered plane, and two gathering sill b, c are out the opposite helicla flute of direction on the face of cylinder on tapered plane opposite in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520084582 CN2844407Y (en) | 2005-06-24 | 2005-06-24 | Fluid pressure type down-hole deformed casing obturator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520084582 CN2844407Y (en) | 2005-06-24 | 2005-06-24 | Fluid pressure type down-hole deformed casing obturator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844407Y true CN2844407Y (en) | 2006-12-06 |
Family
ID=37486359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520084582 Expired - Fee Related CN2844407Y (en) | 2005-06-24 | 2005-06-24 | Fluid pressure type down-hole deformed casing obturator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844407Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988376A (en) * | 2010-10-25 | 2011-03-23 | 大庆油田有限责任公司 | Rotating nipple for hydraulic shaping |
| CN102646953A (en) * | 2012-04-30 | 2012-08-22 | 牛占龙 | Repairing device and method for deformed blocked plastic pipe |
| CN105569596A (en) * | 2015-12-14 | 2016-05-11 | 中国石油大学(华东) | Deformed casing repairing device |
-
2005
- 2005-06-24 CN CN 200520084582 patent/CN2844407Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988376A (en) * | 2010-10-25 | 2011-03-23 | 大庆油田有限责任公司 | Rotating nipple for hydraulic shaping |
| CN101988376B (en) * | 2010-10-25 | 2013-02-13 | 大庆油田有限责任公司 | Rotating nipple for hydraulic shaping |
| CN102646953A (en) * | 2012-04-30 | 2012-08-22 | 牛占龙 | Repairing device and method for deformed blocked plastic pipe |
| CN105569596A (en) * | 2015-12-14 | 2016-05-11 | 中国石油大学(华东) | Deformed casing repairing device |
| CN105569596B (en) * | 2015-12-14 | 2018-08-17 | 中国石油大学(华东) | A kind of deformed casing prosthetic 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 |