CN201802368U - Underground hydraulic expansion cone - Google Patents
Underground hydraulic expansion cone Download PDFInfo
- Publication number
- CN201802368U CN201802368U CN2010205437106U CN201020543710U CN201802368U CN 201802368 U CN201802368 U CN 201802368U CN 2010205437106 U CN2010205437106 U CN 2010205437106U CN 201020543710 U CN201020543710 U CN 201020543710U CN 201802368 U CN201802368 U CN 201802368U
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- China
- Prior art keywords
- hole
- rises
- awl
- piston
- cylindrical piston
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- 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 - Lifetime
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to an underground hydraulic expansion cone which is applied in expanding and enlarging inner holes of underground sand-prevention sieve pipes in an oil field. A central hole of an expansion cone body is fixedly provided with a central pipe, and the pipe wall of the central pipe is distributed with radial liquid guiding holes. The outer wall of the expansion cone body is provided with three rows of piston holes which are distributed spirally; each piston hole is provided with two symmetrically-distributed fixed grooves along the axial direction; each fixed groove is internally provided with a guide pressing plate; and screws are used for fixing the guide pressing plates in the fixed grooves. Each piston hole is internally provided with a cylindrical piston, the side wall of the cylindrical piston is symmetrically provided with two guide grooves, and one ends of the guide pressing plates are arranged in the guide grooves. The outer side of each cylindrical piston is fixedly provided with a roller by a pin shaft. The underground hydraulic expansion cone has the effect of being capable of carrying out hole expansion operation to sand-prevention sieve pipes of a cased well and a barefoot well.
Description
Technical field
The utility model relates to well workover technology field, down-hole, oil field, and particularly a kind of oil well well sandscreen expands and enlarges the down-hole special tool of endoporus.
Background technology
Oil well is just having in the process, the underproduction, the stopping production of shaking out and easily causing oil well, and the wearing and tearing of aggravation ground and underground equipment also can sand plug occur, sand buries phenomenon.The whole world has 80% the oil gas well employing mechanical means sand control that shakes out approximately.Mechanical means mainly contains the sand control pipe sand control, gravel is filled sand control etc.Expansion sand control screen is a new sand control technique, and screen expansion to the borehole wall, can be increased substantially area of passage, simultaneously can be with the sand production retaining in the oil pipe outside.
In expansion sand control screen when construction, need a kind of swell diameter variable and the instrument of enough expansion forces is arranged, and implements the internal diameter expansion to sand control screen.
The utility model content
The purpose of this utility model is: fluid power awl that rises in a kind of down-hole is provided, provides a kind of and enlarge the bloat tool of sand control screen internal diameter by fluid power, can be used for cased well and open hole well sand control screen ream operation.
The technical solution adopted in the utility model is: the down-hole fluid power awl that rises, mainly form by rise awl body, central tube, guiding pressing plate, cylindrical piston, screw, bearing pin and roller, the cylinder bodily form rise the awl body centre bore is arranged, there is the drilling rod internal thread awl body upper end of rising, there is the drilling rod external screw thread awl body lower end of rising, it is characterized in that: in the awl body centre bore that rises, be fixed with central tube, be distributed with radially delivery hole on the tube wall of central tube.The effect of central tube is that the restriction cylindrical piston inwardly shrinks also and can provide hydraulic thrust for cylindrical piston.The piston hole that has three row's spirals to distribute on the awl body outer wall that rises, each piston hole has the holddown groove of two symmetrical distributions vertically, has guiding pressing plate, the screw pressing plate that will lead to be fixed in the holddown groove in holddown groove respectively.In each piston hole cylindrical piston is arranged, cylindrical piston sidewall symmetry has two gathering sills, and an end of guiding pressing plate is in gathering sill.Cylindrical piston can slide in piston hole, and the guiding pressing plate plays the effect that prevents that cylindrical piston from rotating.The outside at each cylindrical piston is fixed with a roller by bearing pin.
Radially delivery hole on the described central tube tube wall is relative with cylindrical piston.
The face of cylinder of described roller is an arc.
In order to make in the fixation of guiding pressing plate, in the end of holddown groove inside groove is arranged respectively, the other end of guiding pressing plate inserts in the inside groove.
Between bearing pin and roller, needle bearing is arranged.
The beneficial effects of the utility model: the utility model down-hole fluid power awl that rises, can carry out reaming to cased well and open hole well sand control screen, and simple and reliable for structure, automatic spacing leaks few.
Description of drawings
Fig. 1 is the utility model down-hole fluid power awl contour structures schematic diagram that rises.
Fig. 2 is the down-hole fluid power wimble structure generalized section that rises.
Fig. 3 is the A-A generalized section of Fig. 2.
Among the figure, the awl body that 1. rises, 2. central tube, 3. guiding pressing plate, 4. cylindrical piston, 5. screw, 6. bearing pin, 7. bearing, 8. roller, 9. delivery hole, 10. gathering sill, 11. inside grooves, 12. piston holes, 13. holddown grooves, 14. drilling rod internal threads, 15. drilling rod external screw threads.
The specific embodiment
Embodiment 1: with a down-hole fluid power rise the awl be example, the utility model is described in further detail.
Consult Fig. 2.Fluid power awl that rises in the utility model down-hole mainly is made up of the awl body 1 that rises, central tube 2, guiding pressing plate 3, cylindrical piston 4, screw 5, bearing pin 6 and roller 8.At the cylinder bodily form awl body 1 that rises centre bore is arranged, there is drilling rod internal thread 14 awl body 1 upper end of rising, and there is drilling rod external screw thread 15 awl body 1 lower end of rising, and the fluid power awl that rises in down-hole can be connected on the tubing string.
In awl body 1 centre bore that rises, be fixed with central tube 2, be distributed with radially delivery hole 9 on the tube wall of central tube 2.Radially delivery hole 9 on central tube 2 tube walls is relative with cylindrical piston 4.The piston hole 12 that on awl body 1 outer wall that rises, has 12 spirals of three rows to distribute, each piston hole 12 has the holddown groove 13 of two symmetrical distributions vertically, and a guiding pressing plate 3 is arranged respectively in holddown groove 13, and screw 5 pressing plate 3 that will lead is fixed in the holddown groove 13.End at holddown groove 13 has inside groove 11 respectively, and the other end of guiding pressing plate 3 inserts in the inside groove 11.In each piston hole 12 cylindrical piston 4 is arranged, cylindrical piston 4 sidewall symmetries have two gathering sills 10, and an end of guiding pressing plate 3 is in gathering sill 10.The outside at each cylindrical piston 4 is fixed with a roller 8 by bearing pin 6.The face of cylinder of roller 8 is a circular arc.Between bearing pin 6 and roller 8, needle bearing 7 is arranged.
Claims (5)
1. down-hole fluid power awl that rises, mainly form by the awl body (1) that rises, central tube (2), guiding pressing plate (3), cylindrical piston (4), screw (5), bearing pin (6) and roller (8), the cylinder bodily form rise the awl body (1) centre bore is arranged, there is a drilling rod internal thread (14) awl body (1) upper end of rising, there is drilling rod external screw thread (15) awl body (1) lower end of rising, it is characterized in that: in awl body (1) centre bore that rises, be fixed with central tube (2), be distributed with radially delivery hole (9) on the tube wall of central tube (2); The piston hole (12) that on awl body (1) outer wall that rises, has three row's spirals to distribute, each piston hole (12) has the holddown groove (13) of two symmetrical distributions vertically, guiding pressing plate (3) is arranged respectively in holddown groove (13), and screw (5) pressing plate (3) that will lead is fixed in the holddown groove (13); Cylindrical piston (4) is arranged in each piston hole (12), and cylindrical piston (4) sidewall symmetry has two gathering sills (10), and an end of guiding pressing plate (3) is in gathering sill (10); The outside at each cylindrical piston (4) is fixed with a roller (8) by bearing pin (6).
2. the down-hole according to claim 1 fluid power awl that rises, it is characterized in that: the radially delivery hole (9) on described central tube (2) tube wall is relative with cylindrical piston (4).
3. the down-hole according to claim 1 fluid power awl that rises, it is characterized in that: the face of cylinder of described roller (8) is an arc.
4. the fluid power awl that rises in down-hole according to claim 1 is characterized in that: in the end of holddown groove (13) inside groove (11) is arranged respectively, the other end of guiding pressing plate (3) inserts in the inside groove (11).
5. according to claim 1,2, the 3 or 4 described down-hole fluid power awl that rises, it is characterized in that: between bearing pin (6) and roller (8), needle bearing (7) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205437106U CN201802368U (en) | 2010-09-27 | 2010-09-27 | Underground hydraulic expansion cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205437106U CN201802368U (en) | 2010-09-27 | 2010-09-27 | Underground hydraulic expansion cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802368U true CN201802368U (en) | 2011-04-20 |
Family
ID=43871873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205437106U Expired - Lifetime CN201802368U (en) | 2010-09-27 | 2010-09-27 | Underground hydraulic expansion cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221119A (en) * | 2015-10-29 | 2016-01-06 | 安东柏林石油科技（北京）有限公司 | A kind of instrument and method setting up Oil/gas Well underground sand-prevention tube particle flow channel |
-
2010
- 2010-09-27 CN CN2010205437106U patent/CN201802368U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221119A (en) * | 2015-10-29 | 2016-01-06 | 安东柏林石油科技（北京）有限公司 | A kind of instrument and method setting up Oil/gas Well underground sand-prevention tube particle flow channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term |