CN2851520Y - Hydraulic diameter-changeable type stabilizer - Google Patents
Hydraulic diameter-changeable type stabilizer Download PDFInfo
- Publication number
- CN2851520Y CN2851520Y CN 200520135951 CN200520135951U CN2851520Y CN 2851520 Y CN2851520 Y CN 2851520Y CN 200520135951 CN200520135951 CN 200520135951 CN 200520135951 U CN200520135951 U CN 200520135951U CN 2851520 Y CN2851520 Y CN 2851520Y
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- CN
- China
- Prior art keywords
- valve cores
- spool
- main body
- groove
- central pipe
- 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 - Lifetime
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Abstract
The utility model relates to a hydraulic diameter-changeable type stabilizer used for the well drilling work of a directional well, a horizontal well and a large displacement well during the well drilling work for petroleum, which is mainly composed of a main body, pistons, pins, valve cores, liquid flow pipelines, springs, telescopic plungers and a central pipe, wherein the central pipe, the valve cores and the pistons are from the top to the bottom parts and orderly arranged in an inner cavity of the main body; the space between the central pipe and the valve cores is provided with the springs; one circle of the outer surface of the pistons is provided with a groove; the lower parts of the pins are inserted into the groove; the valve cores are provided with a radial via hole; a hydraulic cavity which is formed by the telescopic plungers and the main body is communicated with the inner cavity of the valve cores through liquid flowing pipes on the main body and the radial via holes of the valve cores; the external surfaces of the middle parts of the valve cores are provided with a ring-shaped shallow groove; the upper part of the central pipe is provided with a plurality of via holes. The utility model has the advantages of convenient operation and reliable motion and can prevent a blocking accident from happening. Simultaneously, because of the simple structure, the manufacturing cost of the utility model is quite lower than that of an import tool.
Description
Technical field
The utility model is a kind of stabilizer that uses in directional well in the oil drilling, horizontal well and the extended reach well drillng operation that relates to, and belongs to the downhole tool class.
Background technology
At present, there is following problem in actual use in domestic extraordinary well drilling technology and the technology that vigorously promotes the use: in the drillng operation of directional well, horizontal well, often be subjected to the influence of factors such as formation condition, construction technology program with the drilling tool of routine, be difficult to control on ground and change its operating characteristic, can only adjust DHA by frequent making a trip, can finish complicated drillng operation.Simultaneously, make well track present " fluctuation " formula because of adjustment cycle is long, can produce additional moment of torsion and resistance, the conventional drilling instrument can't adapt to directional well, horizontal well drilling technique and the technical requirements of present complexity.
Finished the development and the exploitation of remote control drilling tool abroad the eighties, begun the nineties to apply.Particularly the remote control tapered stabilizer of U.S. Andergange company and Halliburton company development has been obtained good effect in the use in oil field, this instrument has effectively reduced the difficulty and the cost of extraordinary well drilling technology, make directional well, horizontal well drilling technique and technology jump onto a new step, but the import instrument exist complex structure, cost than problems such as height.
Domestic how tame research institution begins to research and develop the remote control tapered stabilizer in the early 1990s, with reference to foreign technology through for many years tackling key problem, obtained certain breakthrough technically, and finished the trial-production of model machine, but verify by field trial, there is the problem that instrument design is complicated, manufacture difficulty is higher, the downhole safety reliability is low more, thereby causes the failure applied.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, manufacturing cost is reasonable, functional reliability is high, simple to operate fluid pressure type variable gauge stabilizer.
The fluid pressure type variable gauge stabilizer that the utility model is related, mainly form by body 1, piston 2, pin 3, spool 4, fluid pipe 5, spring 6, scalable plunger 7 and central tube 8, central tube 8, spool 4, piston 2 are installed in the inner chamber of body 1 from bottom to top successively, between central tube 8 and the spool 4 spring 6 is housed, one week of external surface of piston 2 is processed with the groove that a shape has particular law, and pin 3 bottoms are inserted in the groove; One radial direction through hole is arranged on the spool 4, and the hydraulic cavities that scalable plunger 7 and body 1 forms communicates with valve core cavity by the radial direction through hole of fluid pipe on the body 15 and spool, and spool 4 middle part appearances have an annular shallow slot, and the top of central tube 8 has some through holes.
The utility model can change the working size of stabilizer by ground remote control by hydraulic way in good time, and is easy and simple to handle, reliable in action.And owing to reducing in a large number for adjusting the round trip that drilling assembly is carried out, use this instrument can improve drilling efficiency, reduce the generation of all kinds of accidents, and can guarantee in the process of making a trip, the control stabilizer is in the minor diameter state, can avoid the blocked portion accident to take place.Because the utility model is simple in structure, its manufacturing cost will be lower than the import instrument far away simultaneously.
Description of drawings
Fig. 1 the utility model structural representation
Fig. 2 piston 2 appearance groove shape expanded views
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description.
As shown in Figure 1: the utility model mainly is made up of body 1, piston 2, pin 3, spool 4, fluid pipe 5, spring 6, scalable plunger 7 and central tube 8, central tube 8, spool 4, piston 2 are installed in the inner chamber of body 1 from bottom to top successively, between central tube 8 and the spool 4 spring 6 is housed, one week of external surface of piston 2 is processed with the groove that a shape has particular law, and pin 3 bottoms are inserted in the groove; One radial direction through hole is arranged on the spool 4, and the hydraulic cavities that scalable plunger 7 and body 1 forms communicates with valve core cavity by the radial direction through hole of fluid pipe on the body 15 and spool, and spool 4 middle part appearances have an annular shallow slot, and the top of central tube 8 has some through holes.
The utility model operating principle: piston 2 external surfaces are processed with groove as shown in Figure 2, and pin 3 is installed in this groove, limited piston 2 move axially distance; On spool 4 tops one radial direction through hole is arranged.Under the hydraulic action, when piston 2 moves to deep-seated when putting, it is delivered to plunger 7 with the highly pressurised liquid in the drill string by conduit under fluid pressure 5, and plunger 7 is stretched out, in spool 4 middle part appearances one annular shallow slot is arranged, when piston 2 moves to the centre position, or put in the process of brill, be used in balance plunger 7 chambeies and the pressure between the well, thereby guarantee that plunger 7 is in contraction state; Have some through holes on the top of central tube 8, can be as slurry channel when plunger does not stretch out state, plunger is in when stretching out state, and it is closed by spool 4, thereby the drill string internal pressure is raise, make the terrestrial operation personnel can judge the fluid pressure type variable gauge stabilizer and be in the state of stretching out in the shaft bottom.
Claims (1)
1. fluid pressure type variable gauge stabilizer, mainly form by body (1), piston (2), pin (3), spool (4), fluid pipe (5), spring (6), scalable plunger (7) and central tube (8), it is characterized in that: central tube (8), spool (4), piston (2) are installed in the inner chamber of body (1) from bottom to top successively, between central tube (8) and the spool (4) spring (6) is housed, one week of external surface of piston (2) is processed with a groove, and pin (3) bottom is inserted in the groove; Spool has a radial direction through hole on (4), scalable plunger (7) communicates with valve core cavity by the fluid pipe (5) on the body (1) and the radial direction through hole of spool with the hydraulic cavities that body (1) forms, spool (4) middle part appearance has an annular shallow slot, and the top of central tube (8) has some through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520135951 CN2851520Y (en) | 2005-11-18 | 2005-11-18 | Hydraulic diameter-changeable type stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520135951 CN2851520Y (en) | 2005-11-18 | 2005-11-18 | Hydraulic diameter-changeable type stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851520Y true CN2851520Y (en) | 2006-12-27 |
Family
ID=37585476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520135951 Expired - Lifetime CN2851520Y (en) | 2005-11-18 | 2005-11-18 | Hydraulic diameter-changeable type stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851520Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463712B (en) * | 2009-01-08 | 2011-05-25 | 西南石油大学 | Eccentric center-adjustable reducing stabilizer |
| CN106368621A (en) * | 2016-11-28 | 2017-02-01 | 长江大学 | Multi-stage diameter variable stabilizer |
| CN108915613A (en) * | 2018-07-19 | 2018-11-30 | 江小三 | A kind of hydraulic variable diameter stabilizer |
-
2005
- 2005-11-18 CN CN 200520135951 patent/CN2851520Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463712B (en) * | 2009-01-08 | 2011-05-25 | 西南石油大学 | Eccentric center-adjustable reducing stabilizer |
| CN106368621A (en) * | 2016-11-28 | 2017-02-01 | 长江大学 | Multi-stage diameter variable stabilizer |
| CN106368621B (en) * | 2016-11-28 | 2019-02-12 | 长江大学 | A kind of multistage variable diameter stabilizer |
| CN108915613A (en) * | 2018-07-19 | 2018-11-30 | 江小三 | A kind of hydraulic variable diameter stabilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081212 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061227 |
|
| EXPY | Termination of patent right or utility model |