CN2837503Y - Hydraulic compression type packer - Google Patents
Hydraulic compression type packer Download PDFInfo
- Publication number
- CN2837503Y CN2837503Y CN 200520093692 CN200520093692U CN2837503Y CN 2837503 Y CN2837503 Y CN 2837503Y CN 200520093692 CN200520093692 CN 200520093692 CN 200520093692 U CN200520093692 U CN 200520093692U CN 2837503 Y CN2837503 Y CN 2837503Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- cylinder
- joint
- seat
- piston
- 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
The utility model relates to a hydraulic compression type packer which is composed of an upper joint 1, an O-shaped sealing ring 2, a central tube 3, a sealing assembly 4, a push ring 5, a cylinder 6, a piston 7, a cylinder joint 8, a nut 9, a lower joint 10 and a sealing plug 11. Because the utility model adopts a mode that the upper joint, the central tube, the lower joint and the sealing plug are orderly connected, the upper joint is sheathed with the sealing assembly, the push ring, the cylinder, the piston, the cylinder joint and the nut, the seat sealing of the utility model relies on hydraulic pressure provided by ground pump pressure, the seat sealing effect can not be influenced by the weight of drilling tools and the operation of pressure test can be totally carried out at any depth in a well cylinder. After the seat sealing, the piston props a dead center, a seat sealed rubber cylinder can not be unceasingly increased along with the increase of hydraulic pressure so as to avoid the danger of damaging the seat sealed rubber cylinder. The utility model has the advantages of accurate seat sealing position, easy fishing, reasonable design and simple structure, which is suitable for popularization and application on site.
Description
Technical field:
The utility model relates to the downhole tool that uses on a kind of oilfield, particularly a kind of hydraulic compression type packer.
Background technology:
In overhaul well construction process, it is important general again operation that casing pressure test is one, the general whole process of big well workover that will carry out the milling construction flatly or have casing deformation to repair needs pressure testing 3-4 time at least, and packer in the past commonly used has problems such as a seat envelope position inaccuracy, the pressure testing degree of depth be restricted, the situation of pressure testing failure often occurs, influence field produces.
Technical scheme:
The utility model purpose is to provide a kind of hydraulic compression type packer, and its seat envelope position is accurate, and the pressure testing degree of depth is unrestricted, pressure testing success rate height.
The utility model purpose is to realize like this, it is by top connection (1), O RunddichtringO (2), central tube (3), seal assembly (4), throw-out collar (5), cylinder barrel (6), piston (7), cylinder barrel joint (8), nut (9), lower contact (10) and sealing stifled (11) are formed, top connection (1) and central tube (3), lower contact (10) is connected successively with sealing stifled (11), in top connection (1), be with seal assembly (4), throw-out collar (5), cylinder barrel (6), piston (7), cylinder barrel joint (8), nut (9) is at top connection (1) and central tube (3), between cylinder barrel (6) and piston (7) O RunddichtringO (2) is arranged respectively.
Seat envelope: when packer behind predetermined well depth, in managing, suppress, under the effect of fluid pressure, promote piston and throw-out collar and make the seal assembly compression, seal the oil jacket space.Deblocking: termination of pumping after operation is finished, packing element promote ring and piston returns to previous status, the packer deblocking, but after drilling.
Top connection and central tube, lower contact and sealing are stifled to be connected the utility model successively owing to having adopted, in top connection, be with seal assembly, throw-out collar, cylinder barrel, piston, cylinder barrel joint, nut, the hydraulic pressure that its envelope relies on the ground pump pressure to provide, its seat envelope effect is not influenced by the weight of drilling tool, and any degree of depth can be carried out pressure testing in pit shaft.Seat is honored as a queen, and piston pushes up the dead point, and seat sealing tube will can not continue to increase the danger of producing the damage packing element along with the increase of hydraulic pressure.Seat envelope position is accurate, salvages easily.It is reasonable in design, and is simple in structure, is well suited for field popularization application.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment:
As shown in the figure, the utility model is made up of top connection 1, O RunddichtringO 2, central tube 3, seal assembly 4, throw-out collar 5, cylinder barrel 6, piston 7, cylinder barrel joint 8, nut 9, lower contact 10 and sealing stifled 11, top connection 1 is connected successively with central tube 3, lower contact 10 and sealing stifled 11, in top connection 1, be with seal assembly 4, throw-out collar 5, cylinder barrel 6, piston 7, cylinder barrel joint 8, nut 9, O RunddichtringO 2 arranged respectively in top connection 1 and central tube 3, cylinder barrel 6 and 7 in piston.
Claims (1)
1, a kind of hydraulic compression type packer, it is by top connection (1), O RunddichtringO (2), central tube (3), seal assembly (4), throw-out collar (5), cylinder barrel (6), piston (7), cylinder barrel joint (8), nut (9), lower contact (10) and sealing stifled (11) are formed, it is characterized in that: top connection (1) and central tube (3), lower contact (10) is connected successively with sealing stifled (11), in top connection (1), be with seal assembly (4), throw-out collar (5), cylinder barrel (6), piston (7), cylinder barrel joint (8), nut (9) is at top connection (1) and central tube (3), between cylinder barrel (6) and piston (7) O RunddichtringO (2) is arranged respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520093692 CN2837503Y (en) | 2005-11-16 | 2005-11-16 | Hydraulic compression type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520093692 CN2837503Y (en) | 2005-11-16 | 2005-11-16 | Hydraulic compression type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837503Y true CN2837503Y (en) | 2006-11-15 |
Family
ID=37391986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520093692 Expired - Fee Related CN2837503Y (en) | 2005-11-16 | 2005-11-16 | Hydraulic compression type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837503Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268973A (en) * | 2010-06-04 | 2011-12-07 | 淮南矿业(集团)有限责任公司 | Hole sealing device |
-
2005
- 2005-11-16 CN CN 200520093692 patent/CN2837503Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268973A (en) * | 2010-06-04 | 2011-12-07 | 淮南矿业(集团)有限责任公司 | Hole sealing 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 |