CN2490312Y - Hydraulic compression underground repeated setting packer for washability well - Google Patents
Hydraulic compression underground repeated setting packer for washability well Download PDFInfo
- Publication number
- CN2490312Y CN2490312Y CN 01219654 CN01219654U CN2490312Y CN 2490312 Y CN2490312 Y CN 2490312Y CN 01219654 CN01219654 CN 01219654 CN 01219654 U CN01219654 U CN 01219654U CN 2490312 Y CN2490312 Y CN 2490312Y
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- CN
- China
- Prior art keywords
- seat
- seal ring
- central tube
- setting
- 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 discloses a hydraulic compression downhole repeated setting packer for washable well, which consists of an upper joint, a lower joint, an unsetting piston, a setting piston and a rubber cylinder. An elastic ferrule is arranged between a protective pipe and a central pipe, and a setting ring is fixed on the external wall of the central pipe. The elastic ferrule is driven by the setting piston to engage with the setting ring, and the design solves untight setting of the prior rubber cylinder and the sleeve wall. Compared with the prior art, the utility model has high setting rate, and the repeated setting and unsetting operation of downhole packer can be realized just by changing the water injecting direction at the well mouth, thus lightening operation intensity and enhancing working efficiency.
Description
Technical field:
The utility model relates to oil-field flooding washing well hydraulic compression type packer, belongs to the following operation washing well packer repeatedly of mechanical block shut-in well.Background technology:
At present, the widely used washing well hydraulic compression type packer in each oil field, because the well-flushing switch is not closed completely and causes an envelope rate low, the well-flushing passage that is between the inside and outside central tube is narrow and small, and fluid resistance is big when causing well-flushing, and flow velocity is low, shortcomings such as well washing effect difference.Be only limited to disposable operation, can not be in the down-hole deblocking, seat envelope repeatedly.When carrying out second time operation, whole oil pipes all need be mentioned more than the ground, change the deblocking pin after, transfer whole oil pipes once more, have shortcomings such as operation intensity is big.Technology contents:
It is reliable that the purpose of this utility model provides a kind of sealing, and can be in the down-hole washing well waterpower compression down-hole of seat envelope and deblocking base sealed packer repeatedly repeatedly.
The utility model is achieved in that a kind of washing well waterpower compression down-hole base sealed packer repeatedly, form by upper and lower joint, deblocking piston, seat envelope piston, seat big envelope, pillar, cylinder sleeve, jackscrew, cover, adjustable ring, packing element, spacer ring, central tube, shop bolt and O RunddichtringO, between pillar and central tube, be provided with elastic ferrule, central tube outer wall holder seal ring is by the elastic ferrule and the clamping of seat seal ring of seat envelope piston drive.
Can be provided with outside pillar and help seal ring, helping seal ring is convex, helps seal ring and sleeve wall to form wedge shape space.
Described central tube lower end can fixedly connected lower center tube, lower center tube and second oil sealing cylinder of seat big envelope formation.
Described elastic ferrule can be provided with jump ring.
Described central tube can be threaded with lower center tube.
Described seat seal ring can be threaded with central tube.
The utility model is owing to adopted said structure, elastic ferrule and the clamping of seat seal ring constitute mechanical interlocking mechanism, on packer, increase mechanical interlocking mechanism, it is close that seat is obturaged, as not oppositely water filling, packer annular space with permanent packing, the good sealing effect of packer, when reverse well-flushing, when annular pressure and tubing string pressure differential reached certain value, elastic ferrule disconnected with the seat seal ring, finishes and separates the clean-out service of being honored as a queen, compared with prior art, the utility model seat envelope rate height, and, just can finish downhole packer seat envelope and deblocking operation repeatedly as long as change the direction of well head water filling, thereby alleviated operation intensity, improved working efficiency.Description of drawings:
The utility model washing well waterpower compression shown in Figure 1 down-hole is the structural representation of base sealed packer repeatedly.The specific embodiment:
The utility model is described in further detail below in conjunction with drawings and Examples.
With reference to figure 1, the utility model is by top connection 1, lower contact 22, deblocking piston 3, seat envelope piston 21, seat big envelope 17, seat seal ring 6, elastic ferrule 10, jump ring 8, pillar 11, cylinder sleeve 4, jackscrew 2, cover 5, packing element 14,16, help seal ring 13, upper center tube 7, adjustable ring 9, spacer ring 12,15, shop bolt 19 and O RunddichtringO 20 are formed, between pillar 11 and central tube 7, be provided with elastic ferrule 10, central tube 7 outer wall thread Connection Block seal rings 6, elastic ferrule 10 is provided with jump ring 8, an elastic ferrule 10 and 6 clampings of seat seal ring by 21 drives of seat envelope piston, ground is the water filling pressurization in central tube 7, the central tube column pressure is greater than oil, the pressure of annular space between the sleeve, it is up together with the seat big envelope 17 of cutting off shop bolt 19 that seat envelope piston 21 drives elastic ferrule 10, and then compression packing element 14, after being expanded, it is adjacent to sleeve lining, when the stroke end, an elastic ferrule 10 and a seat seal ring 6 are blocked locked, finish the operation of seat envelope, reach mechanical packing sleeve, the purpose of oil pipe annular space.When reverse well-flushing, by well head to the annular space water filling, when annular pressure reaches rated value greater than the tubing string pressure of central tube, deblocking piston 3 moves downward, after the conical horn mouth of deblocking piston 3 annular end faces and elastic ferrule upper end contacts, deblocking piston 3 is subjected to the annular pressure effect will overcome the clamping force of elastic ferrule 10 and the radial load of jump ring 8, claw is risen greatly, elastic ferrule 10 disconnects with seat seal ring 6, because fluid pressure makes a big envelope 17 pulling pillars 11 and elastic ferrule 10 force packing element 14 to restore downwards on the elasticity of packing element 14 and the seat big envelope 17, deblocking finishes, this moment, current passed through sleeve pipe, annular space between the packing element flings the shaft bottom, return ground by carrying foreign material in the central tube 7 again, reached the well-flushing purpose.Seat envelope piston 21 and seat big envelope 17 are equivalent to double-piston, the lower center tube 18 that is threaded in central tube 7 lower ends, and lower center tube 18 forms another oil sealing cylinder with seat big envelope 17.When guaranteeing seat envelope power, reduce the well head water injection pressure.Expand in order to quicken packing element 14, improve seat envelope rate, on pillar 11, be provided with and help seal ring 13, help seal ring 13 to be convex, help seal ring 13 and sleeve wall to form wedge shape space.
Claims (6)
1, a kind of washing well waterpower compression down-hole is base sealed packer repeatedly, by last, lower contact (1) (22), deblocking piston (3), seat envelope piston (21), seat big envelope (17), pillar (11), central tube (7), cylinder sleeve (4), jackscrew (2), cover (5), adjustable ring (9), packing element (14,16), spacer ring (12,15), shop bolt (19) and O RunddichtringO (20) are formed, it is characterized in that: between pillar (11) and central tube (7), be provided with elastic ferrule (10), central tube (7) outer wall holder seal ring (6) is by the elastic ferrule (10) and the clamping of seat seal ring (6) of seat envelope piston (21) drive.
2, washing well waterpower compression according to claim 1 down-hole base sealed packer repeatedly, it is characterized in that: be provided with in pillar (11) outside and help seal ring (13), helping seal ring (13) be convex, helps seal ring (13) and packing element wall formation wedge shape space.
3, washing well waterpower compression according to claim 1 and 2 down-hole base sealed packer repeatedly, it is characterized in that: the fixedly connected lower center tube in described central tube (7) lower end (18), lower center tube (18) forms second oil sealing cylinder with a seat big envelope (17).
4, washing well waterpower compression according to claim 1 down-hole base sealed packer repeatedly, it is characterized in that: described elastic ferrule (10) is provided with jump ring (8).
5, washing well waterpower compression according to claim 3 down-hole base sealed packer repeatedly, it is characterized in that: described central tube (7) is threaded with lower center tube (18).
6, washing well waterpower compression according to claim 1 down-hole base sealed packer repeatedly, it is characterized in that: described seat seal ring (6) is threaded with central tube (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219654 CN2490312Y (en) | 2001-04-17 | 2001-04-17 | Hydraulic compression underground repeated setting packer for washability well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219654 CN2490312Y (en) | 2001-04-17 | 2001-04-17 | Hydraulic compression underground repeated setting packer for washability well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490312Y true CN2490312Y (en) | 2002-05-08 |
Family
ID=33637419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01219654 Expired - Fee Related CN2490312Y (en) | 2001-04-17 | 2001-04-17 | Hydraulic compression underground repeated setting packer for washability well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490312Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577907A (en) * | 2018-12-07 | 2019-04-05 | 西南石油大学 | The packer that fluid pressure type can repeatedly be set |
| CN111472712A (en) * | 2020-04-13 | 2020-07-31 | 邵玉强 | Packer |
| CN113090222A (en) * | 2021-05-14 | 2021-07-09 | 大庆市晟威机械制造有限公司 | Oil field is packer in pit |
-
2001
- 2001-04-17 CN CN 01219654 patent/CN2490312Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577907A (en) * | 2018-12-07 | 2019-04-05 | 西南石油大学 | The packer that fluid pressure type can repeatedly be set |
| CN109577907B (en) * | 2018-12-07 | 2020-12-25 | 西南石油大学 | Hydraulic packer capable of setting for many times |
| CN111472712A (en) * | 2020-04-13 | 2020-07-31 | 邵玉强 | Packer |
| CN113090222A (en) * | 2021-05-14 | 2021-07-09 | 大庆市晟威机械制造有限公司 | Oil field is packer in pit |
| CN113090222B (en) * | 2021-05-14 | 2021-09-24 | 大庆市晟威机械制造有限公司 | Oil field is packer in pit |
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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 |