CN2687319Y - One-way flow flushing packer - Google Patents
One-way flow flushing packer Download PDFInfo
- Publication number
- CN2687319Y CN2687319Y CN 200320129562 CN200320129562U CN2687319Y CN 2687319 Y CN2687319 Y CN 2687319Y CN 200320129562 CN200320129562 CN 200320129562 CN 200320129562 U CN200320129562 U CN 200320129562U CN 2687319 Y CN2687319 Y CN 2687319Y
- Authority
- CN
- China
- Prior art keywords
- piston
- middle steel
- steel bushing
- packer
- upper 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
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a one-way flow well-flushing packer which mainly solves the problem of the poor effects of the well flushing and the packing of the existing packer. The utility model is characterized in that the lower end of a propelling sleeve (9) is connected with a dummy club (5) and a middle steel sleeve (12) in holes (26, 27); a 7-shaped upper piston (14) is arranged between a central tube (2) and the middle steel sleeve (12); an adjusting press cap (16) is arranged between the upper piston (14) and the middle steel sleeve (12); a piston (6) is clamped between the lower end of the middle steel sleeve (12) and the central tube (2); a spring (17) is arranged between the upper piston (14) and the piston (6). The utility model has the advantages of great well flushing effect and great packing effect.
Description
Technical field:
The utility model relates to the used packer of oil field oil production engineering seperated layer water injection field of tool, belongs to a kind of way flow washing well packer.
Background technology:
In the oil production engineering in oil field; often use packer; packer is exactly when seperated layer water injection multiple zone is divided into some intervals; the instrument of oil reservoir water absorption difference is regulated in oil reservoir control water filling; the water filling interval of water injection well results in blockage through regular meeting needs frequent well-flushing; and the flushing packer that uses at present; flushing fluid enters from the well head oil sets annular space; open the well-flushing passage by the valve of upper level packer; flow into next oil sets annular space and enter the next stage packer; until returning well head, when recovering water filling, because the injection well downhole flow regulator water nozzle is smaller from the oil pipe low side; under the well-flushing valve can not the situation of return; oil reservoir is ganged up about making, and makes packer lose the packing effect, the packing weak effect.
The utility model content:
In order to overcome the deficiency of existing packer well-washing and packing weak effect, the utility model provides a kind of way flow washing well packer, and two ends did not communicate about this packer can make, and liquid is flow backwards, and has well-flushing and packing good effectiveness.
The technical scheme that the utility model adopted is: this way flow washing well packer comprises central tube and advances cover, advance the middle steel bushing in cover mutually related boss in lower end and hole, be equipped with between central tube and the middle steel bushing and be " 7 " word shape upper piston, be equipped with the adjustment pressure cap between upper piston and the middle steel bushing, clamping piston between the lower end of middle steel bushing and the central tube is equipped with spring between upper piston and the piston.
The beneficial effects of the utility model are: owing to use this packer that a kind of well-flushing mechanism of the phenomenon that prevents to flow backwards is provided, promptly between middle steel bushing and central tube, increase a unidirectional upper piston, upper piston was tightly sealed under area pressure difference and spring force effect and is not allowed liquid flow through when end pressure was higher than the upper end instantly, making up and down, two ends are not communicated with, and packer is under the pressure effect of flushing fluid when needing well-flushing, and the last lower piston flushing fluid that is opened simultaneously enters the next stage packer.
Description of drawings:
Fig. 1 is the utility model structure sectional view;
Fig. 2 is 23 enlarged drawings of Fig. 1.
1-top connection among the figure, 2-central tube, the last steel bushing of 3-, 4-piston, 5-boss, the 6-piston, the 7-packing element, 8-sets pin, and 9-advances cover, 10-" O " shape sealing ring, the "T"-shaped sealing ring of 11-, steel bushing among the 12-, 13-groove shaped sealing ring, 14-upper piston, 15-" O " shape sealing ring, 16-adjusts pressure cap, 17-spring, 18-snap ring, steel bushing under the 19-, 20-snap ring cover, 21-lower piston, 22-lower contact, 23-fluid hole, the 24-fluid hole, 25-passage, 26-hole, 27-hole.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As Fig. 1 in conjunction with shown in Figure 2, this way flow washing well packer comprises central tube 2 and advances cover 9, advance cover mutually related boss 5 in 9 lower ends and hole (26,27) middle steel bushing 12, be equipped with upper piston 14 between central tube 2 and the middle steel bushing 12, be equipped with between upper piston 14 and the middle steel bushing 12 and adjust pressure cap 16, clamping piston 6 between the lower end of middle steel bushing 12 and the central tube 2 is equipped with spring 17 between upper piston 14 and the piston 6; Middle steel bushing 12 upper ends have boss 5, boss 5 is equipped with " O " shape sealing ring 10 outward and there is fluid hole 26 at interior center, boss 5 bottoms cooperate with piston 14, be " 7 " word shape from half sectional view upper piston 14, four kinds of hermetically-sealed constructions are arranged, "T"-shaped sealing ring 11 is arranged on the angled end-face, the fluted shape sealing ring 13 of external surface and " O " shape sealing ring 15, inner surface has " O " shape sealing ring 10, groove shaped sealing ring 13 magnitudes of interference can be adjusted by adjusting pressure cap 16, move down when flushing fluid acts on upper piston 14 promotion upper pistons 14 compression springs 17 from epicoele by hole 26, open hole (26,27) enter into oil pipe, the sleeve pipe annular space carries out well-flushing step by step.
When setting, injection pressure liquid acts on the lower piston 21 by fluid hole 23 in the tubing string, push card ring set 20, piston 6, and compression spring 17 promote in steel bushing 12, set pin 8 and cut off, it is up to piston valve to drive single current, makes packing element 7 be compressed expansion and is adjacent to casing off oil jacket space, simultaneously, snap ring 18 is stuck on the snap ring cover 20, makes packing element 7 expansions.
During well-flushing, well-flushing liquid arrives the oil jacket space by the injection allocation device, and to promote pistons 4 up for the fluid hole 24 of steel bushing 3 on process, and flow through passage 25 and hole 26 promotion pistons 14 of well-flushing liquid are descending, 27 enters into oil pipe through the hole, the sleeve pipe annular space carries out well-flushing step by step.
During deblocking, the upper lifting pipe post, top connection 1, central tube 2, last steel bushing 3, following steel bushing 19 and lower contact 22 are simultaneously up, abdicate packing element 7 Free up Memories, and packing element 7 is released, and flushing packer is suggested pit shaft.
Claims (2)
1, a kind of way flow washing well packer, comprise central tube (2) and advance cover (9), it is characterized in that: advance cover mutually related boss in (9) lower end (5) and hole (26,27) middle steel bushing (12), be equipped with between central tube (2) and the middle steel bushing (12) and be " 7 " word shape upper piston (14), be equipped with between upper piston (14) and the middle steel bushing (12) and adjust pressure cap (16), clamping piston (6) between the lower end of middle steel bushing (12) and the central tube (2) is equipped with spring (17) between upper piston (14) and the piston (6).
2, way flow washing well packer according to claim 1 is characterized in that: be inlaid with "T"-shaped sealing ring (11), groove shaped sealing ring (13) and " O " shape sealing ring (15) on the upper piston (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320129562 CN2687319Y (en) | 2003-12-24 | 2003-12-24 | One-way flow flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320129562 CN2687319Y (en) | 2003-12-24 | 2003-12-24 | One-way flow flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687319Y true CN2687319Y (en) | 2005-03-23 |
Family
ID=34662276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320129562 Expired - Fee Related CN2687319Y (en) | 2003-12-24 | 2003-12-24 | One-way flow flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687319Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926678A (en) * | 2012-12-02 | 2013-02-13 | 中国石油化工股份有限公司 | Long-tail-pipe well washing protector for preventing corrosion of casing |
-
2003
- 2003-12-24 CN CN 200320129562 patent/CN2687319Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926678A (en) * | 2012-12-02 | 2013-02-13 | 中国石油化工股份有限公司 | Long-tail-pipe well washing protector for preventing corrosion of casing |
| CN102926678B (en) * | 2012-12-02 | 2017-08-25 | 中国石油化工股份有限公司 | The long anti-casing corrosion Well-cleaning protection device of tail pipe |
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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 |