CN201129162Y - Packer capable of repeatable seat sealing - Google Patents
Packer capable of repeatable seat sealing Download PDFInfo
- Publication number
- CN201129162Y CN201129162Y CNU2007201877707U CN200720187770U CN201129162Y CN 201129162 Y CN201129162 Y CN 201129162Y CN U2007201877707 U CNU2007201877707 U CN U2007201877707U CN 200720187770 U CN200720187770 U CN 200720187770U CN 201129162 Y CN201129162 Y CN 201129162Y
- Authority
- CN
- China
- Prior art keywords
- central pipe
- packer
- oil
- central tube
- sheathed
- 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
- 238000007789 sealing Methods 0.000 title 1
- 238000012856 packing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000020477 pH reduction Effects 0.000 abstract 2
- 210000000078 claw Anatomy 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a packer used for repeated setting like the layered injection of water, acidification, squeezing and plugging in oil and water wells in oil fields, and comprises a top joint, a central pipe which is connected with the top joint by threads, a bottom joint which is connected with the central pipe by threads. An outer central pipe is sheathed on the central pipe under the bottom joint; a backwash valve is sheathed between the top joint and the outer central pipe; a rubber packer is sheathed on the outer central pipe; a lock sleeve is sheathed on the central pipe under the rubber packer; a lock claw is arranged in the lock sleeve; an upper piston and a lower piston are arranged on the central pipe in the lock sleeve. The compression typed packer has the advantages of having short and compact structure, thus comparatively finely meeting the requirement of water injection, acidification, or squeezing and plugging of the oil and water wells with big slope, casing deformation, or a big dogleg angle, repeatedly setting and flexibly setting and unsetting.
Description
Technical field
The utility model belongs to the oil recovery technique field, relates in particular to a kind of seperated layer water injection that is applied to oilfield oil well, acidifying, squeezes the packer that can repeat to set such as stifled.
Background technology
In oilfield development process, particularly bury dark complex fault block oil gas field at oil reservoir, owing to the geology reason, some inclined shafts, casing deformation well, dog-leg degree well etc. usually can appear.As everyone knows, present existing Y341-110 packer length is all more than 1.1 meters, that have even reach more than 1.4 meters, can not become or dog-leg degree section by the cover of oil-water well, can't satisfy the needs of high angle hole, casing deformation well, the big well of dog-leg degree, cause difficulty to crude oil production, reduced crude output.Therefore, a kind of short and small instrument that is used for high angle hole, casing deformation well, the big well of dog-leg degree is badly in need of in the oil field.
Summary of the invention
In order to solve big gradient, the water filling of overlapping change or the big oil-water well of dog-leg degree or acidifying better, to squeeze stifled problem, improve the crude oil total output of oil-producing region, the utility model provides a kind of total length to be no more than the packer that repeats to set of one meter compression, this packer can not only satisfy big gradient preferably, cover becomes and the needs of the big oil-water well of dog-leg degree, and can repeat to set.
The technical scheme that its technical problem that solves the utility model adopts is: comprise top connection, the central tube that is threaded with top connection, the lower contact that is threaded with central tube, be set with exterior central tube on the central tube below top connection, between top connection and exterior central tube, be set with backwash valve, on exterior central tube, also be set with packing element, be set with lock tube on the central tube below packing element, be provided with the lock pawl in lock tube, the central tube in the lock tube is provided with upper piston and lower piston.
The beneficial effects of the utility model are: the short and small compactness of this compression packer structure, and can satisfy big gradient preferably, cover becomes or the water filling of the big oil-water well of dog-leg degree or acidifying, squeeze stifled needs, and can repeat to set, set, deblocking is flexible.
Description of drawings
Fig. 1 is structural plan figure of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises top connection 1, the central tube 4 that is threaded with top connection 1, the lower contact 10 that is threaded with central tube 4, be set with exterior central tube 3 on the central tube 4 below top connection 1, between top connection 1 and exterior central tube 3, be set with backwash valve 2, on exterior central tube 3, also be set with packing element 5, be set with lock tube 7 on the central tube 4 below packing element 5, be provided with lock pawl 6 in lock tube 7, the central tube in the lock tube 7 is provided with upper piston 8 and lower piston 9.
Setting mechanism adopts the two-stage parallel connection hydraulic piston, the backwash piston adopts the hydraulic pressure return, the backwash passage is by the annular space and the elongated slot of retaining mechanism, thereby shortened the total length of packer greatly, can solve big gradient, the water filling of overlapping change or the big oil-water well of dog-leg degree or acidifying, squeeze stifled problem easily by the cover change or the dog-leg degree section of oil-water well.
The job execution step:
A, trip out former well casing post;
B, following drifting tubing string pass to the following 10-20 rice of card shut-in well section;
C, setting of casing scraper, the 10 meters scrapings repeatedly up and down of present envelope section;
D, go into the well before, connect by design tubing string figure and to go into the well.In the process of going into the well, play lower tubular column speed evenly (about 25 pieces/hour), forbid tubing string to be carried suddenly suddenly and put.
Behind the precalculated position, carry out anti-flushing well more than 8 hours under e, the packer, after well-flushing finishes, just build the pressure, make packer setting from oil pipe.
Claims (1)
1, a kind of packer that can repeat to set, comprise top connection (1), the central tube (4) that is threaded with top connection (1), the lower contact (10) that is threaded with central tube (4), it is characterized in that: be set with exterior central tube (3) on the central tube (4) below top connection (1), between top connection (1) and exterior central tube (3), be set with backwash valve (2), on exterior central tube (3), also be set with packing element (5), be set with lock tube (7) on the central tube (4) below packing element (5), be provided with lock pawl (6) in lock tube (7), the central tube in the lock tube (7) is provided with upper piston (8) and lower piston (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201877707U CN201129162Y (en) | 2007-12-28 | 2007-12-28 | Packer capable of repeatable seat sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201877707U CN201129162Y (en) | 2007-12-28 | 2007-12-28 | Packer capable of repeatable seat sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129162Y true CN201129162Y (en) | 2008-10-08 |
Family
ID=40017002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201877707U Expired - Fee Related CN201129162Y (en) | 2007-12-28 | 2007-12-28 | Packer capable of repeatable seat sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129162Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900410A (en) * | 2012-10-24 | 2013-01-30 | 中国石油化工股份有限公司 | Repeated seat seal type packing water regulator |
| CN104929563A (en) * | 2015-05-27 | 2015-09-23 | 中国石油天然气股份有限公司 | Water injection packer |
-
2007
- 2007-12-28 CN CNU2007201877707U patent/CN201129162Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900410A (en) * | 2012-10-24 | 2013-01-30 | 中国石油化工股份有限公司 | Repeated seat seal type packing water regulator |
| CN102900410B (en) * | 2012-10-24 | 2015-01-07 | 中国石油化工股份有限公司 | Repeated seat seal type packing water regulator |
| CN104929563A (en) * | 2015-05-27 | 2015-09-23 | 中国石油天然气股份有限公司 | Water injection packer |
| CN104929563B (en) * | 2015-05-27 | 2017-10-17 | 中国石油天然气股份有限公司 | Water injection packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |