CN202832365U - Small-diameter separate-layer water injection packer - Google Patents
Small-diameter separate-layer water injection packer Download PDFInfo
- Publication number
- CN202832365U CN202832365U CN 201220452686 CN201220452686U CN202832365U CN 202832365 U CN202832365 U CN 202832365U CN 201220452686 CN201220452686 CN 201220452686 CN 201220452686 U CN201220452686 U CN 201220452686U CN 202832365 U CN202832365 U CN 202832365U
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- Prior art keywords
- central tube
- spring
- seat
- honour
- packing element
- Prior art date
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Links
- 238000002347 injection Methods 0.000 title abstract description 24
- 239000007924 injection Substances 0.000 title abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 42
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000011010 flushing procedure Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000012856 packing Methods 0.000 claims description 53
- 238000005987 sulfurization reaction Methods 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 16
- 238000011001 backwashing Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A small diameter zonal injection packer, comprising: the central tube is provided with a liquid outlet and a liquid inlet; the sealing mechanism is provided with an outer sleeve, the upper end of the outer sleeve is connected with a connecting sleeve, a liquid inlet cavity communicated with the liquid inlet hole is formed between the connecting sleeve and the central pipe, and a vulcanized core assembly which is slidably sleeved outside the central pipe is arranged in the liquid inlet cavity; the deblocking mechanism is provided with a well washing cylinder sleeve, a spring outer sleeve, a spring lower seat and a rubber cylinder upper seat which are sequentially connected, the spring upper seat is clamped between the spring outer sleeve and the central pipe, and the spring upper seat is provided with a through hole communicated with the liquid outlet hole; the rubber cylinder assembly is sleeved outside the central tube, the upper end of the rubber cylinder assembly is connected with the upper rubber cylinder seat, the lower end of the rubber cylinder assembly is connected with the connecting sleeve, and an annular channel which is respectively communicated with the liquid inlet cavity and the liquid outlet channel is formed between the rubber cylinder assembly and the central tube. The utility model discloses a suppress in ground to the oil pipe, can control the setting of packer, the deblocking of packer is realized to the backwashing well, and the well-flushing passageway is big after the deblocking, and the well-flushing is more unobstructed, more thorough.
Description
Technical field
The utility model is relevant for a kind of oil field well water injection tool, especially relevant for a kind of minor diameter layered waterflooding packer that is applied to sleeve pipe water injection well subdivision injection technology.
Background technology
At present, Liaohe Oil Field small casing well, for example 4 " nearly more than 100 mouthfuls of sleeve pipe, be subjected to casing size and survey conditioning technology and limit, the existing main commingled water injection technology that adopts, wherein the minority oil well is used the mode water filling of water injection through tubing and casing again.Along with the prolongation of water injection time, such oil-water well interlayer contradiction becomes increasingly conspicuous, and the injected water individual layer is advanced by leaps and bounds seriously, affects flood effectiveness, the corresponding oil well of part even water logging closing well.Therefore, it is extremely urgent to solve such oil-water well subdivision of reservoir water filling difficult problem.
Existing oil-water well water filling, the main Y341 water injection packer that adopts carries out the packing water filling to the oil jacket annular space, because the crack centered by the anti-flushing well passage of Y341 water injection packer between pipe and the exterior central tube, this crack is positioned at the Y341 water injection packer, the outside dimension of Y341 water injection packer is affected by casing size, and the anti-flushing well channel space in it is limited, and the well-flushing passage is less and cause well-flushing to have some setbacks, thereby can not fully carry out clean-out service to oil pipe and oil jacket annular space, well-flushing is not thorough.
Therefore, be necessary to provide a kind of novel layered waterflooding packer, overcome defects.
The utility model content
The purpose of this utility model provides a kind of minor diameter layered waterflooding packer, by suppressing in oil pipe on ground, can control setting of packer, anti-flushing well is realized the deblocking of packer, the solution well-flushing passage of being honored as a queen is large, and well-flushing is more unobstructed, more thorough, and job execution is easy to be reliable.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides a kind of minor diameter layered waterflooding packer, and described minor diameter layered waterflooding packer comprises:
Central tube, its upper end is connected with top connection, and its lower end is connected with lower contact, offers fluid hole and inlet opening on the described central tube;
Sealing mechanism, it has the overcoat that is set in outside the described central tube, the upper end of described overcoat is connected with adapter sleeve, its lower end links to each other with described lower contact, be formed with admission chamber between described adapter sleeve and the described central tube, described inlet opening is connected with described admission chamber, be provided with the sulfuration core assembly in the described admission chamber, described sulfuration core assembly is set in outside the described central tube slidably, be folded with spring between the upper end of described sulfuration core assembly and the described adapter sleeve, in the lower end of described sulfuration core assembly contact under the state of the upper end of described overcoat, the channel enclosed of described inlet opening and described admission chamber;
Separate sealing mechanism, it has the well-flushing cylinder sleeve that is set in outside the described central tube, the upper end of described well-flushing cylinder sleeve links to each other with described top connection, its lower end is connected with spring overcoat in turn, spring lower seat and the packing element seat of honour, between described spring overcoat and described central tube, be folded with the spring seat of honour, described spring offers perforation on the seat of honour, described perforation is relative with described fluid hole, be folded with spring between the upper end at the described spring seat of honour and the described spring lower seat, its lower end contacts with described spring lower seat sealing, be formed with liquid outlet channel between described spring lower seat and the described central tube, under described perforation and state that described liquid outlet channel is connected, described fluid hole is connected with described liquid outlet channel;
The packing element assembly, it is set in outside the described central tube, the upper end of described packing element assembly links to each other with the described packing element seat of honour, its lower end is connected to the upper end of described adapter sleeve, be formed with the circular passage between described packing element assembly and the described central tube, described circular passage is connected with described admission chamber, described liquid outlet channel respectively.
In preferred embodiment, described packing element assembly comprises packing element and is connected to the packing element base at packing element two ends.
In preferred embodiment, be provided with seal cylinder sleeve in the described liquid outlet channel, the upper end of described seal cylinder sleeve contacts with the lower end sealing at the described spring seat of honour, its lower end is connected on the described packing element seat of honour, offer through hole on the described seal cylinder sleeve, described liquid outlet channel is connected with described circular passage by described through hole.
In preferred embodiment, between described top connection and the described central tube, between the described spring seat of honour and the described central tube, between described spring overcoat and the described spring seat of honour, between the described spring seat of honour and the described spring lower seat, between described spring lower seat and the described spring overcoat, between described seal cylinder sleeve and the described central tube, between described seal cylinder sleeve and the described spring seat of honour, between the described packing element seat of honour and the described spring lower seat, between described sulfuration core assembly and the described central tube, between described overcoat and the described adapter sleeve, and be respectively equipped with a plurality of O-ring seals between described lower contact and the described overcoat.
In preferred embodiment, the lower end of described sulfuration core assembly is connected with rubber ring.
In preferred embodiment, the external diameter of described minor diameter layered waterflooding packer is 80mm, and the internal diameter of described central tube is 40mm.
Characteristics and the advantage of minor diameter layered waterflooding packer of the present utility model are: by suppressing in oil pipe on ground, can control setting of packer, and, by on ground in the oil jacket annular space water filling suppress, anti-flushing well is realized the deblocking to packer, and be honored as a queen in solution, continue to oil jacket annulus water injection and suppress, can be more unobstructed, more thoroughly sleeve pipe and oil pipe are carried out clean-out service.The packing element of packing element assembly of the present utility model is that expansion type sets, and it can make packing element rebound under the pressure of 2-3MPa, realizes clean-out service.In addition, the outer 80mm of the external diameter of minor diameter layered waterflooding packer of the present utility model, also be, when packer does not set, the external diameter of packing element assembly is 80mm, it can be applicable to 4 " sleeve pipe water injection well subdivision injection, can repeat to realize setting, deblocking and well-flushing, for the operation of small casing water injection well realizes setting with the well-flushing deblocking giving security smoothly.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of minor diameter layered waterflooding packer of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of minor diameter layered waterflooding packer, and it comprises central tube 1, sealing mechanism 2, separates sealing mechanism 3 and packing element assembly 4.Wherein: the upper end of central tube 1 is connected with top connection 11, and its lower end is connected with lower contact 12, offers fluid hole 13 and inlet opening 14 on the described central tube 1; Sealing mechanism 2 has the overcoat 21 that is set in outside the described central tube 1, the upper end of described overcoat 21 is connected with adapter sleeve 22, its lower end links to each other with described lower contact 12, be formed with admission chamber 23 between described adapter sleeve 22 and the described central tube 1, described inlet opening 14 is connected with described admission chamber 23, be provided with sulfuration core assembly 24 in the described admission chamber 23, described sulfuration core assembly 24 is set in outside the described central tube 1 slidably, be folded with spring 25 between the upper end of described sulfuration core assembly 24 and the described adapter sleeve 22, in the lower end of described sulfuration core assembly 24 contact under the state of the upper end of described overcoat 21, the channel enclosed of described inlet opening 14 and described admission chamber 23; Separate sealing mechanism 3 and have the well-flushing cylinder sleeve 31 that is set in outside the described central tube 1, the upper end of described well-flushing cylinder sleeve 31 links to each other with described top connection 11, its lower end is connected with spring overcoat 32 in turn, spring lower seat 33 and the packing element seat of honour 34, between described spring overcoat 32 and described central tube 1, be folded with the spring seat of honour 35, offer perforation 351 on the described spring seat of honour 35, described perforation 351 is relative with described fluid hole 13, be folded with spring 36 between the upper end at the described spring seat of honour 35 and the described spring lower seat 33, its lower end contacts with described spring lower seat 33 sealings, be formed with liquid outlet channel 37 between described spring lower seat 33 and the described central tube 1, under described perforation 351 and state that described liquid outlet channel 37 is connected, described fluid hole 13 is connected with described liquid outlet channel 37; Packing element assembly 4 is set in outside the described central tube 1, the upper end of described packing element assembly 4 links to each other with the described packing element seat of honour 34, its lower end is connected to the upper end of described adapter sleeve 22, be formed with circular passage 41 between described packing element assembly 4 and the described central tube 1, described circular passage 41 is connected with described admission chamber 23, described liquid outlet channel 37 respectively.
Specifically, central tube 1 is cylinder barrel shaped substantially, and its middle part offers the through hole 15 of axial perforation, in the utility model, and the diameter of through hole 15, the internal diameter that also is central tube is 40mm; The upper end of central tube 1 is provided with external thread section, and the lower end of top connection 11 is provided with internal thread segment, and the external thread section of central tube 1 by its upper end is threaded on the internal thread segment of top connection 11 lower ends and links to each other with top connection 11; The lower end of central tube 1 is provided with external thread section, and the upper end of lower contact 12 is provided with internal thread segment, and the external thread section of central tube 1 by its lower end is threaded on the internal thread segment of lower contact 12 upper ends and links to each other with lower contact 12; The inlet opening 14 of central tube 1 is opened in the bottom of central tube 1, and the fluid hole 13 of central tube 1 is opened in the top of central tube 1.
The bottom that sealing mechanism 2 is set in central tube 1 is provided with the position of inlet opening 14, the lower end of its overcoat 21 is connected to the upper outside of lower contact 12 by screw 211, the inlet opening 14 of offering on overcoat 21 and the central tube 1 is relative, be formed with flow channels 212 between overcoat 21 and the central tube 1, inlet opening 14 is connected with flow channels 212; Adapter sleeve 22 is connected to the outside, upper end of overcoat 21, be provided with sulfuration core assembly 24 in the admission chamber 23 that forms between itself and the central tube 1, admission chamber 23 is connected with flow channels 212, and sulfuration core assembly 24 closely is set in outside the central tube 1, and it can move axially along central tube 1; The top of adapter sleeve 22 radially inwardly convexes with ring fin 221, spring 25 is set on the central tube 1, its upper end contact is on ring fin 221, its lower end contact is in the upper end of sulfuration core assembly 24, under the effect of spring 25 elastic forces, the lower end of sulfuration core assembly 24 and the upper end of overcoat 21 offset, and this moment, flow channels 212 was closed, and the liquid that flows in the flow channels 212 from inlet opening 14 can not flow in the admission chamber 23.
Separate top that sealing mechanism 3 is set in central tube 1 and be provided with the position of fluid hole 13, the upper end of its well-flushing cylinder sleeve 31 is connected to the lower outside of top connection 11 by screw 311, offers well-flushing inlet opening 312 on the well-flushing cylinder sleeve 31; The upper end of spring overcoat 32 is threaded in the inboard, lower end of well-flushing cylinder sleeve 31, its lower end is threaded in the outside, upper end of spring lower seat 33, be formed with annular container cavity 321 between spring overcoat 32 and the central tube 1, be provided with the spring seat of honour 35 that closely is set on the central tube 1 in the annular container cavity 321, spring 36 is set on the central tube 1, its upper end offsets with the spring seat of honour 35, and its lower end contact is on spring lower seat 33; The perforation 351 of offering on the spring seat of honour 35 is relative with the fluid hole 13 of central tube 1, under the effect of spring 36 elastic forces, because the outside, the lower end at the spring seat of honour 35 contacts with the upper end inner seal of spring lower seat 33, the perforation 351 on the spring seat of honour 35 is not connected with liquid outlet channel 37; When the spring seat of honour 35 axially moves down, also be that spring 36 is when compressed, the perforation 351 at the spring seat of honour 35 is connected with liquid outlet channel 37, fluid hole 13 on the central tube 1 forms connected states with this liquid outlet channel 37, and the perforation 351 that the liquid in the liquid outlet channel 37 can be on the spring seat of honour 35, the fluid hole 13 of central tube 1 flow in the central tubes 1.
Further, separate sealing mechanism 3 and have seal cylinder sleeve 38, it is arranged in the liquid outlet channel 37, side seal contacts outside the lower end at the upper end of seal cylinder sleeve 38 and the spring seat of honour 35, its lower end is inboard by the upper end that screw 381 is connected to the packing element seat of honour 34, and the through hole 382 of offering on the seal cylinder sleeve 38 provides communicating passage for the circular passage 41 that forms between liquid outlet channel 37 and packing element assembly 4 and the central tube 1.
Packing element assembly 4 is set in the middle part of central tube 1, and its upper end links to each other with solution sealing mechanism 3, and its lower end links to each other with sealing mechanism 2.In the utility model, packing element assembly 4 is comprised of the packing element base 43 that packing element 42 and sulfuration are connected to packing element 42 two ends, is formed with circular passage 41 between packing element 42 and the central tube 1, and circular passage 41 is connected with admission chamber 23 and liquid outlet channel 37 respectively.
Minor diameter layered waterflooding packer of the present utility model, when water injection well is carried out packing, at first, water filling is suppressed in the through hole 15 of central tube 1, injected water is in the inlet opening 14 of central tube 1 bottom enters flow channels 212 between overcoat 21 and the central tube 1, increase along with injected water hydraulic pressure, injected water promotes sulfuration core assembly 24 and axially moves up, sulfuration core assembly 24 axial compression springs 25, at this moment, the upper end of overcoat 21 is left in the lower end of sulfuration core assembly 24, admission chamber 23 between flow channels 212 and adapter sleeve 22 and the central tube 1 forms connected state, injected water flows in the admission chamber 23 from flow channels 212, flows into afterwards in the circular passage 41 between packing element assembly 4 and the central tube 1, because this moment, liquid outlet channel 37 was not connected with the fluid hole 13 of central tube 1, under the effect of the injected water hydraulic pressure that constantly increases, the packing element 42 of packing element assembly 4 will radially outward expand, and then set in sleeve pipe, with Seal Oil cover annular space.During pressure in laying down central tube 1, sulfuration core assembly 24 is axially displacement downwards under the elastic-restoring force effect of spring 25, until contact is on overcoat 21, with sealing flow channels 212, admission chamber 23 interior pressure will remain under the state that sets pressure this moment, finish setting of oil jacket annular space.In the utility model, the lower end of sulfuration core assembly 24 is connected with rubber ring 241, and rubber ring 241 can make the sealing consolidation more between sulfuration core assembly 24 and the overcoat 21, avoids injected water to spill, and prevents deblocking.
When the well-flushing deblocking, at first, stop the through hole 15 interior water fillings to central tube 1, injected water is squeezed in the oil jacket annular space, the well-flushing inlet opening 312 of injected water on well-flushing cylinder sleeve 31 flows into, under the effect of the injected water hydraulic pressure that constantly increases, the spring seat of honour 35 axially moves down, spring 36 is compressed, along with moving down of the spring seat of honour 35, the perforation 351 at the spring seat of honour 35 will be connected with liquid outlet channel 37, and the injected waters in the circular passage between packing element assembly 4 and the central tube 1 41 just pass through the through hole 382 of seal cylinder sleeve 38 from liquid outlet channel 37 at this moment, perforation 351 and fluid hole 13 flow in the central tube 1, packing element assembly 4 radially inwardly bounces back, and realizes deblocking; At this moment, continue to oil jacket annulus water injection and suppress, injected water flows into the water injection well shaft bottom from the oil jacket annular space, and then the ball valve by jack-up water injection well shaft bottom instead flows out ground to oil pipe, finishes the clean-out service to sleeve pipe and oil pipe.
Minor diameter layered waterflooding packer of the present utility model, by suppressing in oil pipe on ground, can control setting of packer, and, by on ground in the oil jacket annular space water filling suppress, anti-flushing well is realized the deblocking to packer, and is honored as a queen in solution, continuation to oil jacket annulus water injection suppress, can be more unobstructed, more thoroughly sleeve pipe and oil pipe are carried out clean-out service.The packing element 42 of packing element assembly 4 of the present utility model is for expansion type sets, and it can make packing element 42 rebound under the pressure of 2-3MPa, realizes clean-out service.In addition, the external diameter of minor diameter layered waterflooding packer of the present utility model is 80mm, also be, when packer does not set, the external diameter of packing element assembly 4 is 80mm, it can be applicable to 4 " sleeve pipe water injection well subdivision injection, can repeat to realize setting, deblocking and well-flushing, for the operation of small casing water injection well realizes setting with the well-flushing deblocking giving security smoothly.
According to an embodiment of the present utility model, between described top connection 11 and the described central tube 1, between the described spring seat of honour 35 and the described central tube 1, between described spring overcoat 32 and the described spring seat of honour 35, between the described spring seat of honour 35 and the described spring lower seat 33, between described spring lower seat 33 and the described spring overcoat 32, between described seal cylinder sleeve 38 and the described central tube 1, between described seal cylinder sleeve 38 and the described spring seat of honour 35, between the described packing element seat of honour 34 and the described spring lower seat 33, between described sulfuration core assembly 24 and the described central tube 1, between described overcoat 21 and the described adapter sleeve 22, and be respectively equipped with a plurality of O-ring seals 5 between described lower contact 12 and the described overcoat 21.
O-ring seals 5 is used for sealing top connection 11, lower contact 12, the spring seat of honour 35, seal cylinder sleeve 38, sulfuration core assembly 24 respectively and the slit of 1 of central tube, and spring overcoat 32, described spring lower seat 33 are respectively and the slit at 35 at the spring seat of honour, and seal cylinder sleeve 38 and the spring seat of honour 33, and the slit between spring overcoat 32, the packing element seat of honour 34 and the spring lower seat 33, and adapter sleeve 22, lower contact 12 are respectively and the slit of 21 in overcoat, improve the sealing performance of minor diameter layered waterflooding packer of the present utility model, prevent that the situation that injected water leaks outside from occuring.
The above only is several embodiment of the present utility model, and those skilled in the art can carry out various changes or modification to the utility model embodiment according to the disclosed content of application documents and not break away from spirit and scope of the present utility model.
Claims (6)
1. a minor diameter layered waterflooding packer is characterized in that, described minor diameter layered waterflooding packer comprises:
Central tube, its upper end is connected with top connection, and its lower end is connected with lower contact, offers fluid hole and inlet opening on the described central tube;
Sealing mechanism, it has the overcoat that is set in outside the described central tube, the upper end of described overcoat is connected with adapter sleeve, its lower end links to each other with described lower contact, be formed with admission chamber between described adapter sleeve and the described central tube, described inlet opening is connected with described admission chamber, be provided with the sulfuration core assembly in the described admission chamber, described sulfuration core assembly is set in outside the described central tube slidably, be folded with spring between the upper end of described sulfuration core assembly and the described adapter sleeve, in the lower end of described sulfuration core assembly contact under the state of the upper end of described overcoat, the channel enclosed of described inlet opening and described admission chamber;
Separate sealing mechanism, it has the well-flushing cylinder sleeve that is set in outside the described central tube, the upper end of described well-flushing cylinder sleeve links to each other with described top connection, its lower end is connected with spring overcoat in turn, spring lower seat and the packing element seat of honour, between described spring overcoat and described central tube, be folded with the spring seat of honour, described spring offers perforation on the seat of honour, described perforation is relative with described fluid hole, be folded with spring between the upper end at the described spring seat of honour and the described spring lower seat, its lower end contacts with described spring lower seat sealing, be formed with liquid outlet channel between described spring lower seat and the described central tube, under described perforation and state that described liquid outlet channel is connected, described fluid hole is connected with described liquid outlet channel;
The packing element assembly, it is set in outside the described central tube, the upper end of described packing element assembly links to each other with the described packing element seat of honour, its lower end is connected to the upper end of described adapter sleeve, be formed with the circular passage between described packing element assembly and the described central tube, described circular passage is connected with described admission chamber, described liquid outlet channel respectively.
2. minor diameter layered waterflooding packer as claimed in claim 1 is characterized in that, described packing element assembly comprises packing element and is connected to the packing element base at packing element two ends.
3. minor diameter layered waterflooding packer as claimed in claim 1, it is characterized in that, be provided with seal cylinder sleeve in the described liquid outlet channel, the upper end of described seal cylinder sleeve contacts with the lower end sealing at the described spring seat of honour, its lower end is connected on the described packing element seat of honour, offer through hole on the described seal cylinder sleeve, described liquid outlet channel is connected with described circular passage by described through hole.
4. minor diameter layered waterflooding packer as claimed in claim 3, it is characterized in that, between described top connection and the described central tube, between the described spring seat of honour and the described central tube, between described spring overcoat and the described spring seat of honour, between the described spring seat of honour and the described spring lower seat, between described spring lower seat and the described spring overcoat, between described seal cylinder sleeve and the described central tube, between described seal cylinder sleeve and the described spring seat of honour, between the described packing element seat of honour and the described spring lower seat, between described sulfuration core assembly and the described central tube, between described overcoat and the described adapter sleeve, and be respectively equipped with a plurality of O-ring seals between described lower contact and the described overcoat.
5. minor diameter layered waterflooding packer as claimed in claim 1 is characterized in that, the lower end of described sulfuration core assembly is connected with rubber ring.
6. minor diameter layered waterflooding packer as claimed in claim 1 is characterized in that, the external diameter of described minor diameter layered waterflooding packer is 80mm, and the internal diameter of described central tube is 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452686 CN202832365U (en) | 2012-09-06 | 2012-09-06 | Small-diameter separate-layer water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452686 CN202832365U (en) | 2012-09-06 | 2012-09-06 | Small-diameter separate-layer water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832365U true CN202832365U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220452686 Expired - Fee Related CN202832365U (en) | 2012-09-06 | 2012-09-06 | Small-diameter separate-layer water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653145A (en) * | 2013-11-25 | 2015-05-27 | 天津大港油田钻采技术开发公司 | Long-rubber-barrel differential pressure type water filling packer capable of washing well |
| CN106121579A (en) * | 2016-09-06 | 2016-11-16 | 中国石油化工股份有限公司 | Bi-directional compression hydraulic setting is without anchoring packer and using method thereof |
-
2012
- 2012-09-06 CN CN 201220452686 patent/CN202832365U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653145A (en) * | 2013-11-25 | 2015-05-27 | 天津大港油田钻采技术开发公司 | Long-rubber-barrel differential pressure type water filling packer capable of washing well |
| CN106121579A (en) * | 2016-09-06 | 2016-11-16 | 中国石油化工股份有限公司 | Bi-directional compression hydraulic setting is without anchoring packer and using method thereof |
| CN106121579B (en) * | 2016-09-06 | 2018-08-21 | 中国石油化工股份有限公司 | Bi-directional compression hydraulic setting is without anchoring packer and its application method |
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| 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: 20130327 Termination date: 20210906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |