CN203640676U - Expansion device of compressed expansion type packer - Google Patents
Expansion device of compressed expansion type packer Download PDFInfo
- Publication number
- CN203640676U CN203640676U CN201320863939.1U CN201320863939U CN203640676U CN 203640676 U CN203640676 U CN 203640676U CN 201320863939 U CN201320863939 U CN 201320863939U CN 203640676 U CN203640676 U CN 203640676U
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- Prior art keywords
- main body
- packer
- expansion
- expansion gear
- described main
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- 125000006850 spacer group Chemical group 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 17
- 239000007769 metal material Substances 0.000 claims description 4
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000005192 partition Methods 0.000 abstract 2
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to an expansion device of a compressed expansion type packer. The expansion device comprises a body, at least one partition ring and an expansion assistance ring, wherein a center tube of the packer is sleeved with the body, the body can expand under the pressure, the two ends of the body are respectively provided with a protective head which is used for being connected with a pressure exerting mechanism of the packer, the partition ring is arranged on the outer wall of the body and divides the body into multiple sections, and the expansion assistance ring is arranged on the inner wall of the body and used for assisting in compressed expansion of the body. Due to the compressed expansion type, larger annular empty space can be packed, and the packer can be effectively sealed and unsealed; meanwhile, the expansion device can be repeatedly used, and therefore cost is saved, and operation is convenient.
Description
Technical field
The utility model relates to petroleum drilling Well Completion Engineering of Oil Reservoirs field, relates in particular to a kind of expansion gear of compression-expansion formula packer.
Background technology
Packer is one of critical instrument in petroleum drilling engineering, Well Completion Engineering of Oil Reservoirs technical field.Packer is mainly used in realizing the multilayer packing sealing of oil well casing inside, thereby facilitates subsequent handling to carry out.But because the packer using is at present mostly compression-expansion formula packer, and its critical component of realizing packing sealing function is again packing element, therefore the quality of packing element is directly connected to the effect of packing sealing.
At present, compression-expansion formula packer is mostly disposable, and that is because it is mainly used in Well Completion Engineering of Oil Reservoirs, and Well Completion Engineering of Oil Reservoirs is without Reusability.But, along with the development of drilling engineering technology, impel compression-expansion formula packer in drilling engineering need to there is the function of Reusability.Because compression-expansion formula packer is not considered reusing of packing element in design, it can not be retained on former operating position after use, thereby cause again setting.In addition, also there are following several shortcomings in existing packing element: the size of packing element and annular space size approach, cause being difficult to installing, but also easily wearing and tearing; Because self design is not enough, thereby be difficult to realize the packing sealing of large annular space.
Utility model content
The expansion gear that technical problem to be solved in the utility model is to provide a kind of compression-expansion formula packer replaces the packing element using traditionally, it not only can the larger annular space of packing, but also can effectively realize setting and deblocking of packer, simultaneously all right Reusability, thereby cost-saving and handled easily.
The utility model provides a kind of expansion gear of compression-expansion formula packer, comprising: the central tube that is enclosed within packer also can depressed the main body of expansion outward, and its two ends are equipped with the protection head for being connected with the pressure exerting arrangement of packer; Be arranged on the outer wall of main body and main body packing become at least one spacer ring of multistage; Be arranged on the inwall of main body for auxiliary main body expand by compression help tensioner ring.
In one embodiment, main body is divided into some sections equal in length by spacer ring, in the main body inner wall in every section, is equipped with and helps tensioner ring.
In one embodiment, main body is made up of colloidal materials.
In one embodiment, a protection head is affixed with central tube, and another protection head and the socket of central tube slidingtype.
In one embodiment, main body is embedded in protection head and is fixed together with it.
In one embodiment, help tensioner ring be embedded on the inwall of main body and flush with inwall.
In one embodiment, helping tensioner ring to be configured to cross section is semicircular ring.
In one embodiment, spacer ring comprises the boss that some edges circumferentially distribute and radially inwardly stretch out at interval, and main body comprises the groove being arranged on main body outer wall for matching with boss.
In one embodiment, protection head and spacer ring are made by metal material.
In one embodiment, the external diameter of spacer ring is than the large 1～3mm of the external diameter of main body.
According to the expansion gear of compression-expansion formula packer of the present utility model, it not only can prevent main body wearing and tearing and the larger annular space of packing, but also can effectively rely on the power of self returning to restore to the original state.Wherein, this expansion gear one end protection head is affixed with central tube, the next use location of so abundant guarantee, thus make it can Reusability.In addition, simple in structure, easy to process according to the expansion gear of compression-expansion formula packer of the present utility model, uses safe and efficiently, is convenient to practice and extension application.
Brief description of the drawings
To be described in more detail the utility model based on embodiment and with reference to accompanying drawing hereinafter.Wherein:
Fig. 1 has shown according to the structural representation of the expansion gear of compression-expansion formula packer of the present utility model.
Fig. 2 is the sectional view along A-A line in Fig. 1.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to actual scale.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 has shown according to the expansion gear 10 of compression-expansion formula packer of the present utility model.This expansion gear 10 comprise the colloid of general tube shape main body 4, can depressed the main body 4 of expansion, and be arranged on the protection 1,8 at main body 4 two ends.Main body 4 and protection 1, a 8 central tube 9(that are all enclosed within packer are shown in Fig. 2) on outer wall.
In this embodiment, in order to realize the Reusability of compression-expansion formula packer, can by affixed with central tube 9 protection of main body 4 one end 1, be for example threaded, and the protection of the other end 8 and central tube 9 slidingtypes sockets.Wherein, protection 8 is also connected with pressure exerting arrangement, makes pressure exerting arrangement to protect 8 and compress body 4 by pushing, thereby realizes setting of packer.In order to ensure above-mentioned characteristic, protection 1,8 can be made up of metal material.Easily understand, pressure exerting arrangement is prior art but not technology of the present utility model, and therefore no further details to be given herein.
In this embodiment, main body 4 is embedded in protection 1,8 and is fixed together with it, can effectively prevent that the main body 4 of pressurized is torn.Also can ensure thus stability and the tightness of syndeton.In a preferred embodiment, together with main body 4 can be directly injection-moulded in protection 1,8.
According to the utility model, this expansion gear 10 also comprises at least one spacer ring 3 being arranged on main body 4 outer walls.Main body 4 is divided into some sections equal in length by spacer ring 3.In the process of main body 4 pressurizeds, the main body 4 of spacer ring 3 in not only can ensureing every section be all evenly to expanded radially, but also can prevent the local protuberance of main body 4 and cause setting failure.In addition, this main body 4 is constructable longer, so that the larger annular space of packing.Through experimental verification, in the time that spacer ring 3 quantity are elected two as, this packer set best results.
In this embodiment, spacer ring 3 comprises the boss that some edges are circumferentially divided at interval and radially inwardly stretched out, and main body 4 comprises the groove being arranged on main body 4 outer walls for matching with boss.In this way, can ensure that main body 4 is still integral type on the one hand, also can ensure on the other hand the stability connecting.In order to prevent the wearing and tearing of expansion gear 10, the external diameter of spacer ring 3 can be configured to than the large 1～3mm of the external diameter of main body 4.According to the demand of above-mentioned characteristic, spacer ring can be made up of metal material.
Also comprise and help tensioner ring 2 according to compression-expansion formula packer inflation device 10 of the present utility model, it is arranged on the inwall of main body 4.Help tensioner ring 2 can provide larger expanded radially power to it in main body 4 pressurized process, thereby realize large annular space packing sealing.Help tensioner ring 2 to be arranged in each segment of main body 4, preferably in every section of axial centre place.Like this, just, can ensure main body 4 range of expansion maximums.
In the illustrated embodiment, helping tensioner ring 2 can be configured to cross section is semicircular ring.Help the outer ring face of tensioner ring 2 to be embedded into completely in the inwall of main body 4, and inner peripheral surface flush with the inwall of main body 4.Like this, be convenient to help tensioner ring 2 to move axially.Checking by experiment, in the time helping tensioner ring 2 to be configured to cross section to be semicircular ring, main body 4 range of expansion maximums, sealing effectiveness is better.
Below introduce according to the operating principle of the expansion gear 10 of compression-expansion formula packer of the present utility model.Set process: the pressure exerting arrangement of packer can pass through protection 8 compress body 4 of expansion gear 10; The main body 4 of pressurized can and help under the acting in conjunction of tensioner ring 2 at spacer ring 3 expanded radially occurs, thereby realizes setting of packer.Deblocking process: the pressure exerting arrangement of packer shrinks, this expansion gear 10 relies on the power of self returning of main body 4 to restore to the original state simultaneously, and deblocking completes.Because protection 1 is fixedly connected with central tube 9, therefore it can ensure that this expansion gear 10, always in this position, can guarantee carrying out smoothly of use next time thus.
According to the expansion gear 10 of compression-expansion formula packer of the present utility model, it not only can prevent main body 4 wearing and tearing and the larger annular spaces of packing, but also can effectively rely on the power of self returning to restore to the original state.Wherein, the protection of these expansion gear 10 one end 1 is affixed with central tube 9, can effectively ensure like this use location, thereby makes it can Reusability.
Simple in structure, easy to process according to the expansion gear 10 of compression-expansion formula packer of the present utility model, uses safe and efficiently, is convenient to practice and extension application.
Although the utility model is described with reference to preferred embodiment, in the situation that not departing from scope of the present utility model, can carries out various improvement and can replace parts wherein with equivalent it.Especially, only otherwise have structural hazard, every technical characterictic of mentioning in each embodiment all can combine in any way.The utility model is not limited to disclosed specific embodiment in literary composition, but comprises all technical schemes in the scope that falls into claim.
Claims (10)
1. an expansion gear for compression-expansion formula packer, is characterized in that, comprising:
The central tube that is enclosed within packer also can depressed the main body of expansion outward, and its two ends are equipped with the protection head for being connected with the pressure exerting arrangement of packer,
Be arranged on the outer wall of described main body and described main body packing become at least one spacer ring of multistage,
Be arranged on the inwall of described main body for auxiliary described main body expand by compression help tensioner ring.
2. the expansion gear of packer according to claim 1, is characterized in that, described main body is divided into some sections equal in length by described spacer ring, in the main body inner wall in every section, is equipped with and helps tensioner ring.
3. the expansion gear of packer according to claim 1 and 2, is characterized in that, described main body is made up of colloidal materials.
4. the expansion gear of packer according to claim 1 and 2, is characterized in that, a protection head is affixed with central tube, and another protection head and the socket of central tube slidingtype.
5. the expansion gear of packer according to claim 1 and 2, is characterized in that, described main body is embedded in described protection head and is fixed together with it.
6. the expansion gear of packer according to claim 1 and 2, is characterized in that, described in help tensioner ring be embedded on the inwall of described main body and flush with inwall.
7. the expansion gear of packer according to claim 1 and 2, is characterized in that, described in to help tensioner ring to be configured to cross section be semicircular ring.
8. the expansion gear of packer according to claim 1 and 2, it is characterized in that, described spacer ring comprises the boss that some edges circumferentially distribute and radially inwardly stretch out at interval, and described main body comprises the groove being arranged on described main body outer wall for matching with described boss.
9. the expansion gear of packer according to claim 1 and 2, is characterized in that, described protection head and spacer ring are made by metal material.
10. the expansion gear of packer according to claim 1 and 2, is characterized in that, the external diameter of described spacer ring is than the large 1～3mm of the external diameter of described main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863939.1U CN203640676U (en) | 2013-12-25 | 2013-12-25 | Expansion device of compressed expansion type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863939.1U CN203640676U (en) | 2013-12-25 | 2013-12-25 | Expansion device of compressed expansion type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203640676U true CN203640676U (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320863939.1U Expired - Lifetime CN203640676U (en) | 2013-12-25 | 2013-12-25 | Expansion device of compressed expansion type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203640676U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178907A (en) * | 2015-09-01 | 2015-12-23 | 上海大学 | Compression packer sealing structure |
| CN108224061A (en) * | 2018-03-14 | 2018-06-29 | 苏州秀创会展服务有限公司 | A kind of aluminium section bar connection cover component |
| CN112855064A (en) * | 2021-02-19 | 2021-05-28 | 大庆市天德忠石油科技有限公司 | High-strength compression type packer rubber barrel structure |
-
2013
- 2013-12-25 CN CN201320863939.1U patent/CN203640676U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178907A (en) * | 2015-09-01 | 2015-12-23 | 上海大学 | Compression packer sealing structure |
| CN108224061A (en) * | 2018-03-14 | 2018-06-29 | 苏州秀创会展服务有限公司 | A kind of aluminium section bar connection cover component |
| CN112855064A (en) * | 2021-02-19 | 2021-05-28 | 大庆市天德忠石油科技有限公司 | High-strength compression type packer rubber barrel structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |