CN201078217Y - Stream commutator - Google Patents
Stream commutator Download PDFInfo
- Publication number
- CN201078217Y CN201078217Y CNU2007200280633U CN200720028063U CN201078217Y CN 201078217 Y CN201078217 Y CN 201078217Y CN U2007200280633 U CNU2007200280633 U CN U2007200280633U CN 200720028063 U CN200720028063 U CN 200720028063U CN 201078217 Y CN201078217 Y CN 201078217Y
- Authority
- CN
- China
- Prior art keywords
- central tube
- urceolus
- lower contact
- fixedly connected
- hole
- 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
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 4
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Motor Or Generator Current Collectors (AREA)
Abstract
A water current reverser is different in that: an upper contact (1) is fixedly connected with an end of an external cylinder (4), and the other end of the external cylinder (4) is fixedly connected with a lower contact (7). The internal of the lower contact (7) is fixedly connected with a central tube (2). A reversing piston (3) is movably connected between the external cylinder (4) and the central tube (2). An external hole (6) is mounted at one end of the external cylinder (4), approaching to the lower contact (7). An internal hole (5) is arranged on the central tube (2), and the distance between the external hole (6) and the internal hole (5) is larger than the thickness of the reversing piston (3). Therefore, the utility model, which has simple structure, high work efficiency and environmental pollution prevention performance, is more particular applicable to be used in oil filed production.
Description
Technical field:
The utility model relates to a kind of commutator, particularly a kind of current commutator
Background technology:
Oilfield selective sand control tubular column structure generally is to be from bottom to top at present: tail pipe+cup packer+hydraulic anchor+oil pipe, such tubing string are in following process in well, because annular space is the cup packer sealing between oil pipe and the sleeve pipe.Liquid can only return ground by oil pipe and cause environmental pollution in the pit shaft, and efficiency is low.
Summary of the invention:
The purpose of this utility model to provide exactly a kind of simple in structure, efficiency is high, low in the pollution of the environment, can realize that sand control construction can close the current commutator between the oil jacket again.
The purpose of this utility model is achieved in that a kind of current commutator, fixedly connected for one section that it is characterized in that top connection 1 and urceolus 4, urceolus 4 the other end fixedly connected with lower contact 7, fixedly connected with central tube 2 in lower contact 7 inside, flexibly connect reversing piston 3 between urceolus 4 and the central tube 2, near hole 6 outside having on the lower contact 7 one end urceolus 4, endoporus 5 is arranged on the central tube 2, the distance between outer hole 6 and the endoporus 5 is greater than the thickness of reversing piston 3.
An optimum implementation of the present utility model is: the length of central tube 2 is 2/3 of urceolus 4.
The utility model compared with prior art has following advantage:
Owing to adopted one section of top connection 1 and urceolus 4 to fixedly connected, urceolus 4 the other end fixedly connected with lower contact 7, fixedly connected with central tube 2 in lower contact 7 inside, flexibly connect reversing piston 3 between urceolus 4 and the central tube 2, hole 6 outside on close lower contact 7 one end urceolus 4, having, endoporus 5 is arranged on the central tube 2, distance between outer hole 6 and the endoporus 5 is greater than the form of structure of the thickness of reversing piston 3, simple in structure, efficiency is high, low in the pollution of the environment, can realize that sand control construction can close between the oil jacket again.
Description of drawings:
Figure is the utility model structural representation:
1, top connection 2, central tube 3, reversing piston 4, urceolus 5, endoporus 6, outer hole 7, lower contact
The specific embodiment:
Fixedly connected for one section of top connection (1) and urceolus (4), urceolus (4) the other end fixedly connected with lower contact (7), lower contact (7) is inner fixedlys connected with central tube (2), flexibly connect reversing piston (3) between urceolus (4) and the central tube (2), hole (6) outside on close lower contact (7) one end urceolus (4), having, endoporus (5) is arranged on the central tube (2), distance between outer hole (6) and the endoporus (5) is greater than the thickness of reversing piston (3), and the length of central tube (2) is 2/3 of urceolus (4).
During use, when the down cup packer, current commutator reversing piston (3) is in the A position, and outer like this hole (6) and endoporus (5) are interconnected, and realizes that oil jacket is communicated with, under the postpone that puts in place in oil pipe, beat hydraulic pressure, the dependence effect of damming produces pressure reduction and shifts reversing piston (3) onto the B position, and outer hole (6) and endoporus (5) lose connection, have sealed the oil jacket annular distance, the liquid that enters from oil pipe enters the bottom oil reservoir, realizes the purpose of selective sand control bottom oil reservoir.Can adopt the anti-flushing well measure that reversing piston is got back to position A if pathway closure in the process of down cup packer, occurs, keep passage unimpeded.
Claims (2)
1. current commutator, fixedly connected for one section that it is characterized in that top connection (1) and urceolus (4), urceolus (4) the other end fixedly connected with lower contact (7), lower contact (7) is inner fixedlys connected with central tube (2), flexibly connect reversing piston (3) between urceolus (4) and the central tube (2), near hole (6) outside having on lower contact (7) the one end urceolus (4), endoporus (5) is arranged on the central tube (2), the distance between outer hole (6) and the endoporus (5) is greater than the thickness of reversing piston (3).
2. current commutator according to claim 1, the length that it is characterized in that described central tube (2) are 2/3 of urceolus (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200280633U CN201078217Y (en) | 2007-09-13 | 2007-09-13 | Stream commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200280633U CN201078217Y (en) | 2007-09-13 | 2007-09-13 | Stream commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078217Y true CN201078217Y (en) | 2008-06-25 |
Family
ID=39570279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200280633U Expired - Fee Related CN201078217Y (en) | 2007-09-13 | 2007-09-13 | Stream commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078217Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703212A (en) * | 2011-07-26 | 2014-04-02 | 雪佛龙美国公司 | Pipe-in-pipe apparatus, and methods and systems |
| CN108798563A (en) * | 2018-05-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | Fluid-power motor and its anti-block apparatus |
-
2007
- 2007-09-13 CN CNU2007200280633U patent/CN201078217Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703212A (en) * | 2011-07-26 | 2014-04-02 | 雪佛龙美国公司 | Pipe-in-pipe apparatus, and methods and systems |
| CN108798563A (en) * | 2018-05-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | Fluid-power motor and its anti-block apparatus |
| CN108798563B (en) * | 2018-05-28 | 2020-12-04 | 中石化石油工程技术服务有限公司 | Hydraulic motor and its anti-blocking device |
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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: 20080625 Termination date: 20140913 |
|
| EXPY | Termination of patent right or utility model |