CN202417448U - Slotted screen pipe provided with novel slit cavity - Google Patents
Slotted screen pipe provided with novel slit cavity Download PDFInfo
- Publication number
- CN202417448U CN202417448U CN2011205393831U CN201120539383U CN202417448U CN 202417448 U CN202417448 U CN 202417448U CN 2011205393831 U CN2011205393831 U CN 2011205393831U CN 201120539383 U CN201120539383 U CN 201120539383U CN 202417448 U CN202417448 U CN 202417448U
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- China
- Prior art keywords
- slotted screen
- slit
- screen pipe
- slot
- pipe
- 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.)
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Abstract
The utility model relates to a slotted screen pipe, in particular to a slotted screen pipe provided with a novel slit cavity. The technical scheme is as follows: the slotted screen pipe provided with the novel slit cavity mainly comprises a coupling, a pipe body, slits and a screw thread, wherein one end of the pipe body is connected with the coupling, the other end of the pipe body is provided with the screw thread, a plurality of groups of slits are distributed on the pipe body; on the longitudinal section, the slit at the outer part of the pipe body is longest and the slit at the inner part of the pipe body is shortest, wherein the transition part is arc-shaped; and on the cross section, the slit at the outer part of the pipe body is narrowest and the slit at the inner part of the pipe body is widest. The benefits are as follows: the advantage of the slotted screen pipe is kept while the disadvantage of the slotted screen pipe is made up, and the service life of the slotted screen pipe is greatly prolonged; the slotted screen pipe provided with the slit cavity can be widely applied to sand prevention and various thermal production wells, and is a preferred product used for replacing a precise sand filtering screen pipe.
Description
Technical field
The utility model relates to a kind of cutting seam sieve tube, particularly a kind of cutting seam sieve tube with new groove part chamber.
Background technology
At present, the cutting seam sieve tube of oil field widespread usage is all produced by laser or machining, and machining and laser slotted all exist something in common.All belong to rectangular slits, that is to say that the interior external diameter slot of sleeve pipe (oil pipe) width is consistent, and do not reach below the 0.2mm aspect wide at seam, so just be difficult to anti-ly to the following gravel of 0.15mm, and the probability of obstruction slot is very big.
Summary of the invention
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, and a kind of cutting seam sieve tube with new groove part chamber is provided.
Its technical scheme is: mainly be made up of box cupling, body, slot, screw thread; One end of described body connects box cupling; The other end is provided with screw thread, many group slots that on body, distribute, and the longitudinal section of described slot is that the outside slot length of body is the longest; The slot length of body inside is the shortest, and wherein transition position is a circular arc; The cross section of described slot is that the outside slot width of body is minimum, the slot width maximum that body is inner.
The beneficial effect of the utility model is: both continued cutting seam sieve tube and got advantage, simultaneously remedied the deficiency of cutting seam sieve tube again, and improved cutting seam sieve tube application life greatly; Can be widely used in sand control and various thermal production well, be the first-selected product that substitutes accurate sand-screen.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is A-A structure charts of the utility model;
Accompanying drawing 3 is partial enlarged drawings of the slot of the utility model;
Accompanying drawing 4 is C portion structure charts of the utility model;
Among the last figure: box cupling 1, body 2, slot 3, screw thread 4, trapezium structure 3.1, circular arc 3.2.
The specific embodiment
In conjunction with accompanying drawing 1-4, the utility model is done further to describe:
The utility model mainly is made up of box cupling 1, body 2, slot 3, screw thread 4, and an end of described body 2 connects box cupling 1, and the other end is provided with screw thread 4; Many group slots 3 distribute on body 2; Body adopts API sleeve pipe (oil pipe), and by the slot of external diameter to internal diameter cutting different in width, the longitudinal section of described slot 3 is that the outside slot length of body is the longest; The slot length of body inside is the shortest, and wherein transition position is a circular arc 3.2; The cross section of described slot 3 is that the outside slot width of body is minimum, and the slot width maximum that body is inner is a trapezium structure 3.1 with reference to accompanying drawing.
With reference to accompanying drawing 3, W is that the external diameter seam is wide, and W+X is that the internal diameter seam is wide, and X is 0.03mm-0.2mm (wide according to the various outer diameter seam, X numerical value is different).
The characteristics of the utility model are as follows:
1, self-cleaning function: owing to slot opening employing in the manufacturing process of slot pipe is the trapezium structure of inner wide and outer narrow; In actual oil recovery application process; Gravel gets into behind the slot external diameter of pipe slit not can be because of the internal diameter slit little or equally produces obstruction, has prolonged the slot pipe practicality time limit;
2, this structure can increase body intensity;
3, this structure can be avoided diminishing even direct closure because of the excessive slit of causing of external force collision differential pressure effectively; Trapezium structure can be played a supporting role, because the characteristic of the outer narrow inner width of plasma panel slot, if wait seam long; Fluid is in the pressure of seam in the chamber phenomenon that tapers off from outside to inside so; The pressure that the slot exterior angle receives is maximum, and wearing and tearing are also just the most serious, influence sand controlling result; And short this phenomenon that just do not exist in the foreign minister, the fluid pressure of short seam has effectively prolonged slot tube lifetime from basic identical to internal pressure outward in the foreign minister.
Claims (1)
1. cutting seam sieve tube with new groove part chamber; Mainly be made up of box cupling (1), body (2), slot (3), screw thread (4), an end of described body (2) connects box cupling (1), and the other end is provided with screw thread (4); Go up many group slots (3) that distribute at body (2); It is characterized in that: the longitudinal section of described slot (3) is that the outside slot length of body is the longest, and the slot length of body inside is the shortest, and wherein transition position is circular arc (3.2); The cross section of described slot (3) is that the outside slot width of body is minimum, the slot width maximum that body is inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205393831U CN202417448U (en) | 2011-12-21 | 2011-12-21 | Slotted screen pipe provided with novel slit cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205393831U CN202417448U (en) | 2011-12-21 | 2011-12-21 | Slotted screen pipe provided with novel slit cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417448U true CN202417448U (en) | 2012-09-05 |
Family
ID=46742221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205393831U Expired - Lifetime CN202417448U (en) | 2011-12-21 | 2011-12-21 | Slotted screen pipe provided with novel slit cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033135A (en) * | 2013-03-05 | 2014-09-10 | 兰州正丰石油化工技术装备有限责任公司 | High pressure natural gas well slotting jacket sand prevention pipe |
| CN106761591A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of erosion resistance sand control screen and preparation method |
-
2011
- 2011-12-21 CN CN2011205393831U patent/CN202417448U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033135A (en) * | 2013-03-05 | 2014-09-10 | 兰州正丰石油化工技术装备有限责任公司 | High pressure natural gas well slotting jacket sand prevention pipe |
| CN104033135B (en) * | 2013-03-05 | 2016-12-28 | 兰州正丰石油化工技术装备有限责任公司 | Scaled high-pressure natural gas well slot jacket sand-proof pipe |
| CN106761591A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of erosion resistance sand control screen and preparation method |
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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 |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |