CN106639989A - Spiral channel sand filtering pipe - Google Patents
Spiral channel sand filtering pipe Download PDFInfo
- Publication number
- CN106639989A CN106639989A CN201510717450.7A CN201510717450A CN106639989A CN 106639989 A CN106639989 A CN 106639989A CN 201510717450 A CN201510717450 A CN 201510717450A CN 106639989 A CN106639989 A CN 106639989A
- Authority
- CN
- China
- Prior art keywords
- hole
- pipe
- channel sand
- sand filtering
- base tube
- 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.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 26
- 238000001914 filtration Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 241000605008 Spirillum Species 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
The invention provides a spiral channel sand filtering pipe. The spiral channel sand filtering pipe comprises a multi-hole base pipe, a hollow spiral body and filtering materials. A spirally-arranged through-hole array is machined on the pipe wall of the multi-hole base pipe. The hollow spiral body is twined outside the multi-hole base pipe and fastened, a certain number of through holes are machined on one side face of the hollow spiral body, and the filtering materials are arranged in the hollow spiral body. The spiral channel sand filtering pipe is simple in structure and low in cost and can be widely applied to vertical wells, oblique wells and horizontal wells.
Description
Technical field
The present invention relates to oil exploitation down-hole sand-proof tool field, more particularly to a kind of helical flow path sand screen.
Background technology
The conventional sand screen of at present sand control is usually straight tube structure, with short production cycle easily by fluid blockage containing sand in using oilfield process.Main cause be in stratum superfine free sand easily with build up of fluid in chimney filter porch, and easily penetrate into block in filter sand material and cause to fail.Simultaneously chimney filter later stage difficult treatment in down-hole is also to perplex the subject matter of production division, and reason is that reservoir sand is easily deposited and by its locking in chimney filter periphery in production process, and its huge frictional force often results in the later stage and pulls out filter operation failure.
The content of the invention
The purpose of the present invention is the problem existed for prior art, there is provided a kind of anticlogging helical flow path sand screen.
Its technical scheme is：
A kind of helical flow path sand screen, porous base tube 1 is a tubulose steel body, its tube wall is machined with by the array of through hole 4 of helical arrangement, the array of through hole 4 around porous base tube 1 is fixedly connected with cored screw body 2, cored screw body 2 is hollow-core construction, its hollow parts filling filtering material 3, in its lower surface a number of spiral through hole 5 is arranged.
The section of the cored screw body 2 is triangular in shape or arc.Filtering material can be filter screen, metal felt, metal wool, cementing sand body etc..
The present invention using by porous base tube, cored screw body, filtering material combinative structure, it is installed in the corresponding pit shaft of oil reservoir, stratum body containing sand flow need to enter filtering material by the through hole of spirillum downside, then enter substrate tube by the through hole of porous base tube.Using conventional oil pipe or common steel tube, its tube wall is machined with by the through hole array of helical arrangement wherein porous base tube.Cored screw body is wrapped in outside porous base tube, by welding and the fastening of porous base tube.
The present invention has the advantage that compared with prior art：
1st, the present invention has very strong anti-clogging, can extend its production and application cycle；
2nd, later stage work measure of the invention is simple, and operating cost is low；
3rd, overall structure of the present invention is simple, and low cost can be widely applied to straight well, inclined shaft and horizontal well.
Description of the drawings
Fig. 1 is a kind of example structure schematic diagram of the present invention
Fig. 2 is partial enlargement structural representation as shown in Figure 1.
Specific embodiment
Refering to Fig. 1, Fig. 2, a kind of helical flow path sand screen, by porous base tube 1, cored screw body 2, filtering material 3 combinative structure.One or more cored screw body 2 is wound having outside hole base tube 1（This programme is one）, and fastened with it by welding a, the one side of cored screw body 2（Fig. 1 is shown as bottom）A number of spiral through hole 5 is machined with, its spirillum recess hollow position is provided with filtering material 3.Filtering material 3 can be filter screen, metal felt, metal wool, cementing sand body etc..
In process of production, formation fluid flows up into filtering material 3 by the through hole 5 of the bottom of cored screw body 2, is then entered inside oil pipe by base tube through hole 4.Because body containing sand flow flows from bottom to top, sand body can not be depended on or piled up in porch, reduced reservoir sand and entered the probability blocked inside filtering material 3, farthest extend the use effect duration of sand screen.
When sand screen operational failure needs to pull out filter operation, by rotating tubing string（Rotate forward）Mode acts sand screen.It is overall to be similar to big screw because o exterior is wound with spirillum.This screw effect can be greatly reduced pulls out filter mechanical load, reduces operating cost and improves job success ratio.
Claims (2)
1. a kind of helical flow path sand screen, including porous base tube（1）, it is characterized in that：The porous base tube（1）For a tubulose steel body, its tube wall is machined with by the through hole of helical arrangement（4）Array, around porous base tube（1）Through hole（4）Array is fixedly connected with cored screw body（2）, cored screw body（2）For hollow-core construction, its hollow parts filling filtering material（3）, in its lower surface, a number of spiral through hole is set（5）.
2. helical flow path sand screen according to claim 1, is characterized in that：Cored screw body（2）Section is triangular in shape or arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510717450.7A CN106639989A (en) | 2015-10-30 | 2015-10-30 | Spiral channel sand filtering pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510717450.7A CN106639989A (en) | 2015-10-30 | 2015-10-30 | Spiral channel sand filtering pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106639989A true CN106639989A (en) | 2017-05-10 |
Family
ID=58830082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510717450.7A Pending CN106639989A (en) | 2015-10-30 | 2015-10-30 | Spiral channel sand filtering pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639989A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937281A (en) * | 1974-06-27 | 1976-02-10 | Texaco Inc. | High load self-cleaning helical spring filters |
| CN2238904Y (en) * | 1995-12-07 | 1996-10-30 | 李大全 | Anti-sand screen pipe |
| CN2474720Y (en) * | 2001-02-23 | 2002-01-30 | 中国石化胜利油田有限公司采油工艺研究院 | Long life sintered metal felt sand filtering tube |
| CN2886073Y (en) * | 2005-12-26 | 2007-04-04 | 李俊华 | Spiral cylinder type trapezoidal-hole sand-screening pipe |
| CN200968210Y (en) * | 2006-10-01 | 2007-10-31 | 辽河石油勘探局 | Oil well pre-filling winding sieve tube |
| US20080217002A1 (en) * | 2007-03-07 | 2008-09-11 | Floyd Randolph Simonds | Sand control screen having a micro-perforated filtration layer |
| US20100175895A1 (en) * | 2007-06-26 | 2010-07-15 | Paul David Metcalfe | Permeability Modification |
| CN201614925U (en) * | 2010-03-24 | 2010-10-27 | 崔云虎 | Spiral-flow type automatic desilting oil extraction pipe |
| CN203347757U (en) * | 2013-07-23 | 2013-12-18 | 大庆市永晨石油科技有限公司 | High-strength self-cleaning sieve tube |
| CN205172535U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Spiral flowing channel sand screen |
-
2015
- 2015-10-30 CN CN201510717450.7A patent/CN106639989A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937281A (en) * | 1974-06-27 | 1976-02-10 | Texaco Inc. | High load self-cleaning helical spring filters |
| CN2238904Y (en) * | 1995-12-07 | 1996-10-30 | 李大全 | Anti-sand screen pipe |
| CN2474720Y (en) * | 2001-02-23 | 2002-01-30 | 中国石化胜利油田有限公司采油工艺研究院 | Long life sintered metal felt sand filtering tube |
| CN2886073Y (en) * | 2005-12-26 | 2007-04-04 | 李俊华 | Spiral cylinder type trapezoidal-hole sand-screening pipe |
| CN200968210Y (en) * | 2006-10-01 | 2007-10-31 | 辽河石油勘探局 | Oil well pre-filling winding sieve tube |
| US20080217002A1 (en) * | 2007-03-07 | 2008-09-11 | Floyd Randolph Simonds | Sand control screen having a micro-perforated filtration layer |
| US20100175895A1 (en) * | 2007-06-26 | 2010-07-15 | Paul David Metcalfe | Permeability Modification |
| CN201614925U (en) * | 2010-03-24 | 2010-10-27 | 崔云虎 | Spiral-flow type automatic desilting oil extraction pipe |
| CN203347757U (en) * | 2013-07-23 | 2013-12-18 | 大庆市永晨石油科技有限公司 | High-strength self-cleaning sieve tube |
| CN205172535U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Spiral flowing channel sand screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |