CN207229074U - A kind of sand control screen - Google Patents
A kind of sand control screen Download PDFInfo
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- CN207229074U CN207229074U CN201720725827.8U CN201720725827U CN207229074U CN 207229074 U CN207229074 U CN 207229074U CN 201720725827 U CN201720725827 U CN 201720725827U CN 207229074 U CN207229074 U CN 207229074U
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- sand control
- filter layer
- base tube
- control filter
- screen
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Abstract
It the utility model is related to field of oilfield exploitation, and in particular to a kind of sand control screen.The sand control screen includes the base tube that fuel feed hole is provided with tube wall, is arranged with sand control filter layer outside the base tube, the sand control filter layer includes more than two layers filter screen, and the mesh of each filter screen, which aligns and sinters, to be integrated.Mesh, which aligns and sinters, between the multiple filtration net of sand control filter layer is integrated, this setup not only makes the oil inlet hole size uniform inside sand control filter layer, the phenomenon that the careful sand grains for causing to enter in these holes because of the scrambling and anisotropism of internal oil inlet hole effectively avoided is difficult to exclude occurs, and then avoid internal crane span structure between sand control filter layer and reservoir sand, substantially increase the anti-clogging of sand control filter layer, and each filter screen sintering is integrated, it also avoid sand control filter layer, there is a phenomenon where dislocation causes the inconsistent generation of oil inlet hole inside sand control filter layer between filter screen under the souring of crude oil.
Description
Technical field
It the utility model is related to field of oilfield exploitation, and in particular to a kind of sand control screen.
Background technology
In field of oilfield exploitation, the problem of sand production in oil is common in loose sand oil accumulation recovery process.Sand production in oil is not
Oil recovery quality can be only influenced, but also oil extraction pipeline can be blocked, influences being normally carried out for oilfield exploitation.For this problem, mesh
The sand-preventing process of preceding conventional oil well includes：Mechanical sand control, chemical sand control, composite sand prevention etc., and be intended to make in these sand-preventing process
Use sand control screen.
The structure of sand control screen generally comprises the base tube that oil inlet is provided with tube wall, and the outer sheath of base tube is equipped with sand control mistake
Filtering layer, crude oil enter back into base tube after the filtering of sand control filter layer, substantially reduce the silt content in crude oil, make oil extraction
Effectively carry out.But the sand control screen of the structure is in actual use, since sand control filter layer is generally by multiple filtration net
Composition, both ends and the base tube of multiple filtration net fix, this sand control filter layer in actual use, since screen casing generally compares
Longer, the filter screen in the middle part of screen casing occurs circumferentially displaced under the souring of crude oil, and multistorey strainer mesh is mutually staggered, and causes sand control
Oil inlet hole is inconsistent inside filter layer, is difficult to exclude into the careful sand grains in sand control filter layer, so as to cause screen sand control
Filter layer and crane span structure inside reservoir sand, screen casing permeability reduction, the phenomenon that screen casing blocks oil inlet in no normal direction base tube occur, screen casing
Performance of anti-blockage it is poor.In addition, the high easily appearance of sand control filter layer insufficient strength is damaged, under the sand control ability for causing sand control filter layer
Drop, screen casing shake out seriously.
Utility model content
The purpose of this utility model is to provide a kind of good sand control screen of performance of anti-blockage.
To achieve the above object, a kind of technical solution of sand control screen of the utility model is：Including be provided with tube wall into
The base tube of oilhole, the base tube are arranged with sand control filter layer outside, and the sand control filter layer includes more than two layers filter screen, each filtering
The mesh of net, which aligns and sinters, to be integrated.
As further improvement of the utility model：The filter screen has three layers.
As further improvement of the utility model：Wrapping wire layer is arranged with outside the sand control filter layer.
As further improvement of the utility model：The wrapping wire layer is included along the circumferentially spaced of sand control filter layer
Multiple support rods and the wrapping wire being fastened on the outside of support rod.
As further improvement of the utility model：The cross section of the wrapping wire be along screen casing radial direction from inside to outside
What is gradually broadened is trapezoidal, trapezoid wind wire make to be formed between adjacent wires circle in side opening is big, outer openings are small flow channels.
As further improvement of the utility model：It is provided between the sand control filter layer and base tube and is used to support sand control
Filter layer and then the supporting structure for increasing through-flow property between base tube and sand control filter layer.
As further improvement of the utility model：The supporting structure is flow-guiding screen.
As further improvement of the utility model：The base tube is provided outside two compression rings, and two compression rings are by institute
State flow-guiding screen, sand control filter layer, the both ends of wrapping wire layer are fixed on base tube.
As further improvement of the utility model：The both ends of the base tube are respectively arranged with base tube pin thread and base tube is female
Button.
As further improvement of the utility model：The aperture of fuel feed hole is 10.5mm on base tube, 56 holes of Kong Miwei/rice,
Axial pitch of holes is 108mm.
The beneficial effects of the utility model are：Mesh aligns and is sintered to one between the multiple filtration net of sand control filter layer
Body, this setup not only make the oil inlet hole size uniform inside sand control filter layer, effectively avoid because of internal fuel feed hole
The phenomenon that the careful sand grains that the scrambling and anisotropism of gap cause to enter in these holes is difficult to exclude occurs, and then avoids
Internal crane span structure between sand control filter layer and reservoir sand, substantially increases the anti-clogging of sand control filter layer, and each filter screen
Sintering is integrated, and it also avoid sand control filter layer, generation dislocation causes sand control to filter between filter screen under the souring of crude oil
The inconsistent phenomenon of the internal oil inlet hole of layer occurs.
Further, wrapping wire layer is set outside sand control filter layer, on the one hand wrapping wire layer further can carry out crude oil
Filter, strengthens the sand controlling result of screen casing, and on the other hand, wrapping wire layer can protect its internal sand control filter layer, avoid stream containing sand oil
Sand control filter layer is directly impacted, reduces the erosion attack of sand control filter layer.
Further, wrapping wire layer includes support rod and wrapping wire, and wrapping wire is wrapped on support rod and fixed, support rod
Not only can be fixed by the distance between adjacent wires circle, make the distance between adjacent wires circle consistent, and support rod exists
Supporting gap is formed between wrapping wire layer and sand control filter layer, a buffer gap is formed between sand control filter layer and wrapping wire layer,
For crude oil after wrapping wire layer is entered, the tiny sand grains not filtered out in crude oil is introduced into the buffer gap, is rather than directly into anti-
Sand control filter layer is blocked in the oil inlet hole of sand filter layer, and after the sand grains in buffer gap can with crude oil flowing from
Carried out in wrapping wire layer, this structure design reduces the blocking risk of sand control filter layer, improves sand control filter layer and wrapping wire
Circulation between layer.
Further, the trapezoid cross section of wrapping wire set make to be formed between adjacent wires circle in side opening is big, outer openings are small
Flow channels, the flow channels of the shape can make the sand grains inside wrapping wire layer easily go out out of wrapping wire layer, and wrapping wire
Sand grains outside layer is not easily accessed inside wrapping wire layer, and then prevents sand grains from being blocked at wrapping wire layer.
Further, supporting structure, supporting structure support base tube and sand control mistake are set between base tube and sand control filter layer
Filtering layer, adds the circulation between base tube and sand control filter layer.
Further, the aperture of fuel feed hole is 10.5mm on base tube, and 56 holes of Kong Miwei/rice, axial pitch of holes is 108mm,
The set-up mode increases the area of passage and inflow-rate of water turbine of base tube on the basis of ensureing that base tube possesses enough outer pressure resistances.
Brief description of the drawings
Fig. 1 is a kind of front view of sand control screen specific embodiment 1 of the utility model；
Fig. 2 is sand control screen left end compression ring and base tube, flow-guiding screen, sand control filter layer, the office of wrapping wire layer junction in Fig. 1
Portion's enlarged drawing；
Fig. 3 is a kind of left view of sand control screen specific embodiment 1 of the utility model；
In figure：1st, base tube；11st, base tube pin thread；12nd, base tube female thread；13rd, fuel feed hole；2nd, flow-guiding screen；3rd, sand control filter layer；
4th, wrapping wire layer；41st, support rod；42nd, wrapping wire；5th, compression ring.
Embodiment
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
A kind of specific embodiment 1 of the sand control screen of the utility model, as shown in Figure 1 to Figure 3, including base tube 1, base tube 1
Left end be equipped with base tube pin thread 11, right end is equipped with base tube female thread 12, and the tube wall of base tube 1 is equipped with fuel feed hole 13, in the present embodiment
In, base tube 1 is processed into by 2 〞 oil pipes of N80 materials through screw holding, and the aperture of fuel feed hole 13 is 10.5mm on base tube 1,
56 holes of Kong Miwei/rice, axial pitch of holes are 108mm, which possesses the basis of enough outer pressure resistances in guarantee base tube 1
On, the area of passage and inflow-rate of water turbine of increase base tube 1.
The outside of base tube 1 is arranged with flow-guiding screen 2, sand control filter layer 3 and wrapping wire layer 4 successively from inside to outside.
Flow-guiding screen 2 is formed using the braiding of 316L stainless steel wires, and silk spacing 3mm, is used to support base tube 1 and sand control filter layer 3,
Increase the circulation between base tube 1 and sand control filter layer 3.
Sand control filter layer 3 is formed by the filter screen sintering of three layers of same size, and filter screen is stainless using the high 316L of intensity
Steel material is made, and mesh aligns between filter screen.This setup of sand control filter layer 3 make inside sand control filter layer 3 into
Oilhole gap size uniform, effectively avoid because the scrambling and anisotropism of internal oil inlet hole cause enter these holes in
Careful sand grains be difficult to the phenomenon that excludes and occur, and then avoid internal crane span structure between sand control filter layer 3 and reservoir sand, carry significantly
The high anti-clogging of sand control filter layer 3.
Wrapping wire layer 4 is including circumferentially spaced multiple support rods 41 along sand control filter layer 3 and is wrapped in support
The wrapping wire 42 in the outside of rib 41, support rod 41 is parallel with the axis of screen casing, is welded and fixed between wrapping wire 42 and support rod 41,
Wrapping wire 42 is made of 316L stainless steel wires, and the cross section of wrapping wire 42 is arranged to from inside to outside gradually become along the radial direction of screen casing
Wide is trapezoidal, trapezoid wind wire 42 make adjacent wires 42 formed between enclosing in side opening is big, outer openings are small flow channels.Wrapping wire
4 one side of layer further can filter crude oil, strengthen the sand controlling result of screen casing, and on the other hand, wrapping wire layer 4 can be protected
Its internal sand control filter layer 3, avoids stream containing sand oil from directly impacting sand control filter layer 3, and the erosion for reducing sand control filter layer 3 is broken
It is bad, in addition, the trapezoid cross section of wrapping wire 42 set make adjacent wires 42 formed between enclosing in side opening is big, outer openings are small overcurrent
Passage, the flow channels of the shape can make the sand grains inside wrapping wire layer 4 easily go out out of wrapping wire layer 4, and outside wrapping wire layer 4
The sand grains in portion is not easily accessed inside wrapping wire layer 4, and then prevents sand grains from being blocked at wrapping wire layer.Moreover, wrapping wire 42 is welded on branch
Support on rib 41, support rod not only can be fixed by the distance between adjacent wires circle, makes the distance between adjacent wires circle
Unanimously, and support rod forms supporting gap between wrapping wire layer and sand control filter layer, sand control filter layer and wrapping wire layer it
Between formed a buffer gap, crude oil enter wrapping wire layer after, the tiny sand grains not filtered out in crude oil is introduced between the buffering
Gap, is rather than directly into the oil inlet hole of sand control filter layer and blocks sand control filter layer, and the sand grains in buffer gap
It can be carried out afterwards with the flowing of crude oil out of wrapping wire layer, this structure design reduces the blocking risk of sand control filter layer, carries
High circulation between sand control filter layer and wrapping wire layer.
The left and right both sides in outside of base tube 1 are respectively arranged with left and right two compression rings 5, flow-guiding screen 2, sand control filter layer 3 with
And the left and right ends of wrapping wire layer 4 are welded and fixed with left and right compression ring 5 respectively, left and right compression ring 5 again with base tube 1 be welded and fixed into
And flow-guiding screen 2, sand control filter layer 3 and wrapping wire layer 4 are fixed with base tube 1.
Support can not also be set to tie as the another embodiment of the utility model, between base tube and sand control filter layer
Structure, or supporting structure are not set to the form of flow-guiding screen, and are arranged to other supporting forms, for example, being arranged to support rod
Form, or support rim etc. is arranged at intervals on the outside tube wall of base tube.
As the another embodiment of the utility model, the support rod can not also be put down with the axis of sand control screen
OK, it is but in a certain angle with the axis of sand control screen；Alternatively, the wrapping wire layer can not also set support rod, wrapping wire is straight
Connect and be weldingly fixed on sand control filter layer.
As the another embodiment of the utility model, the fuel feed hole can not also be arranged to circular hole, but set
It is set to slot hole.
As the another embodiment of the utility model, the sand control filter layer can not also be sintered by three layer filtration net
Form, but be arranged as required to two layers, four layers or more than four layers.
As the another embodiment of the utility model, left and right compression ring can not also be welded and fixed with base tube, but
By screw etc., other types of attachment are fixed.
Claims (10)
1. a kind of sand control screen, including the base tube of fuel feed hole is provided with tube wall, it is arranged with sand control filter layer, institute outside the base tube
Stating sand control filter layer includes more than two layers filter screen, it is characterised in that：The mesh of each filter screen, which aligns and sinters, to be integrated.
2. sand control screen according to claim 1, it is characterised in that：The filter screen has three layers.
3. sand control screen according to claim 1, it is characterised in that：Wrapping wire layer is arranged with outside the sand control filter layer.
4. sand control screen according to claim 3, it is characterised in that：The wrapping wire layer includes the circumferential direction along sand control filter layer
Spaced multiple support rods and the wrapping wire being fastened on the outside of support rod.
5. sand control screen according to claim 4, it is characterised in that：The cross section of the wrapping wire is along the radial direction side of screen casing
It is trapezoidal to what is gradually broadened from inside to outside, trapezoid wind wire make to be formed between adjacent wires circle in side opening is big, outer openings are small
Flow channels.
6. sand control screen according to claim 3, it is characterised in that：Use is provided between the sand control filter layer and base tube
The supporting structure of through-flow property between support sand control filter layer and then increase base tube and sand control filter layer.
7. sand control screen according to claim 6, it is characterised in that：The supporting structure is flow-guiding screen.
8. sand control screen according to claim 7, it is characterised in that：The base tube is provided outside two compression rings, two
The both ends of the flow-guiding screen, sand control filter layer, wrapping wire layer are fixed on base tube by compression ring.
9. according to the sand control screen described in any claim in claim 1-8, it is characterised in that：The both ends of the base tube point
Base tube pin thread and base tube female thread are not provided with.
10. sand control screen according to claim 9, it is characterised in that：The aperture of fuel feed hole is 10.5mm, Kong Mi on base tube
For 56 holes/rice, axial pitch of holes is 108mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725827.8U CN207229074U (en) | 2017-06-21 | 2017-06-21 | A kind of sand control screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725827.8U CN207229074U (en) | 2017-06-21 | 2017-06-21 | A kind of sand control screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229074U true CN207229074U (en) | 2018-04-13 |
Family
ID=61852998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720725827.8U Active CN207229074U (en) | 2017-06-21 | 2017-06-21 | A kind of sand control screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229074U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973056A (en) * | 2019-04-28 | 2019-07-05 | 朔创(厦门)科技有限公司 | A kind of wire-wrapped screen and wire-wrapped screen molding machine |
| CN115012884A (en) * | 2022-06-09 | 2022-09-06 | 中科泰成石油科技(海南)有限公司 | Multi-stage sand-proof screen pipe |
| CN116641693A (en) * | 2023-07-27 | 2023-08-25 | 山东石油化工学院 | Sand filtering device |
-
2017
- 2017-06-21 CN CN201720725827.8U patent/CN207229074U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973056A (en) * | 2019-04-28 | 2019-07-05 | 朔创(厦门)科技有限公司 | A kind of wire-wrapped screen and wire-wrapped screen molding machine |
| CN109973056B (en) * | 2019-04-28 | 2024-04-09 | 朔创(厦门)科技有限公司 | Wire-wrapped screen pipe and wire-wrapped screen pipe forming device |
| CN115012884A (en) * | 2022-06-09 | 2022-09-06 | 中科泰成石油科技(海南)有限公司 | Multi-stage sand-proof screen pipe |
| CN116641693A (en) * | 2023-07-27 | 2023-08-25 | 山东石油化工学院 | Sand filtering device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |