CN201851097U - Self-cleaning sand control sieve tube - Google Patents
Self-cleaning sand control sieve tube Download PDFInfo
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- CN201851097U CN201851097U CN2010206099910U CN201020609991U CN201851097U CN 201851097 U CN201851097 U CN 201851097U CN 2010206099910 U CN2010206099910 U CN 2010206099910U CN 201020609991 U CN201020609991 U CN 201020609991U CN 201851097 U CN201851097 U CN 201851097U
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- elastic steel
- lautertuns
- steel sheet
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- parent tube
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Abstract
The utility model provides a self-cleaning sand control sieve tube which consists of a base tube and a plurality of filter assemblies. Each filter assembly consists of a frame and a plurality of elastic steel sheets with different rigidities. The frame consists of a bottom plate and wing plates connected to the two sides of the bottom plate. The cross section of the frame is U-shaped, and overflowing holes are arranged on the bottom plate of the frame. The elastic steel sheets are of the same shape and are of a trapezoid with a long outer edge and a short inner edge, the front surface of the elastic steel sheet is an oblique surface, and the back surface is a straight surface. Support points projecting forward are arranged at the two ends and in the middle of each elastic steel sheet. The elastic steel sheets are distributed in the frame in parallel, and adjacent elastic steel sheets are supported by the projecting support points, so that a V-shaped overflowing channel with a big inner opening and a small outer opening is formed. Trapezoidal filter grooves are arranged on the outer wall of the base tube along the axial direction, and the filter assemblies are embedded in the filter grooves. The product adopts a completely new design concept and has the advantages of high precision, high finish, high elasticity, high strength, no blockage, self cleaning and high filter efficiency.
Description
Technical field
The utility model belongs to the petroleum production engineering technical field, relates to the sand prevention filter sand instrument in the production of hydrocarbons well, particularly the sand prevention screen casing.
Background technology
The sand prevention screen casing is a kind of oil well sand prevention instrument, mainly contain wire-wrapped screen, laser slotted screen pipe, the metal ring slit screen pipes by using, the each have their own advantage of screen casing that these rely on the slit to filter, but they have a common shortcoming: be exactly the blockage problem that all can not solve the filter seam effectively, because the slit design theory of these screen casings all is wide outside and narrow inside, the slit of outside broad easily forms bigger husky bridge, finally oil inlet passage is stopped up, lose sand prevention filter sand function, life cycle is short, the cost of winning height, therefore, be badly in need of a kind of filter efficiency height of research and development, do not have and stop up, sand prevention filter sand screen casing with self-cleaning function is to satisfy the needs that oil gas field is produced.
The utility model content
In order to address the above problem, the purpose of this utility model provides a kind of self-cleaning sand prevention screen casing of washing, and adopts brand-new design idea, has high accuracy, best bright finish, high resiliency, high strength, no obstruction, automatically cleaning, the logical high advantage of efficient of filter.
For achieving the above object, the utility model is by the following technical solutions:
A kind of self-cleaning sand prevention screen casing of washing, constitute by parent tube and a plurality of filter assemblies, it is characterized in that: each filter assemblies is made up of the elastic steel sheet of framework and a plurality of different rigidities, framework is made of base plate and the wing plate that is connected the base plate both sides, the cross section of framework is a U-shaped, have flowing hole on the base plate of framework, the shape of described each elastic steel sheet is identical, all be that outer edge is long, the trapezoidal shape that the inside edge is short, the front of each elastic steel sheet is the inclined-plane, the back side is for facing directly, the two ends of each elastic steel sheet and the middle fulcrum of projection forward that is provided with, these elastic steel sheets are arranged in parallel within inside of frame, fulcrum by described projection between the adjacent elastic steel sheet supports, thereby it is big to form inside opening, the V-arrangement flow channels that outside opening is little in axial direction has trapezoidal lautertuns on the outer wall of described parent tube, described filter assemblies is inlaid in these lautertuns.
Described lautertuns has many rows, and every row's lautertuns hoop is distributed on the outer wall of parent tube, and the position of adjacent two row's lautertuns is staggered.
Described lautertuns has many rows, and every row's lautertuns hoop is distributed on the outer wall of parent tube, and the position of adjacent two row's lautertuns aligns.
The two ends of described parent tube are provided with the screw thread screw thread.
The utility model has following positive beneficial effect:
Screen casing of the present utility model is made of parent tube and filter assemblies, and the flow channels of filter assemblies is the V-arrangement slit of outer narrow inner width, can the grains of sand more than the 40 μ m be blocked in outside the flow channels, and precision can reach 10 μ m.Because elastic steel sheet is made up of the elastic steel sheet of different rigidity, the pressure differential difference that when the oil well pump of oil well is up and down reciprocatingly twitched, produces inside and outside the screen casing, make elastic steel sheet that the relative elasticity changing of the relative positions take place, covering the grains of sand that hang over flow channels slit aperture place comes off automatically, reach the inside and outside self-cleaning purpose in slit, thereby finish the stifled self-cleaning function of nothing truly.Improve the production cycle of individual well effectively, reduced cost of winning, realized producing long-term effectively, solved a great problem that stops up well workover for many years because of screen casing.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is the structural representation of parent tube among Fig. 2.
Fig. 4 is the elevation of Fig. 1.
Fig. 5 is the A-A sectional view of Fig. 4.
Fig. 6 is the B-B cutaway view Amplified image of Fig. 4.
Fig. 7 is the structural representation of filter assemblies.
Fig. 8 is the exploded view of Fig. 7.
Fig. 9 is the structural representation of framework.
Figure 10 is the vertical view of Fig. 9.
Figure 11 is the rear elevation of Fig. 7.
Figure 12 is the exploded view of Figure 11.
Figure 13 is the upward view of Figure 11.
Figure 14 is the vertical view of Figure 11.
Figure 15 is the structural representation of the utility model embodiment two.
Figure 16 is the elevation of Figure 15.
Figure 17 is the exploded view of Figure 15.
Figure 18 is the structural representation of parent tube among Figure 17.
Figure 19 is the C-C sectional view of Figure 16.
Figure 20 is the structural representation of parent tube among Figure 19.
The specific embodiment
Number in the figure
1 parent tube, 2 filter assemblies, 3 frameworks, 4 elastic steel sheets
5 base plates, 6 wing plates, 7 wing plates, 8 flowing holes
10 back sides, 9 fronts, 11 fulcrums, 12 fulcrums
13 fulcrums, 14 inside openings, 15 outside openings
16 lautertuns, 17 screw thread screw threads, 18 screw thread screw threads
Embodiment one
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the utility model is a kind of self-cleaning sand prevention screen casing of washing, and is made of parent tube 1 and a plurality of filter assemblies 2.
Please refer to Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, each filter assemblies 2 is made up of the elastic steel sheet 4 of framework 3 and a plurality of different rigidities, framework 3 is by base plate 5 and the wing plate 6 that is connected base plate 5 both sides, 7 constitute as Fig. 9, shown in Figure 10, the cross section of framework 3 is a U-shaped, have flowing hole 8 as shown in figure 10 on the base plate 5 of framework 3, the shape of each elastic steel sheet 4 is identical, each elastic steel sheet 4 is long for outer edge, the trapezoidal shape that the inside edge is short, the front 9 of elastic steel sheet 4 be the inclined-plane as shown in Figure 8, the back side 10 of elastic steel sheet 4 is for facing directly as shown in figure 12, the two ends of each elastic steel sheet 4 and the middle fulcrum 11 of projection forward that is provided with, 12,13 as shown in Figure 8, these elastic steel sheets 4 are arranged in parallel within the inside of framework 3, between the adjacent elastic steel sheet 4 by the fulcrum 11 of projection, 12,13 support, thereby it is big to form inside opening 14, the V-arrangement flow channels that outside opening 15 is little, that is to say, flow channels is the slit of outer narrow inner width, can the grains of sand more than the 40 μ m be blocked in outside the flow channels, precision can reach 10 μ m.
In axial direction have trapezoidal lautertuns 16 on the outer wall of parent tube 1, being inlaid in these lautertuns 16 of filter assemblies 2 one, a correspondence.The two ends of filter assemblies 2 are fixed by welding on the lautertuns 16.
In the present embodiment, lautertuns 16 has many rows, and every row's lautertuns 16 hoops are distributed on the outer wall of parent tube 1, and the position of adjacent two row's lautertuns 16 is staggered.
The two ends of parent tube 1 are provided with screw thread screw thread 17,18, and screw thread screw thread 17,18 is used for linking to each other with box cupling, thereby each parent tube 1 is coupled together.
Because elastic steel sheet 4 is made up of the elastic steel sheet of different rigidity, the pressure differential difference that when the oil well pump of oil well is up and down reciprocatingly twitched, produces inside and outside the screen casing, make elastic steel sheet 4 that the relative elasticity changing of the relative positions take place, cover the grains of sand that hang over flow channels slit aperture place and come off automatically, reach the inside and outside self-cleaning purpose in slit.Thereby finish the stifled self-cleaning function of nothing truly.Improve the production cycle of individual well effectively, reduced cost of winning, realized producing long-term effectively, solved a great problem that stops up well workover for many years because of screen casing.
Embodiment two
Please refer to Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, the utility model is a kind of self-cleaning sand prevention screen casing of washing, and is made of parent tube 1 and a plurality of filter assemblies 2.The structure of filter assemblies 2 is same as the previously described embodiments.
In axial direction have trapezoidal lautertuns 16 on the outer wall of parent tube 1, being inlaid in these lautertuns 16 of filter assemblies 2 one, a correspondence.The two ends of filter assemblies 2 are fixed by welding on the lautertuns 16.
In the present embodiment, lautertuns 16 has many rows, and every row's lautertuns 16 hoops are distributed on the outer wall of parent tube 1, and the position of adjacent two row's lautertuns 16 aligns.
Claims (4)
1. self-cleaning sand prevention screen casing of washing, constitute by parent tube and a plurality of filter assemblies, it is characterized in that: each filter assemblies is made up of the elastic steel sheet of framework and a plurality of different rigidities, framework is made of base plate and the wing plate that is connected the base plate both sides, the cross section of framework is a U-shaped, have flowing hole on the base plate of framework, the shape of described each elastic steel sheet is identical, all be that outer edge is long, the trapezoidal shape that the inside edge is short, the front of each elastic steel sheet is the inclined-plane, the back side is for facing directly, the two ends of each elastic steel sheet and the middle fulcrum of projection forward that is provided with, these elastic steel sheets are arranged in parallel within inside of frame, fulcrum by described projection between the adjacent elastic steel sheet supports, thereby it is big to form inside opening, the V-arrangement flow channels that outside opening is little in axial direction has trapezoidal lautertuns on the outer wall of described parent tube, described filter assemblies is inlaid in these lautertuns.
2. the self-cleaning sand prevention screen casing of washing as claimed in claim 1 is characterized in that: described lautertuns has many rows, and every row's lautertuns hoop is distributed on the outer wall of parent tube, and the position of adjacent two row's lautertuns is staggered.
3. the self-cleaning sand prevention screen casing of washing as claimed in claim 1 is characterized in that: described lautertuns has many rows, and every row's lautertuns hoop is distributed on the outer wall of parent tube, and the position of adjacent two row's lautertuns aligns.
4. the self-cleaning sand prevention screen casing of washing as claimed in claim 1, it is characterized in that: the two ends of described parent tube are provided with the screw thread screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206099910U CN201851097U (en) | 2010-11-16 | 2010-11-16 | Self-cleaning sand control sieve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206099910U CN201851097U (en) | 2010-11-16 | 2010-11-16 | Self-cleaning sand control sieve tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851097U true CN201851097U (en) | 2011-06-01 |
Family
ID=44093496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206099910U Expired - Fee Related CN201851097U (en) | 2010-11-16 | 2010-11-16 | Self-cleaning sand control sieve tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851097U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240895A (en) * | 2011-07-01 | 2011-11-16 | 浙江省星炬科技有限公司 | Production method of anti-sand sieve tube |
| CN102261237A (en) * | 2011-08-12 | 2011-11-30 | 成都理工大学 | Dislocated circular seam self-cleaning sand control sieve tube |
| CN114183096A (en) * | 2021-12-09 | 2022-03-15 | 中国矿业大学(北京) | Self-rotating self-cleaning coal bed gas well screen pipe |
-
2010
- 2010-11-16 CN CN2010206099910U patent/CN201851097U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240895A (en) * | 2011-07-01 | 2011-11-16 | 浙江省星炬科技有限公司 | Production method of anti-sand sieve tube |
| CN102240895B (en) * | 2011-07-01 | 2013-01-30 | 浙江省星炬科技有限公司 | Production method of anti-sand sieve tube |
| CN102261237A (en) * | 2011-08-12 | 2011-11-30 | 成都理工大学 | Dislocated circular seam self-cleaning sand control sieve tube |
| CN102261237B (en) * | 2011-08-12 | 2016-05-04 | 成都理工大学 | A kind of dislocated circular seam self-cleaning sand control sieve tube |
| CN114183096A (en) * | 2021-12-09 | 2022-03-15 | 中国矿业大学(北京) | Self-rotating self-cleaning coal bed gas well screen pipe |
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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: 20110601 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |