CN2509320Y - Special sand filter - Google Patents
Special sand filter Download PDFInfo
- Publication number
- CN2509320Y CN2509320Y CN 01250441 CN01250441U CN2509320Y CN 2509320 Y CN2509320 Y CN 2509320Y CN 01250441 CN01250441 CN 01250441 CN 01250441 U CN01250441 U CN 01250441U CN 2509320 Y CN2509320 Y CN 2509320Y
- Authority
- CN
- China
- Prior art keywords
- tube
- wells
- periphery
- parent tube
- wire cloth
- 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
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- Revetment (AREA)
Abstract
The utility model relates to an oil sand filter, which adopts that the outer of the central parent tube with a plurality of through holes has a steel wire netting; the outer of the steel wire netting has a stainless steel tube mat netting; the outer of the stainless steel tube mat netting has filling; the outer of the filling has steel wire netting whose outer has a protection tube with a through hole; the two ends of the protection tube is welded to the central parent tube; and the two ends of the central parent tube has a connection worm. The device has advantages that: bending resistance is large; has a fixed aperture; strong in elasticity; large in pressure difference resistance; well in scouring resistance; and long in service life; moreover, the utility model is suitable to prevent sand in offshore big slope wells and oil wells as well as straight wells, thermal production wells and old wells.
Description
The utility model relates to a kind of sand-preventing petroleum pipe, particularly a kind of special sand screen.
The sand screen of various ways is arranged at sand control tube side mask at present, and its existing problems are sand screen sand control narrow range of various mechanical types, and a kind of sand control can only be prevented the sandstone in 1～2 kind of sand footpath, and giving recovers the oil produces makes troubles and difficulty.For addressing this problem, the utility model has designed a kind of special sand screen, and it is big to make it to have the sand control scope, has solved the anti-fine sand siltstone problem of high angle hole, owing to adopt sand control medium overall package new technology, has the advantage in counter-bending big and constant aperture.
The utility model is achieved in that special sand screen is to adopt to have gauze wire cloth in the center parent tube periphery that is drilled with a plurality of through holes; the rust steel pipe seat shape net that has 1Cr18Mn9T in the periphery of gauze wire cloth; it is thin to be woven to warp heavy filling/pick line; increased the intensity of sand control medium; guaranteed the reliability of sand control simultaneously; periphery at stainless steel seat shape net has filler; filler is charges; periphery at filler has gauze wire cloth; the protection tube that has the band through hole in the periphery of gauze wire cloth; the protection tube two ends are welded on the parent tube of center by junction plate, have connecting thread at the two ends of center parent tube.
The utility model compared with prior art has counter-bending big and constant aperture, and elasticity is strong, and withstand voltage difference is big, and abrasion resistance can be good, and the advantage of long service life adopts stainless steel wire simultaneously, not only has sand control capability but also has the sediment outflow function.Be applicable to marine big inclined shaft oil well and gas well sand control, also be applicable to the sand control of straight well, thermal production well, OW.
Concrete structure of the present utility model and embodiment are provided by the following drawings.
What accompanying drawing provided is general structure schematic diagram of the present utility model.
Below in conjunction with accompanying drawing concrete structure of the present utility model and embodiment are described further.
Embodiment
See shown in the accompanying drawing: special sand screen is to adopt to bore φ 10mm hole on center parent tube 6; having every meter slotted hole number is about 248; has gauze wire cloth 5 in center parent tube 6 peripheries; at gauze wire cloth 5 eyelets 4 * 4mm; tightly be centered around center parent tube 6 skins; forward spot welding is firm with spot welder; the rust steel pipe seat shape net 4 that has 1Cr18Mn9T in the periphery of gauze wire cloth 5; 60～400 orders; tightly be centered around the skin of gauze wire cloth 5; forward spot welding is firm with spot welder, has filler 3 in the periphery of stainless steel seat shape net 4, and filler 3 is charges; periphery at filler 3 has gauze wire cloth 2; 2 * 2mm, 10 orders tightly are centered around the skin of filler 3; forward spot welding is firm with spot welder; periphery at gauze wire cloth 2 has the protection tube 1 of being with through hole, and protection tube 1 two ends are welded on the center parent tube 6 by junction plate, have connecting thread 7 at the two ends of center parent tube 6.
Claims (1)
1, a kind of special sand screen; it is characterized in that: have gauze wire cloth (5) in center parent tube (6) outside that is drilled with a plurality of through holes; the rust steel pipe seat shape net (4) that has 1Cr18Mn9T in the periphery of gauze wire cloth (5); periphery at stainless steel seat shape net (4) has filler (3); periphery at filler (3) has gauze wire cloth (2); the protection tube (1) that has the band through hole in the periphery of gauze wire cloth (2); protection tube (1) two ends are welded on the center parent tube (6) by junction plate, have connecting thread (7) at the two ends of center parent tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01250441 CN2509320Y (en) | 2001-08-22 | 2001-08-22 | Special sand filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01250441 CN2509320Y (en) | 2001-08-22 | 2001-08-22 | Special sand filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509320Y true CN2509320Y (en) | 2002-09-04 |
Family
ID=33660597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01250441 Expired - Fee Related CN2509320Y (en) | 2001-08-22 | 2001-08-22 | Special sand filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509320Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295868A (en) * | 2019-07-16 | 2019-10-01 | 邓福成 | Combined expanded screen casing |
-
2001
- 2001-08-22 CN CN 01250441 patent/CN2509320Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295868A (en) * | 2019-07-16 | 2019-10-01 | 邓福成 | Combined expanded screen casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |