CN2254952Y - Metallic wool wriggling type sand filtration pipe - Google Patents
Metallic wool wriggling type sand filtration pipe Download PDFInfo
- Publication number
- CN2254952Y CN2254952Y CN 96210323 CN96210323U CN2254952Y CN 2254952 Y CN2254952 Y CN 2254952Y CN 96210323 CN96210323 CN 96210323 CN 96210323 U CN96210323 U CN 96210323U CN 2254952 Y CN2254952 Y CN 2254952Y
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- hole
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- sand
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- Filtration Of Liquid (AREA)
Abstract
The utility model relates to a metallic wool wriggling type sand filtration pipe with the advantages of high temperature resistance and high pressure resistance in underground in an oil field. The utility model adopts the pipe that a plurality of through holes are distributed on the wall of the pipe, and a seamless steel pipe whose both ends are provided with a screw thread is used as a base pipe (sand filtration pipe). The utility model is characterized in that each of through holes is a trapezoid hole, and the inner end and the outer end of the trapezoid hole are respectively provided with an inner multi-hole shim and an outer multi-hole shim; a metal silk wadding is clamped between two multi-hole shims, and the outer multi-hole shim is fixed on the pipe wall of the base pipe. The utility model has the advantages of reasonable and simple structure, convenient welding, high temperature resistance, high voltage resistance, convenient installation, convenient operation, no falling off, no sand inclusion, good filtration effect and long service life.
Description
The utility model relates to a kind of sand control installation that is used for the sand control technical field, particularly relates to a kind of Creepy metal wool sand filter pipe.
In the oil producing operation of oilfield exploitation, sand controlling result is bad, not only can influence the quality of crude oil, and can cause the wearing and tearing of pumping unit again, in addition, if a large amount of sands is deposited in the shaft bottom, can bring difficulty to exploitation after how amassing, perhaps cause oil well to stop production, even scrap.In order to address these problems, the oil-sand eliminator that at present more advanced sand control technique adopts, anti-sand method offers several through holes on the wall of steel pipe, fill out filter block in the through hole.A kind of is to adopt the metallurgical powder compacting sintering to become piece in pore, and another kind is to adopt metallic filter material to have being welded in the pore of metal shell.The former is owing under the variations in temperature and vapour well situation of oil well, mining depth, can make gluing glue melt, come off.And the latter is because of welding filter block in the steel pipe pore, complex process, and whether filter block has firmly to be welded on is difficult on the steel pipe check, produces rosin joint sometimes, under the high pressure effect of oil well down-hole and cause filter block to be extruded the pore phenomenon.
The purpose of this utility model provides a kind of rational in infrastructure simple, and convenient welding is firm, filtering material, difficult drop-off, burning into sand not, the Creepy metal wool sand filter pipe of high temperature resistant, high pressure.
Technical solution of the present utility model is: with the hole in echelon of the via design on the seamless steel pipe wall, in trapezoidal the inner and outer end are respectively arranged with porous gasket and outside porous gasket, and accompany metal silk floss between two porous gaskets, outer porous gasket firmly is welded on the tube wall of parent tube.Above-mentioned trapezoidal hole can be a circular port, also slotted eye.
The utility model compared with prior art, have rational in infrastructure simple, at parent tube external welding porous gasket, can conveniently check pad firmly whether, and welding procedure is firmly convenient, the filtering material difficult drop-off, adopt elastic metallic silk floss, under pressure, produce wriggling, burning into sand not, do not stop up, keep oil production, simultaneously low cost of manufacture, long service life, characteristics such as filter sand is effective.
Below in conjunction with drawings and Examples the utility model is described in further details.
Fig. 1 is the structural representation of the utility model Creepy metal wool sand filter pipe.
Fig. 2 is the sectional drawing in the trapezoidal filter sand hole of Fig. 1 A-A direction.
Among the figure, 1. internal thread, 2. parent tube is 3. gone up draw-in groove, 4. through hole, 5. lower bayonet slot, 6. external screw thread, 7. in porous gasket, 8. outer porous gasket, 9. metal silk floss, 10. in wire gauze, 11. outer wire gauzes, 12. interior steps, 13. outer steps.
As Fig. 1, shown in 2, the utility model Creepy metal wool sand filter pipe, adopt seamless steel pipe to make parent tube (2), the many through holes (4) that distribute on the tube wall are trapezoidal hole, this trapezoidal hole can be a circular port, it also can be slotted eye, the two ends of steel pipe are provided with screw thread (1,6), screw thread can all be an external screw thread, also can establish internal thread by an end, the other end is an external screw thread, it is characterized in that described through hole (4) makes greatly, in, the step-like trapezoidal hole of little three layers of hole shape, interior porous gasket (7) is arranged on the interior step (12) of trapezoidal hole, and porous gasket (7) can be welded on the interior step (12) in this, also can not weld, be placed on the interior step (12), outer porous gasket (8) setting is welded on the outer step (13) of trapezoidal hole, at two porous gaskets (7,8) accompany metal silk floss (9) between, its metal silk floss adopts elastic metallic yarn or stainless steel wire.
In addition, for the fracture of wire that prevents metal silk floss comes off, filter sand net (10) in one deck can be set between interior porous gasket (7) and metal silk floss (9), also can between porous gasket (8) and the metal silk floss (9) one deck filter sand net (11) be set again outside as required, the general coloured silk wire gauze of this filter sand net.
In the foregoing description, the internal and external threads (1,6) that the parent tube two ends are provided with makes can directly connect between the sand screen, connects back non junction boss, can reduce the resistance that sand bridge causes when carrying pipe.The setting of two ends draw-in groove (3,5) not only makes operation convenient, and the filter sand block assembly in the filter bores of can avoiding damaging when operation.
Claims (3)
1. Creepy metal wool sand filter pipe, it adopts seamless steel pipe to make parent tube, and the two ends of parent tube are provided with screw thread, be furnished with many through holes (4) on the tube wall, it is characterized in that through hole (4) is a trapezoidal hole, the inner (12) of trapezoidal hole and outer end (13) be respectively arranged with interior porous gasket (7) and outside porous gasket (8), and between two porous gaskets (7,8), accompany metal silk floss (9), outer porous gasket (8) firmly is welded on the parent tube tube wall.
2. Creepy metal wool sand filter pipe according to claim 1, it is characterized in that between interior porous gasket (7) and metal silk flosssilk wadding (9), being provided with wire gauze in one deck (10), or be provided with the outer wire gauze (11) of one deck outside between porous gasket (8) and the metal silk floss (9) again.
3. Creepy metal wool sand filter pipe according to claim 1 and 2 is characterized in that described trapezoidal hole is two extremely step-like, and trapezoidal hole can be a circular port, also can be slotted eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96210323 CN2254952Y (en) | 1996-04-15 | 1996-04-15 | Metallic wool wriggling type sand filtration pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96210323 CN2254952Y (en) | 1996-04-15 | 1996-04-15 | Metallic wool wriggling type sand filtration pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2254952Y true CN2254952Y (en) | 1997-05-28 |
Family
ID=33893653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96210323 Expired - Lifetime CN2254952Y (en) | 1996-04-15 | 1996-04-15 | Metallic wool wriggling type sand filtration pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2254952Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432370C (en) * | 2004-10-25 | 2008-11-12 | 北京海能海特石油科技发展有限公司 | Production method of sand-prevention tube and welding equipment |
| CN108952641A (en) * | 2018-07-21 | 2018-12-07 | 詹其国 | A kind of sand control filtering oil guide pipe and its working method |
-
1996
- 1996-04-15 CN CN 96210323 patent/CN2254952Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432370C (en) * | 2004-10-25 | 2008-11-12 | 北京海能海特石油科技发展有限公司 | Production method of sand-prevention tube and welding equipment |
| CN108952641A (en) * | 2018-07-21 | 2018-12-07 | 詹其国 | A kind of sand control filtering oil guide pipe and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |