CN2430208Y - Composite sand anchor - Google Patents
Composite sand anchor Download PDFInfo
- Publication number
- CN2430208Y CN2430208Y CN 00211856 CN00211856U CN2430208Y CN 2430208 Y CN2430208 Y CN 2430208Y CN 00211856 CN00211856 CN 00211856 CN 00211856 U CN00211856 U CN 00211856U CN 2430208 Y CN2430208 Y CN 2430208Y
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- CN
- China
- Prior art keywords
- stainless steel
- utility
- model
- tube
- wire screen
- 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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Abstract
The utility model provides a composite sand anchor, which is composed of a seamless base tube overspread with oillets. The outer wall of the seamless base tube is provided with a layer of stainless steel wire screen, a net cylinder made of a stainless steel plate overspread with small holes is sheathed on the outer surface of the stainless steel wire screen, both ends of the net cylinder and the wire screen are sheathed with a clamping hoop used for fixing. The diameter of the holes on the wire screen of the utility model is 0.05 to 0.06 mm, and the diameter or the width of the holes on the net cylinder is 0.09 to 0.25 mm. The utility model has the advantages of simple structure, novel design, reasonable design, prevention of the considerably minute oil sand, high temperature resistance, high pressure endurance, corrosion resistantce, high permeability, long service life, easy installation, and convenient maintenance.
Description
The utility model belongs to sand control and filters and use device, relates in particular in a kind of sleeve pipe that is contained in oil well and prevents under the oil pipe that oil-sand from entering the interior sand anchor of pipe.
At present, oil recovery sand control employed sand anchor in oil field has plenty of and lay 1-3 layer stainless steel wire fine sand net on inside and outside tube wall, after interface welds, fills diamond dust again and form in the middle of inner and outer pipes.This kind sand anchor can filter tiny oil-sand preferably, still, the cost height, especially under the operating environment of high temperature, high pressure, its life-span is very short, the use cost height.Notification number is that the Chinese patent of CN2366553Y discloses a kind of stainless steel sand-preventing petroleum expanded metals, and this technology is that equidistant on the corrosion resistant plate of 0.5mm interleaved to have established its width be the microscler hole of 0.1-3mm, is rolled into tube again and is welded into the sand control expanded metals.This expanded metals is used to the sand control that recovers the oil, than the former intensity height, and long service life, the seepage flow better performances, still, because the width in its space can only be more than 0.1mm, so, just powerless to oil-sand less than 0.1mm.
The purpose of this utility model is to provide a kind of strainability good, can prevent the above tiny oil-sand of 0.07mm, and the intensity height, the compound sand anchor of long service life.
The utility model is achieved in that this compound sand anchor is made up of the seamless parent tube that is covered with eyelet, on the outer wall of seamless parent tube, be equipped with one deck stainless steel cloth, external surface at stainless steel cloth is with a stainless steel plate mesh tube that is covered with aperture, and the two ends of net tube are with fixing hoop.
Pitch-row on the stainless steel plate mesh tube described in the utility model is that equidistant dense is arranged, its hole shape can be circular, also can be microscler; The aperture of mesh is 0.05-0.06mm on the described stainless steel cloth, and the aperture of mesh or width are 0.09-0.25mm on the described stainless steel plate mesh tube.
The utility model composite sand anchor structure is simple, and is novel in design, reasonable, high temperature resistant, high pressure resistant, anticorrosive, the permeability height, and long service life, installation, maintenance is convenient.
The contrast accompanying drawing is further described the utility model below.
Accompanying drawing is the structural representation of the compound sand anchor of the utility model.
Can see that from accompanying drawing the compound sand anchor of the utility model is made up of the seamless parent tube 1 that is covered with eyelet, stainless steel cloth 4, stainless steel plate mesh tube 3 and clip 2, on the outer wall of seamless parent tube 1, be wrapped with one deck stainless steel cloth 4, on the external surface of stainless steel cloth 4, be with a stainless steel plate mesh tube 3 that is covered with aperture again, respectively be with a fixedly clip 2 of usefulness at the two ends of stainless steel cloth 4 and stainless steel plate mesh tube 3.Pitch-row on the stainless steel plate mesh tube 3 is that equidistant dense is arranged, its hole shape can be circular, also can be microscler, and stainless steel plate mesh tube 3 is welded after being rolled into tube by expanded metals.For preventing more tiny oil-sand, the aperture of mesh is 0.05-0.06mm on the stainless steel cloth 4 that the utility model adopted, and the aperture of mesh or width are 0.09-0.25mm on the stainless steel plate mesh tube 3 that is adopted.
Claims (3)
1. compound sand anchor, form by the seamless parent tube that is covered with eyelet, it is characterized in that being equipped with one deck stainless steel cloth on the outer wall of seamless parent tube, be with a stainless steel plate mesh tube that is covered with aperture at the external surface of stainless steel cloth, the two ends of net tube are with fixing hoop.
2. compound sand anchor according to claim 1 is characterized in that the pitch-row on the described stainless steel plate mesh tube is that equidistant dense is arranged, its hole shape can be circular or microscler.
3. compound sand anchor according to claim 1, the aperture that it is characterized in that mesh on the described stainless steel cloth is 0.05-0.06mm, the aperture of mesh or width are 0.09-0.25mm on the described stainless steel plate mesh tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00211856 CN2430208Y (en) | 2000-05-15 | 2000-05-15 | Composite sand anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00211856 CN2430208Y (en) | 2000-05-15 | 2000-05-15 | Composite sand anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2430208Y true CN2430208Y (en) | 2001-05-16 |
Family
ID=33578482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00211856 Expired - Fee Related CN2430208Y (en) | 2000-05-15 | 2000-05-15 | Composite sand anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2430208Y (en) |
-
2000
- 2000-05-15 CN CN 00211856 patent/CN2430208Y/en not_active Expired - Fee Related
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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 |