CN2535556Y - Double-layer laser kerf sand-proof tube for oil-well in oil-field - Google Patents
Double-layer laser kerf sand-proof tube for oil-well in oil-field Download PDFInfo
- Publication number
- CN2535556Y CN2535556Y CN 01267061 CN01267061U CN2535556Y CN 2535556 Y CN2535556 Y CN 2535556Y CN 01267061 CN01267061 CN 01267061 CN 01267061 U CN01267061 U CN 01267061U CN 2535556 Y CN2535556 Y CN 2535556Y
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- China
- Prior art keywords
- oil
- double
- sand
- pipe
- sandpipe
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- Expired - Fee Related
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Abstract
The utility model discloses an oil field oil well double-layer laser kerfing sand control pipe for oil field oil wells, which comprises an inner pipe, an outer pipe, an upper connector and a lower connector. The upper connector and the lower connector are connected with both ends of the outer pipe via trapezoidal threads with sealing rings at the mounting positions. The upper end of the inner pipe is assembled on the upper connector via trapezoidal threads, the outer pipe and the inner pipe are provided with tens of narrow slits, and sand retention material is filled between the inner pipe and the outer pipe. The utility model has the advantages of small diameter, high strength, good sand control effect, convenient utilization, and wide application range, which can effectively increase the production period of oil wells.
Description
Technical field
The utility model relates to the anti-sandpipe that a kind of oilfield is used.
Background technology
Sand well is in recovery process, and ubiquity the serious and sand of component wear and buried the oil reservoir situation, causes the oil well production life-span short, has increased oil field well workover and operating cost, causes the increase of oilfield exploitation cost.At present the sand control tubing string has prolonged oil well repair free period to a certain degree having got the sand block effect, but since himself structures shape its application limitation.Wire-wrapped screen caliber in the sand control tubing string is big, and construction is complicated.Epoxy resin sand screen caliber is big, intensity is low, it is little to adapt to the sand control scope.
The utility model content
At the problems referred to above that present sand control pipe exists, the purpose of this utility model is to provide the double-deck laser slotted of a kind of oilfield anti-sandpipe, and this anti-sandpipe caliber is little, and sand controlling result is good, and the intensity height is easy to use.
In order to achieve the above object, the utility model adopts following solution: the anti-sandpipe of the double-deck laser slotted of oilfield is made up of top sub, bottom joint, outer tube and interior pipe, outer tube adopts plain tubing, interior pipe is the thin layer steel pipe, top sub, bottom joint and outer effective acme thread are assembled into one, and interior pipe is fixed on the top sub by trapezoidal thread, and the lower end is inserted in the endoporus of bottom joint, be filled with filler between interior pipe and outer tube, sealing ring be housed in assembling place.Tens of the slits that useful laser cuts out on interior pipe and outer tube.
The filler of filling can be spherical filter sand material between above-mentioned interior pipe and outer tube.
Can have the symmetric windows of being convenient to instrument assembling usefulness on the outer wall of top sub and bottom joint.
During use the anti-sandpipe of the double-deck laser slotted of oilfield of the present utility model is connected in the oil pipe lower end of oil well oil-pumping pump intake, with plug the double-deck laser slotted of oilfield is prevented that the sandpipe lower end blocks and get final product.Because the outer tube of the anti-sandpipe of the double-deck laser slotted of whole oil filed oil well is a plain tubing, should prevent that the sandpipe diameter is little, can satisfy small casing well and exceptional well requirement.Should connect by interior linking by anti-sandpipe simultaneously, kept the flatness of tubing string integral body, transfer and on carry conveniently, easily handle.Since by slit on the inner and outer pipes and the middle common filter sand of sand prevention material of filling, so sand controlling result is good, and pipe intensity height.The anti-sandpipe scope of application of the double-deck laser slotted of this oilfield is more extensive, can effectively prolong the oil well production cycle.
Description of drawings
Fig. 1 is the structure chart of the anti-sandpipe of the double-deck laser slotted of oilfield;
Fig. 2 is the mode of occupation schematic diagram of the anti-sandpipe of the double-deck laser slotted of oilfield.
The specific embodiment
Below in conjunction with accompanying drawing the anti-sandpipe of the double-deck laser slotted of oilfield of the present utility model is described further.
As shown in Figure 1, the anti-sandpipe of the double-deck laser slotted of oilfield comprises the interior pipe 2 of outer tube 1, thin layer steel pipe, top sub 3 and the bottom joint 4 that plain tubing is made.Outer tube 1 two ends link together by trapezoidal thread and top sub 3 and bottom joint 4, and the sealing ring (not shown) is equipped with in assembling place.In pipe 2 be assembled on the top sub 3 by acme thread, the lower end is inserted in the endoporus of bottom joint 4 and is fixed, and is filled with sand block material 5 at interior pipe 2 and 1 of outer tube.Many the slits (omitting among the figure) that useful laser cuts out on interior pipe 2 and outer tube 1 tube wall are used as the circulation passage of crude oil and can stop the sand grains of certain diameter.Symmetry has breach (omitting among the figure) so that assemble with instrument on the outer wall of top sub 3 and bottom joint 4.
As shown in Figure 2, during use oil pipe 13 lower ends that are connected in oil pump 12 inlets in the anti-sandpipe 10 of the double-deck laser slotted of oilfield of the present utility model and the oil well 11 are connected, the double-deck laser slotted of oilfield is prevented that the endoporus of sandpipe 10 lower ends is blocked with plug 14 and is got final product.
By said structure as can be seen, the anti-sandpipe diameter of the double-deck laser slotted of this oilfield is little, the intensity height, sand controlling result is good, and can be used for small casing well and exceptional well, and is applied widely, transfer and on carry conveniently.
Claims (3)
1, the anti-sandpipe of the double-deck laser slotted of a kind of oilfield, comprise top sub, bottom joint, outer tube and interior pipe, it is characterized in that: top sub, bottom joint and outer effective acme thread are assembled into one, insert in the endoporus of top sub and bottom joint at interior pipe two ends, be filled with filler between interior pipe and outer tube, in assembling place sealing ring is housed, many slits that cut out with laser are arranged on outer tube and interior pipe.
2, the anti-sandpipe of the double-deck laser slotted of oilfield as claimed in claim 1, it is characterized in that: above-mentioned filler is spherical filter sand material.
3, the anti-sandpipe of the double-deck laser slotted of oilfield as claimed in claim 1, it is characterized in that: top sub and bottom joint respectively have the breach of two symmetries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267061 CN2535556Y (en) | 2001-11-03 | 2001-11-03 | Double-layer laser kerf sand-proof tube for oil-well in oil-field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267061 CN2535556Y (en) | 2001-11-03 | 2001-11-03 | Double-layer laser kerf sand-proof tube for oil-well in oil-field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2535556Y true CN2535556Y (en) | 2003-02-12 |
Family
ID=33673540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01267061 Expired - Fee Related CN2535556Y (en) | 2001-11-03 | 2001-11-03 | Double-layer laser kerf sand-proof tube for oil-well in oil-field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2535556Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806992A (en) * | 2016-03-17 | 2016-07-27 | 中国石油大学(北京) | Reusable three-dimensional large-size burning experiment device |
-
2001
- 2001-11-03 CN CN 01267061 patent/CN2535556Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806992A (en) * | 2016-03-17 | 2016-07-27 | 中国石油大学(北京) | Reusable three-dimensional large-size burning experiment device |
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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 |