CN202031496U - Rigid centralizer for oil tube - Google Patents
Rigid centralizer for oil tube Download PDFInfo
- Publication number
- CN202031496U CN202031496U CN2011201251742U CN201120125174U CN202031496U CN 202031496 U CN202031496 U CN 202031496U CN 2011201251742 U CN2011201251742 U CN 2011201251742U CN 201120125174 U CN201120125174 U CN 201120125174U CN 202031496 U CN202031496 U CN 202031496U
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- centralizer
- righting
- centralizer body
- utility
- model
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Abstract
The utility model discloses a rigid centralizer for an oil tube, comprising a centralizer body and centralizing strips arranged on the centralizer body. The centralizing strips are in straight line shapes and are uniformly arranged at the two ends of the centralizer body. By adopting the rigid centralizer for the oil tube, oil can pass through by needing flow guiding liquid only once, generated resistance is little, upward component force can not be generated during use so that shackle torque can not be generated, and in addition, due to the structure of the rigid centralizer per se, resistance generated during liquid circulation and lifting and putting down a tubular column is little.
Description
Technical field
The utility model relates to oil pipe erection device in a kind of oilfield downhole operation construction, relates in particular to a kind of oil pipe rigidity centralizer, is mainly used in non-rotary tool pipe string and sets upright.
Background technology
In the prior art, what the oil pipe erection device mainly adopted in the oilfield downhole operation construction is rigidity spiral centralizer.For example, a kind of centralizer is disclosed in China Patent No. " 20,092,008,065 1.0 ", comprise centralizer body and righting strip and guiding gutter, one of centralizer body is that female joint, other end are male joints, righting strip shape is in the shape of a spiral arranged, and righting strip is provided with circular groove, also is provided with steel ball in the circular groove; Guiding gutter and righting strip are spaced, also shape in the shape of a spiral.
But in actual applications, mainly also there is following deficiency in rigidity spiral centralizer: one, rigidity spiral centralizer trips out or the fashionable down effect owing to frictional force at tubing string, can produce turning moment to tubing string, easily cause the connecting thread between the tubing string loosening, and cause the tubing string well accident that falls.Two, when liquid passed through rigidity spiral centralizer, liquid not only will also must increase the resistance to liquid flow in the angle that rotates in a circumferential direction in axial flow.Three, thereby rigidity spiral centralizer can produce circumferential component and can not produce the shackle moment of torsion.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing rigidity spiral centralizer exists, a kind of oil pipe rigidity centralizer is provided, the utility model only needs a water conservancy diversion liquid to pass through, the resistance that produces is little, thereby the component that in use can not produce upwards can not produce the shackle moment of torsion, and because the structure of itself makes at the liquid circulation time and when playing lower tubular column resistance little.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of oil pipe rigidity centralizer comprises centralizer body and the righting strip that is arranged on the centralizer body, and it is characterized in that: described righting strip is type linearly, and evenly is arranged on the centralizer body two ends.
The righting strip of a described end is on centralizer body relative between adjacent two righting strips with the other end.
The righting strip of a described end is on the relative centralizer body of the mid point between adjacent two righting strips with the other end.
Spacing between adjacent two righting strips of described each end is identical.
The righting strip at described two ends is six.
Adopt advantage of the present utility model to be:
One, in the utility model, because righting strip belongs to linear, thereby can not produce the shackle moment of torsion so in use there is to produce component upwards, and because the structure of itself makes at the liquid circulation time and have advantages such as resistance is little when playing lower tubular column.
Two, in the utility model, the righting strip of an end can not produce shackle moment on centralizer body relative between adjacent two righting strips with the other end, and less to the circulation resistance of liquid in the annular space, is mainly used in non-rotary tool pipe string and sets upright.
Three, in the utility model, the righting strip of an end on the relative centralizer body of the mid point between adjacent two righting strips with the other end, thereby guaranteed that further not producing circumferential component can not produce the shackle moment of torsion after adopting this structure.
Four, in the utility model, the spacing between adjacent two righting strips of each end is identical, and the righting strip at two ends is six, because six wiper block cross-distribution at centralizer two ends have guaranteed 360 ° setting upright.
Description of drawings
Fig. 1 is the fluid passage structural representation behind employing the utility model
Fig. 2 is the utility model cross-sectional view
Be labeled as among the figure: 1, centralizer body, 2, righting strip, 3, fluid passage.
The specific embodiment
A kind of oil pipe rigidity centralizer comprises centralizer body and the righting strip that is arranged on the centralizer body, and described righting strip is type linearly, and evenly is arranged on the centralizer body two ends.
Preferred implementation of the present utility model is that the righting strip of a described end is on centralizer body relative between adjacent two righting strips with the other end.
Further, the righting strip of a described end is on the relative centralizer body of the mid point between adjacent two righting strips with the other end.
Another preferred implementation of the present utility model is that the spacing between adjacent two righting strips of described each end is identical.In addition, the righting strip at described two ends is six.
The fluid passage that the utility model can form as shown in Figure 1.
The course of work of the present utility model is: liquid flows into from the passage that forms between adjacent two righting strips of an end, after the righting strip shunting through the other end relative with passage, from the passage outflow of these righting strip both sides.
Above-described only is preferred implementation of the present utility model.Should be understood that; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model principle; need not the technical characterictic that the process creative work just can be associated; can also make some modification and improvement; these variations obviously all should be considered as equivalent feature, still belong within the protection domain of the utility model patent.
Claims (4)
1. an oil pipe rigidity centralizer comprises centralizer body and the righting strip that is arranged on the centralizer body, and it is characterized in that: described righting strip is type linearly, and evenly is arranged on the centralizer body two ends.
2. oil pipe rigidity centralizer according to claim 1 is characterized in that: the righting strip of a described end is on centralizer body relative between adjacent two righting strips with the other end.
3. oil pipe rigidity centralizer according to claim 2 is characterized in that: the righting strip of a described end is on the relative centralizer body of the mid point between adjacent two righting strips with the other end.
4. according to claim 1,2 or 3 described oil pipe rigidity centralizers, it is characterized in that: the spacing between adjacent two righting strips of described each end is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201251742U CN202031496U (en) | 2011-04-26 | 2011-04-26 | Rigid centralizer for oil tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201251742U CN202031496U (en) | 2011-04-26 | 2011-04-26 | Rigid centralizer for oil tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031496U true CN202031496U (en) | 2011-11-09 |
Family
ID=44893798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201251742U Expired - Fee Related CN202031496U (en) | 2011-04-26 | 2011-04-26 | Rigid centralizer for oil tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031496U (en) |
-
2011
- 2011-04-26 CN CN2011201251742U patent/CN202031496U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20180426 |