CN203626634U - Casting type sucker rod centralizer - Google Patents
Casting type sucker rod centralizer Download PDFInfo
- Publication number
- CN203626634U CN203626634U CN201320669742.4U CN201320669742U CN203626634U CN 203626634 U CN203626634 U CN 203626634U CN 201320669742 U CN201320669742 U CN 201320669742U CN 203626634 U CN203626634 U CN 203626634U
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- CN
- China
- Prior art keywords
- centralizer
- abrasion
- sucker rod
- casting type
- resistant blocks
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a casting type sucker rod centralizer. The casting type sucker rod centralizer comprises a centralizer body and is characterized in that three eccentric sector abrasion-resistant blocks are arranged in the axis direction of the centralizer, the three eccentric sector abrasion-resistant blocks are sequentially staggered in the axial direction of centralizer body and are evenly arranged at 120 degrees to form original well fluid flow channels, and flow channel separations are arranged between the eccentric sector abrasion-resistant blocks. The casting type sucker rod centralizer has the advantages that the abrasion-resistant period of the outer arc contact face of the three eccentric sector abrasion-resistant blocks is long, so that damage to the inner wall of an oil pipe is reduced; the eccentric sector abrasion-resistant blocks evenly distributed at 120 degrees along the radial circumference of the centralizer are sequentially designed in a staggered mode in the axial direction, so that the flow area of the flow channels are increased, the casting type sucker rod centralizer can be widely applied to eccentric abrasion measure wells of various types of oil qualities, a centralizer end from the end point to the largest outer diameter of the eccentric sector abrasion-resistant blocks is formed by an R arc and an oblique line tangent with each other, stream line type anti-vortex and anti-choked-flow design is adopted in the two ends, and corrosion of a sucker rod body at the centralizer end is relieved or eliminated .
Description
Technical field
The utility model belongs to oil pumping rod centering device, relates in particular to a kind ofly will strengthen the nylon casting type oil pumping rod centering device of nylon injection-molding on sucker rod.
Background technology
In petroleum industry, the oil pumping rod centering device of the supporting anti-eccentric wear of pumping rod of well pumping unit has a variety of.Common nylon sucker rod clip centralizer, its fixed structure is mutually to plug together interference by upper and lower two nylon blocks to be locked on sucker rod, and the weak point of this series products is: 1. the requirement of the industry standard SY/T5832-2009 " oil pumping rod centering device " of at all do not reach>=6KN of axial locking power; 2. due to the restriction of clip centralizer structure, oil pipe area of passage does not reach industry standard SY/T5832-2009 " oil pumping rod centering device " yet and requires: oil pipe area of passage>=1100mm
2; 3. be plane because the locking mechanism of nylon clip centralizer causes the end face at two ends, when sucker rod pumps, produce corresponding eddy current and choked flow at the two ends of centralizer original well liquid (being the oil-water mixture from underground extraction), cause the sucker rod heavy corrosion at centralizer two ends, in use often cause the disconnected bar accident of sucker rod to occur; Number of patent application 200920095703.1 discloses a kind of clamp type centralizer, comprise centralizer body, centralizer body external surface is longitudinally provided with positioning supports muscle and crosses oil groove, it is characterized in that: centralizer body shape is jujube core shape, and it is 60～68 channelization angle that two ends are provided with angle.This utility model adopts upper and lower two centralizers to form one group, and every group of two centralizers are 90 ° and are fixed on sucker rod.Two centralizers are the setting of 90 ° of corners mutually, in the time that reality is used, can not play point effect to water conservancy diversion to tubing string Central Plains well liquid, and its main cause is that the narrow narrow and liquid flow of the guiding gutter that forms of two centralizers is obstructed; The channelization angle that these utility model centralizer body two ends arrange; on its end face, still remain with plane; find that in actual use fluid column is still very large to the shock loading of centralizer end face; can not alleviate or eliminate the corrosion of fluid column to the centralizer termination sucker rod body of rod completely, can not play a good protection to sucker rod.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, the nylon casting type oil pumping rod centering device of nylon injection-molding on sucker rod will be strengthened and provide a kind of, the wear-resistant cycle of the arc contact surface of three eccentric segment wear-resistant blocks is long, has weakened the damage to tube inner wall; Runner area of passage strengthens; The fusiform anti-eddy current in two ends, centralizer termination and anti-choked flow design, alleviate or the corrosion of elimination original well liquid post to the centralizer termination sucker rod body of rod.
The utility model for achieving the above object, by the following technical solutions: a kind of casting type oil pumping rod centering device, comprise centralizer body, it is characterized in that: described centralizer body is provided with three eccentric segment wear-resistant blocks along its axis direction, described three eccentric segment wear-resistant blocks along centralizer body axially successively dislocation be each other 120 degree angles and on average arrange and form original well liquid runner.
Between described eccentric segment wear-resistant block, be provided with runner interval.
The external surface of described eccentric segment wear-resistant block is arc surface.
The shape of cross section at described centralizer body two ends is the streamlined centralizer of concave termination by the camber line to axis direction and the tangent transition of oblique line respectively.
Beneficial effect: the wear-resistant cycle of the arc contact surface of three eccentric segment wear-resistant blocks is long, has weakened the damage to tube inner wall; Fan-shaped wear-resistant block is that centralizer radial circumference 120 degree are evenly distributed, axially dislocation design successively, and runner area of passage is strengthened, and can be widely used in all kinds of oily eccentric wear service shafts; Centralizer termination from end points to wear-resistant block maximum outside diameter is to be made up of R camber line and the tangent inclined-plane of oblique line, and the streamlined anti-eddy current in two ends and anti-choked flow design are alleviated or eliminate the sucker rod body of rod corrosion of centralizer termination.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 a-Fig. 2 c is three generalized sections that eccentric segment wear-resistant block arranges on centralizer body;
Fig. 3 is the partial enlarged drawing of centralizer body termination;
Fig. 4 is centralizer original well liquid runner schematic diagram.
In figure: 1, centralizer body, 2, eccentric segment wear-resistant block, 3, runner interval, 4, centralizer termination, 5, original well liquid runner, 6, sucker rod, 7, tube inner wall.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with preferred embodiment.
Refer to accompanying drawing 1-4, the defect that the utility model exists for prior art, according to CNPC's Oilfield Company bidding content, operative norm: SY/T5832-2009 " oil pumping rod centering device "; The sucker rod diameter that Q/12DG4827-2013 " oil pumping rod centering device (casting type) " is applicable to the anti-eccentric wear measure of inclined shaft, the casing deformation well of pumping production is: φ 19, φ 22 and pipe aperture are: φ 62mm uses.The nylon casting type oil pumping rod centering device of nylon injection-molding on sucker rod 6 will be strengthened and provide a kind of, comprise centralizer body 1, described centralizer body is provided with three eccentric segment wear-resistant blocks 2 along its axis direction, described three eccentric segment wear-resistant blocks along centralizer body axially successively dislocation be each other 120 degree angles and on average arrange and form original well liquid runner 5, between described eccentric segment wear-resistant block, be provided with runner interval 3.Runner area of passage is large, and three fan-shaped wear-resistant blocks of centralizer are that centralizer radial circumference 120 degree are evenly distributed, axially dislocation design successively, and original well liquid runner obviously increases area of passage.Realize internal diameter 62mm oil pipe area of passage 1410mm
2, make the area of passage of centralizer reach 46.70% of the 62mm oil pipe overcurrent gross area, meet the centralizer area of passage>=1100mm in industry standard SY/T5832-2009 " oil pumping rod centering device "
2regulation.As Fig. 4 shows, the centralizer area of passage that original well liquid runner 7 forms enlarges markedly.
Refer to Fig. 2, preferred version of the present utility model is that the external surface of described eccentric segment wear-resistant block is arc surface.Three fan-shaped wear-resistant blocks of centralizer, can bear respectively the radial load of tube inner wall 7, eccentric segment wear-resistant block circular arc external surface contacts the rubbing surface forming with tube inner wall, its circular arc area is large, contact surface is stressed evenly, therefore the pressure that born is less, can extend the effective time in oil well eccentric wear cycle and increase centralizer application life, and arc-shaped surface contact there will not be the centralizer friction scar of tube inner wall.
Refer to Fig. 3, preferred version of the present utility model is that the shape of cross section at described centralizer body two ends is the streamlined centralizer of concave termination 4 by the camber line to axis direction and the tangent transition of oblique line respectively.The two ends of centralizer from sucker rod external diameter gradually to the indent camber line of fan-shaped wear-resistant block direction, for streamlined anti-eddy current and anti-choked flow design, be that centralizer termination is without end face, to form streamlined by R camber line and the tangent inclined-plane of oblique line from end points to centralizer maximum outside diameter, can make original well liquid flow resistance reduce, weaken choked flow and eddy current that centralizer produces in the process of pumping, and alleviated or eliminated the corrosion phenomenon of original well liquid post to centralizer termination body of rod sucker rod.
The above, be only preferred embodiment of the present utility model, not structure of the present utility model done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of the technical solution of the utility model.
Claims (4)
1. a casting type oil pumping rod centering device, comprise centralizer body, it is characterized in that: described centralizer body is provided with three eccentric segment wear-resistant blocks along its axis direction, described three eccentric segment wear-resistant blocks along centralizer body axially successively dislocation be each other 120 degree angles and on average arrange and form original well liquid runner.
2. casting type oil pumping rod centering device according to claim 1, is characterized in that: between described eccentric segment wear-resistant block, be provided with runner interval.
3. casting type oil pumping rod centering device according to claim 2, is characterized in that: the external surface of described eccentric segment wear-resistant block is arc surface.
4. casting type oil pumping rod centering device according to claim 2, is characterized in that: the shape of cross section at described centralizer body two ends is the streamlined centralizer of concave termination by the camber line to axis direction and the tangent transition of oblique line respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669742.4U CN203626634U (en) | 2013-10-28 | 2013-10-28 | Casting type sucker rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669742.4U CN203626634U (en) | 2013-10-28 | 2013-10-28 | Casting type sucker rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626634U true CN203626634U (en) | 2014-06-04 |
Family
ID=50813123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320669742.4U Withdrawn - After Issue CN203626634U (en) | 2013-10-28 | 2013-10-28 | Casting type sucker rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203626634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541665A (en) * | 2013-10-28 | 2014-01-29 | 天津市伯乔工贸有限公司 | Casting type sucker rod centralizer |
-
2013
- 2013-10-28 CN CN201320669742.4U patent/CN203626634U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541665A (en) * | 2013-10-28 | 2014-01-29 | 天津市伯乔工贸有限公司 | Casting type sucker rod centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |