CN2918710Y - Jack catch type pumping rod secund-wear prevention centralizer - Google Patents
Jack catch type pumping rod secund-wear prevention centralizer Download PDFInfo
- Publication number
- CN2918710Y CN2918710Y CN 200620081968 CN200620081968U CN2918710Y CN 2918710 Y CN2918710 Y CN 2918710Y CN 200620081968 CN200620081968 CN 200620081968 CN 200620081968 U CN200620081968 U CN 200620081968U CN 2918710 Y CN2918710 Y CN 2918710Y
- Authority
- CN
- China
- Prior art keywords
- centralizer
- pumping rod
- sucker rod
- abrasion
- elastic card
- 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 discloses an anti-bias abrasion jaw pumping rod centralizer, which is in particular suitable for the oil well, where serious bias abrasion of the pumping rod occurs. The utility model comprises an abrasion proof sleeve (2) and an elastic jaw (1). The abrasion proof sleeve (2) is provided with an elastic jaw (1) at the bottom, whose structure is an orange-peel cylinder; the elastic jaw (1) head section is a gourd-shaped profile and can be a spherical, elliptic, triangular or trapeziform profile; when the centralizer gets down to a certain depth along with the pumping rod, the position of the centralizer is fixed relative to the oil pipe under the effect of the elastic jaw (1); when the pumping rod is in service, the pumping rod and the abrasion proof sleeve are in relative movement to keep the pumping rod at the center of the oil pipe so as to avoid the abrasion between the pumping rod and the inner wall of the oil pipe and increase the service life of the pipe and the rod.
Description
One, relate to the field:
The utility model relates to a kind of jack catchs type sucker rod deflection abrasion preventing centralizer, the more serious oil well of particularly suitable oil field sucker rod partial wear.
Two, background technology:
The on-the-spot at present sucker rod deflection abrasion preventing centralizer of going up use has two kinds: a kind of is to move up and down the formula centralizer with sucker rod, its centralizer is enclosed within on the sucker rod, move up and down with sucker rod, the ball formula is arranged, wheeled, nylon centralizer body formula etc., it exists the life-span low, centralizer is to problems such as oil pipe serious wear, second kind is to have introduced the inclined to one side sharpening centralizer of spring chip sucker rod as patent CN200410023700.9, be characterized under the centralizer in oil pipe, centralizer and oil pipe relative fixed under the effect of spring leaf, sucker rod and centralizer endoporus relatively move, thereby prevent pipe, bar weares and teares mutually, improve the pipe bar life-span, but spring chip centralizer is because spring leaf is easy to be bumped disconnected when sucker rod removes, particularly after one-period is used in the down-hole, spring leaf heavy corrosion, spring leaf easily cause fracture, bring accident to underground work.
Three, summary of the invention:
The purpose of this utility model provides the anti-inclined to one side centralizer of a kind of jack catchs type sucker rod, its claw good springiness, and the intensity height, a lower sucker rod is difficult for bumping disconnected, and long service life is set upright effective.
The utility model is to realize like this, it is made up of wear-resistant sleeve and elastic card claw, be connected to an elastic card claw in the wear-resistant sleeve lower end, its elastic card claw is the multi-clove type core structure, the head cross section of claw is two broad in the middle minor structure, the cross section can be sphere shape or ellipse or triangle or trapezium structure, and the slightly larger in diameter of its elastic card claw head is in tubing diameter, and the wear-resistant sleeve internal diameter is slightly larger than the sucker rod diameter.During use, centralizer is enclosed within on the sucker rod, along with sucker rod G.I.H together, elastic card claw part undergauge under the restriction of pipe aperture, descending under sucker rod deadweight effect, when centralizer with sucker rod under after desired depth, centralizer under the effect of elastic card claw with the position relative fixed of oil pipe, when sucker rod is worked, sucker rod and wear-resistant sleeve relative motion keep between two parties sucker rod in oil pipe, thereby prevent sucker rod and tube inner wall wearing and tearing, improve pipe bar application life, when sucker rod tripped out, under the up pulling force of sucker rod, rod collar partly had been with centralizer up, tripped out ground, finished a work period.
The utility model is simple in structure, convenient processing and manufacture, and the claw good springiness, anti-eccentric wear is effective, long service life.
Four, description of drawings:
Fig. 1, claw sucker rod deflection abrasion preventing centralizer structural representation
Fig. 2, claw structure sectional drawing
Fig. 3, claw structure expanded view
Five, embodiment:
The utility model is made up of wear-resistant sleeve (2) and elastic card claw (1), be connected to an elastic card claw (1) in wear-resistant sleeve (2) lower end, its elastic card claw (1) is the multi-clove type core structure, the head cross section of claw (1) is two broad in the middle minor structure, the cross section can be sphere shape or ellipse or triangle or trapezium structure, the slightly larger in diameter of its elastic card claw (1) head is in tubing diameter, and wear-resistant sleeve (2) internal diameter is slightly larger than the sucker rod diameter.During use, centralizer is enclosed within on the sucker rod, along with sucker rod G.I.H together, elastic card claw (1) part undergauge under the restriction of pipe aperture, descending under sucker rod deadweight effect, when centralizer with sucker rod under after desired depth, centralizer under the effect of elastic card claw (1) with the position relative fixed of oil pipe, when sucker rod is worked, sucker rod and wear-resistant sleeve (2) relative motion keeps between two parties sucker rod in oil pipe, thereby prevents sucker rod and tube inner wall wearing and tearing, improve pipe bar application life, when sucker rod tripped out, under the up pulling force of sucker rod, rod collar partly had been with centralizer up, tripped out ground, finished a work period.
Claims (2)
1, a kind of jack catchs type sucker rod deflection abrasion preventing centralizer, it is made up of wear-resistant sleeve (2) and elastic card claw (1) etc., it is characterized in that being connected to an elastic card claw (1) in the lower end of wear-resistant sleeve (2), and its elastic card claw (1) structure is the multi-clove type tubular construction.
2, jack catchs type sucker rod deflection abrasion preventing centralizer according to claim 1, the head cross section that it is characterized in that elastic card claw (1) are the little structure broad in the middle in two, and the cross section can be sphere or ellipse or triangular form or trapezium structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620081968 CN2918710Y (en) | 2006-03-15 | 2006-03-15 | Jack catch type pumping rod secund-wear prevention centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620081968 CN2918710Y (en) | 2006-03-15 | 2006-03-15 | Jack catch type pumping rod secund-wear prevention centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2918710Y true CN2918710Y (en) | 2007-07-04 |
Family
ID=38216527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620081968 Expired - Fee Related CN2918710Y (en) | 2006-03-15 | 2006-03-15 | Jack catch type pumping rod secund-wear prevention centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2918710Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501049A (en) * | 2011-10-31 | 2012-06-20 | 长城汽车股份有限公司 | Assembling device for snap spring |
-
2006
- 2006-03-15 CN CN 200620081968 patent/CN2918710Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501049A (en) * | 2011-10-31 | 2012-06-20 | 长城汽车股份有限公司 | Assembling device for snap spring |
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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 |