CN201810225U - Eccentric wear resistant sucker rod nipple - Google Patents
Eccentric wear resistant sucker rod nipple Download PDFInfo
- Publication number
- CN201810225U CN201810225U CN2010201815276U CN201020181527U CN201810225U CN 201810225 U CN201810225 U CN 201810225U CN 2010201815276 U CN2010201815276 U CN 2010201815276U CN 201020181527 U CN201020181527 U CN 201020181527U CN 201810225 U CN201810225 U CN 201810225U
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- CN
- China
- Prior art keywords
- sucker rod
- ring
- eccentric wear
- wear resistant
- nipple
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to an eccentric wear resistant sucker rod nipple, which consists of a sucker rod nipple, a protective ring, a metal ceramic ring and a retainer ring, wherein the protective ring and the metal ceramic ring are sleeved outside the sucker rod nipple, are connected by using a structure with convex and concave end faces and can rotate together around a body of the sucker rod nipple; and the sucker rod nipple and the retainer ring are assembled into a whole in an interference fit manner. The outer surface of the metal ceramic ring is a prismatic curved surface; the radian of the outer surface of the metal ceramic ring is completely consistent with that of the curved surface on the inner wall of an oil pipe; the outer surface of the metal ceramic ring is contacted with the oil pipe in a complete surface contact manner, is smooth and free from corrosion, and reduces the wear on the inner wall of the oil pipe. When the eccentric wear resistant sucker rod nipple is used, the eccentric wear resistant sucker rod nipple is connected in series with a sucker rod joint to form an eccentric wear resistant sucker rod column combination. The eccentric wear resistant sucker rod nipple has the advantages of novel structure and strong adaptability, is reasonable in design, can work reliably and can be reused.
Description
Technical field:
The utility model relates to a kind of downhole tool that oil exploitation sucker rod pumping oil well prevents oil pipe and sucker rod partial wear that is used for.
Background technology:
For a long time, in oil exploitation sucker rod pumping process, generally adopt on sucker rod or oil pumping rod centering device and anti-wear material to be installed to prevent oil pipe and sucker rod partial wear.The sucker rod anti-wear material of field by using is of a great variety at present, and structure is different.Wherein, install anti-wear material mostly additional on oil pumping rod centering device, all poor because of the anti-wear material abrasive resistance as nylon, carbon fiber etc., after a period of time wearing and tearing, rod collar and tube inner wall still will wear and tear; As doing oil pumping rod centering device with Hardmetal materials, hardness is high, but owing to be metal material, be subjected to the corrosion of the acid and alkali corrosion liquid in the oil well easily, contacted metal surface between the tube inner wall of itself and metal, mill is coarse more more, has aggravated the eccentric wear of centralizer and tube inner wall; And because the oil pumping rod centering device external diameter that adopts is less than the tube inner wall diameter mostly, the oil pumping rod centering device external surface is that line contacts sliding friction with tube inner wall during use, and the time has been grown and will wear into zanjon one at tube inner wall, causes the run-down damage of oil pipe.
The utility model content:
The purpose of this utility model is to provide a kind of long service life, burn into side and tube inner wall do not fit like a glove, face contact friction, the eccentric wear prevention pumping rod pipe nipple of, convenient and reliable operation little, reusable to the tube inner wall wearing and tearing.
The technical solution of the utility model is as follows:
The utility model is made up of sucker rod substitute, protective ring, cermet ring and baffle ring, it is characterized in that: the sucker rod substitute outside is set with protective ring and cermet ring, protective ring and cermet ring take the end face concaveconvex structure to connect, and can be together around the body rotation of sucker rod substitute, sucker rod substitute and baffle ring adopt interference fit to be integral.During use this abrasionproof sucker rod substitute and conventional rod collar and joint are connected in series, a plurality of abrasionproof sucker rod substitutes are distributed in rod string, because abrasionproof sucker rod substitute diameter is more bigger than conventional rod collar, can form the eccentric wear prevention pumping rod column combination.The external surface shape of cermet ring is prismatoidal curved surface, and its radian and tube inner wall curved surface radian are in full accord, makes that sucker rod substitute is the face contact fully when contacting with oil pipe, reduces contact surface pressure, reduces the wearing and tearing to tube inner wall.The utility model novel structure; reasonable in design, reliable operation, construction operation is simple to operate; adopt the cermet structure of high hardness wear-resisting; because its smooth surface is taked face contact slide design, reduces the pressure with the tube inner wall contact surface; simultaneously not perishable; long service life with the wearing and tearing that greatly reduce oil pipe, prolongs protection sucker rod and oil pipe application life.This kind eccentric wear prevention pumping rod pipe nipple can be reused, and compliance is strong.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is the sectional view of A-A direction under the user mode.
Accompanying drawing 3 is an assembling stereogram of the present utility model.
The specific embodiment: enforcement of the present utility model is described further below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of sucker rod substitute 1, protective ring 2, cermet ring 3 and baffle ring 4, and wherein sucker rod substitute 1 is a tubing nipple, and box cupling, body and the screw thread of standard arranged, and protective ring 2 and cermet ring 3 are penetrated wherein; The end face of cermet ring 3, be provided with several column pits, at the adjacent end face of each protective ring 2 and cermet ring 3, several protruding cylinders are arranged, concavo-convex cooperation, protective ring 2 takes the end face concaveconvex structure to peg graft with cermet ring 3, and can be together rotate around the body of sucker rod substitute 1, in the use of going into the well, can make the prismatoidal curved surface of cermet ring 3 and protective ring 2 be affixed to the low limit that contacts with oil pipe 5, produce the curved surface friction effect; By taking interference equipped the body and the baffle ring 4 of sucker rod substitute 1, form an integral body; The box cupling outside of sucker rod substitute 1 has the planar slot of keeping supplying the pincers operation of cramping.During use this abrasionproof sucker rod substitute is connected with rod connector, a plurality of eccentric wear prevention pumping rod pipe nipples are distributed on the rod string, form the eccentric wear prevention pumping rod column combination.
When sucker rod is worked, the external surface shape of cermet ring 3 is prismatoidal curved surface, because its radian and oil pipe 5 inwall curved surface radians are in full accord, make this sucker rod substitute when contacting with oil pipe 5 inwalls, be the face contact fully, reduce contact surface pressure, reduce wearing and tearing oil pipe 5 inwalls.
The end face appearance profile that two protective rings 2 and cermet ring 3 are adjacent and the end profile of cermet ring 3 are consistent; also be prismatoidal curve; the other end has certain chamfering; cermet ring 3 is played a protective role; in the transportation of sucker rod substitute 1, go into the well or when playing flowline 5 with sucker rod, effectively prevent cermet ring 3 collide with and directly to hang clashing and breaking bad with oil pipe 5 inwalls.The material of protective ring 2 can be metal, rubber or nylon etc.
Baffle ring 4 is a metal material.
Claims (2)
1. eccentric wear prevention pumping rod pipe nipple, form by sucker rod substitute (1), protective ring (2), cermet ring (3) and baffle ring (4), it is characterized in that: sucker rod substitute (1) outside is set with protective ring (2) and cermet ring (3), protective ring (2) takes the end face concaveconvex structure to peg graft with cermet ring (3), and can be together around the body rotation of sucker rod substitute (1), sucker rod substitute and baffle ring (4) are integral with interference fit.
2. a kind of eccentric wear prevention pumping rod pipe nipple according to claim 1 is characterized in that the external surface shape of cermet ring (3) is prismatoidal curved surface, and its radian and oil pipe (5) inwall curved surface radian is in full accord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201815276U CN201810225U (en) | 2010-04-18 | 2010-04-18 | Eccentric wear resistant sucker rod nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201815276U CN201810225U (en) | 2010-04-18 | 2010-04-18 | Eccentric wear resistant sucker rod nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810225U true CN201810225U (en) | 2011-04-27 |
Family
ID=43893168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201815276U Expired - Fee Related CN201810225U (en) | 2010-04-18 | 2010-04-18 | Eccentric wear resistant sucker rod nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810225U (en) |
-
2010
- 2010-04-18 CN CN2010201815276U patent/CN201810225U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20130418 |