CN2869280Y - Dual rolling bearing type sucker rod centralising device - Google Patents
Dual rolling bearing type sucker rod centralising device Download PDFInfo
- Publication number
- CN2869280Y CN2869280Y CN 200520086906 CN200520086906U CN2869280Y CN 2869280 Y CN2869280 Y CN 2869280Y CN 200520086906 CN200520086906 CN 200520086906 CN 200520086906 U CN200520086906 U CN 200520086906U CN 2869280 Y CN2869280 Y CN 2869280Y
- Authority
- CN
- China
- Prior art keywords
- rod
- centralizer
- supporting positive
- bearing type
- rolling
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a double-roller bearing type of pumping rod centralizer with characters of corrosion-resistance, wear-resistance and high fatigue life to solve the problem of eccentric wear of pumping rod and tube in oil well, which comprises a centralizer rod provided with threads at the two ends, a sectional type casing, a rolling sphere, a spacing ring and a restraint ring. The utility model is characterized in that two provided casings are composed of two casing sections respectively, on which 4 (5 or 6) rolling spheres made of high hardness nanophase ceramics material with characters of corrosion-resistance and wear-resistance mounted in the holes on the jut of connections of two casing sections. The rolling spheres can be arrayed in regular quadrangle (or pentagon or hexagon). The two casings and rolling spheres are crossed arrayed along the axis of centralizer rod and fastened by spacing ring and restraint ring. Threads are provided at the both ends of centralizer rod to connect pumping rods at two sides.
Description
Technical field
The utility model relates to well rod and connects erection device, the two-rolling bearing type pumping rod centralizer of especially a kind of rub resistance, corrosion resistance and good.
Background technology
The sucker rod pumping device is adopted in present oil field more.It drives oil well pump by oil pumper by rod string crude oil is lifted to well head.When oil reservoir distributes apart from ground when dark, have Korrosionsmedium in rod string very long or the inclination of oil well own or bending and the sucker rod working environment, cause sucker rod and oil pipe to wear and tear and corrosion phenomenon very serious.Existing oil pumping rod centering device is wear-resistant and poor corrosion resistance, and fatigue life is lower, and the accident that causes rod broken or oil pipe to be worn through happens occasionally.
Summary of the invention
The purpose of this utility model is to develop a kind of two-rolling bearing type pumping rod centralizer for overcoming problems such as existing oil pumping rod centering device corrosion resistance, wear resistance difference and fatigue life be low.It comprises the centralizer body of rod (1), rolling ball body (2), spacing ring (3), dead ring (4), supporting positive cover piecemeal one (5) and supporting positive cover piecemeal two (6).Wherein two supporting positive covers adopt sectional types, are made up of supporting positive cover piecemeal one (5) and piecemeal two (6), two piecemeals (5) dock the hole slot of prominence with (6) in four (or five, six) individual rolling ball bodies (2) are installed.Rolling ball body (2) employing is wear-resisting, the high hardness nanocomposite ceramic materials of corrosion resistance and good, is regular polygon and arranges, and each rolling ball body was provided with oily passage between (2).Two supporting positive covers are fixed on the centralizer body of rod (1) by dead ring (4) by spacing ring (3) location.Two sectional type supporting positive covers and spacing ring (3) and the centralizer body of rod (1) matched in clearance.Dead ring (4) is connected by screw thread with the centralizer body of rod (1).Two supporting positive covers axially are staggered along centralizer bar (1), are positive four (or five, six) limit shape as rolling ball body (2) and arrange, and then its angle is 45 ° (or 36 °, 30 °).The centralizer body of rod (1) two ends are provided with screw thread, so that be connected with sucker rod.Owing to adopt rolling friction pair between ceramic rolling ball body (2) and the tube inner wall, reduced the rod tube wearing and tearing.Two supporting positive covers and rolling ball body (2) are staggered and have optimized the oil rig load distribution, have improved the fatigue life of oil pumping rod centering device, have prolonged the rod string underground work cycle.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The 1. centralizer bodies of rod among the figure, 2. rolling ball body, 3. spacing ring, 4. dead ring, 5. the supporting positive cover piecemeal one, and 6. the supporting positive cover piecemeal two.
Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment
Specify embodiment of the present utility model below in conjunction with accompanying drawing: two supporting positive covers adopt fraction block structure, are made up of supporting positive cover piecemeal 1 and supporting positive cover piecemeal 26.Rolling ball body 2 is positioned supporting positive cover piecemeal 1 and docks with 26 in the hole slot that forms, and is regular polygon and arranges.By dead ring (4) two supporting positive cover and spacing rings of being made up of piecemeal 5 and 63 are fixed on the centralizer body of rod 1.Two supporting positive covers axially are staggered along centralizer bar 1, arrange as rolling ball body Cheng Zhengsi (or five, six) limit shape, and then the angle of 2 of two supporting positive covers and rolling ball bodies is 45 ° (or 36 °, 30 °).The centralizer body of rod 1 is connected with the sucker rod at two ends by screw thread.In the course of the work, crude oil rises through the oily passage of the mistake of 2 of each rolling ball bodies on the supporting positive cover, and rolling ball body 2 and tube inner wall rolling friction have reduced frictional force.
Claims (4)
1. two-rolling bearing type pumping rod centralizer, the supporting positive cover that the centralizer body of rod (1), two that comprises TBE (threaded both ends) is made up of supporting positive cover piecemeal (5) and (6) and be installed in rolling ball body (2) in the hole slot of supporting positive cover external surface prominence, it is characterized in that: supporting positive cover is provided with rolling ball body (2), two supporting positive covers by spacing ring (3) and dead ring (4) positioning and fixing on the centralizer body of rod (1).
2. a kind of two-rolling bearing type pumping rod centralizer according to claim 1, it is characterized in that: supporting positive cover adopts fraction block structure, form by supporting positive cover piecemeal one (5) and supporting positive cover piecemeal two (6), supporting positive cover piecemeal (5) docks the hole slot of prominence with (6) in, be equipped with four or five, six and be the rolling ball bodies (2) that regular polygon is arranged.
3. a kind of two-rolling bearing type pumping rod centralizer according to claim 1 is characterized in that: rolling ball body (2) adopts high hardness nanocomposite ceramic materials wear-resistant, corrosion resistance and good.
4. a kind of two-rolling bearing type pumping rod centralizer according to claim 1, it is characterized in that: go up at the centralizer body of rod (1) two supporting positive covers are installed, two supporting positive covers axially are staggered along the centralizer body of rod (1), when rolling ball body (2) is positive four or five, hexagonal array, then its angle is 45 ° or 36 °, 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520086906 CN2869280Y (en) | 2005-08-31 | 2005-08-31 | Dual rolling bearing type sucker rod centralising device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520086906 CN2869280Y (en) | 2005-08-31 | 2005-08-31 | Dual rolling bearing type sucker rod centralising device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869280Y true CN2869280Y (en) | 2007-02-14 |
Family
ID=37724215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520086906 Expired - Fee Related CN2869280Y (en) | 2005-08-31 | 2005-08-31 | Dual rolling bearing type sucker rod centralising device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869280Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699022B (en) * | 2009-11-06 | 2012-07-04 | 陈建军 | Circular ring type oil pumping rod centering device |
| CN109138864A (en) * | 2018-10-19 | 2019-01-04 | 陈永志 | A kind of Anti-grinding centering guide of sucker rod |
| GB2585898A (en) * | 2019-07-22 | 2021-01-27 | Vulcan Completion Products Uk Ltd | Centraliser |
-
2005
- 2005-08-31 CN CN 200520086906 patent/CN2869280Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699022B (en) * | 2009-11-06 | 2012-07-04 | 陈建军 | Circular ring type oil pumping rod centering device |
| CN109138864A (en) * | 2018-10-19 | 2019-01-04 | 陈永志 | A kind of Anti-grinding centering guide of sucker rod |
| GB2585898A (en) * | 2019-07-22 | 2021-01-27 | Vulcan Completion Products Uk Ltd | Centraliser |
| GB2585898B (en) * | 2019-07-22 | 2023-05-31 | Vulcan Completion Products Uk Ltd | Centraliser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10760367B2 (en) | Wellhead sealing device of sucker-rod pumping machine | |
| CN2869280Y (en) | Dual rolling bearing type sucker rod centralising device | |
| CA2980040A1 (en) | Gripper assembly for continuous rod | |
| CN203641150U (en) | Drive device for correcting reciprocating movement direction of piston rod through rolling friction | |
| CN107091060A (en) | Multi-stage water power pressurizer based on mechanical device | |
| CN2799838Y (en) | Screw type pumping rod centralizer | |
| CN1924285A (en) | Two-rolling bearing type pumping rod centralizer | |
| CN102337851A (en) | Oil production wellhead device capable of rotating automatically | |
| CN209875076U (en) | Anti-drop and anti-eccentric wear device for sucker rod | |
| CN203516078U (en) | Mechanical strongly-twisted plunger rotator | |
| CN214330514U (en) | Double-acting hydraulic impactor for petroleum drilling | |
| CN2804366Y (en) | Wear-proof device for oil filling tube of sucker rod | |
| CN201786274U (en) | High wear resistance rotary sucker rod eccentric wear prevention centralizer | |
| CN2799839Y (en) | Centralizer of pumping rod | |
| CN201818249U (en) | Positioning anti-eccentric wear device | |
| CN200946461Y (en) | Pumping rod weighting tube | |
| CN221568373U (en) | Eccentric wear prevention rotary centralizer for sucker rod | |
| CN201059169Y (en) | Sucker rod elastic centralizer | |
| CN202073508U (en) | Positioning eccentric wear prevention device | |
| CN201306127Y (en) | Double curved surface protective sucker rod coupling | |
| CN221119875U (en) | Protection joint of wear-resistant centralizer | |
| CN201031631Y (en) | Rotary corrector for sucker rod | |
| CN2869281Y (en) | Sucker rod centralishing device | |
| CN2293638Y (en) | Sucker rod centralizer | |
| CN110080693A (en) | A kind of centralising device for drilling tool |
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 |