CN2637704Y - Tapered thread short contact strengthening apparatus - Google Patents
Tapered thread short contact strengthening apparatus Download PDFInfo
- Publication number
- CN2637704Y CN2637704Y CN 03276529 CN03276529U CN2637704Y CN 2637704 Y CN2637704 Y CN 2637704Y CN 03276529 CN03276529 CN 03276529 CN 03276529 U CN03276529 U CN 03276529U CN 2637704 Y CN2637704 Y CN 2637704Y
- Authority
- CN
- China
- Prior art keywords
- short circuit
- centralizer
- utility
- model
- taper thread
- 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 relates to a taper thread sub centering device which solves the problems of the existing sub centering device such as the easy blockage of the oil pipe and easy breakage at the connection point with the sucker rod. The utility model is characterized in that an upper joint and a lower joint (3, 4) of a sub body (1) are internal taper thread and external taper thread respectively; a plurality of spiral convex edges (5) are arranged on the outer wall of a centering device (2). The utility model can play the role of centering and protecting and can purge the wax precipitation on the inner wall of the oil tube; also the oil pipe is never blocked or broken off.
Description
Technical field:
The utility model relates to the used downhole tool in oil field development field, belongs to taper thread short circuit centralizer.
Background technology:
At present along with the deepening continuously of oil field development, particularly have bar to recover the oil since, the wearing and tearing that the interaction between each oil production equipment accessory causes are more and more serious, wherein rod collar and centralizer are the essential products that has bar to recover the oil.And existing short circuit centralizer generally is the column centralizer, when the tube inner wall wax deposition is serious, oil pipe is blocked easily at the centralizer place, and then down-hole crude oil is extracted out, must operation could remove wax deposition, simultaneously, what this short circuit adopted is that straight thread connects, because sucker rod pumps, takes off easy the breaking of short circuit and sucker rod junction, cause down-hole accident, bring loss to production.
The utility model content:
For overcome existing short circuit centralizer easily stop up oil pipe and with the easily disconnected deficiency of taking off in sucker rod junction; the utility model provides a kind of taper thread short circuit centralizer; this centralizer can play sets upright protective effect; can remove the wax deposition of tube inner wall again, have oil pipe and the not easily broken characteristics of taking off do not stopped up.
Technical solution adopted in the utility model is: this taper thread short circuit centralizer comprises short circuit body and centralizer body, and centralizer body and short circuit body are cast into one, and lower contact is respectively interior outer cone thread on the short circuit body, and the centralizer body outer wall has some spirality fins.
Above-mentioned fin is 4.
The beneficial effects of the utility model are: owing to lower contact on the short circuit body of taking in the such scheme is respectively interior outer cone thread, be connected fasteningly between short circuit body and the sucker rod, the sucker rod alternating stresses that is produced that pumps can not make short circuit body and rod parting; In addition, owing to the centralizer body outer wall has some spirality fins, guarantee can strike off when the oil smoothness is logical the wax deposition of tube inner wall, it is blocked to make that the interior centralizer body place of oil pipe is difficult for, and can play and set upright protective effect, does not stop up oil pipe and not easily broken taking off again.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
1-short circuit body among the figure, 2-centralizer body, 3-top connection, 4-lower contact, 5-fin.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this taper thread short circuit centralizer comprises short circuit body 1 and centralizer body 2, centralizer body 2 is cast into one with short circuit body 1, lower contact (3 on the short circuit body 1,4) be respectively interior outer cone thread, be connected fasteningly between short circuit body 1 and the sucker rod, the sucker rod alternating stresses that is produced that pumps can not make short circuit body 1 and rod parting, can in use not take off because of it is disconnected and cause down-hole accident; Centralizer body 2 outer walls have some spirality fins 5; the fin 5 on centralizer body 2 surfaces can be 4; make and face the groove that 5 of fins have oil stream mutually; guarantee that oil is smooth logical, because fin 5 is a spirality, can strike off the wax deposition of tube inner wall simultaneously; make centralizer body 2 places in the oil pipe be difficult for blocked; can play and set upright protective effect, not stop up oil pipe and not easily broken taking off again, be beneficial to carrying out steadily of field produces.
Claims (2)
1, a kind of taper thread short circuit centralizer, comprise short circuit body (1) and centralizer body (2), centralizer body (2) is cast into one with short circuit body (1), it is characterized in that: short circuit body (1) is gone up lower contact (3,4) be respectively interior outer cone thread, centralizer body (2) outer wall has some spirality fins (5).
2, taper thread short circuit centralizer according to claim 1, it is characterized in that: fin (5) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276529 CN2637704Y (en) | 2003-08-21 | 2003-08-21 | Tapered thread short contact strengthening apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276529 CN2637704Y (en) | 2003-08-21 | 2003-08-21 | Tapered thread short contact strengthening apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2637704Y true CN2637704Y (en) | 2004-09-01 |
Family
ID=34302394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03276529 Expired - Fee Related CN2637704Y (en) | 2003-08-21 | 2003-08-21 | Tapered thread short contact strengthening apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2637704Y (en) |
Cited By (2)
| 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 |
| CN109138861A (en) * | 2018-09-27 | 2019-01-04 | 大庆宏测技术服务有限公司 | Cement paste vortex generator mud cake scraping type spiral-flow type centralizing tool |
-
2003
- 2003-08-21 CN CN 03276529 patent/CN2637704Y/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN109138861A (en) * | 2018-09-27 | 2019-01-04 | 大庆宏测技术服务有限公司 | Cement paste vortex generator mud cake scraping type spiral-flow type centralizing tool |
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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 |