CN201187263Y - Horizontal well stationary type pipe column centralizer - Google Patents
Horizontal well stationary type pipe column centralizer Download PDFInfo
- Publication number
- CN201187263Y CN201187263Y CNU2008200897638U CN200820089763U CN201187263Y CN 201187263 Y CN201187263 Y CN 201187263Y CN U2008200897638 U CNU2008200897638 U CN U2008200897638U CN 200820089763 U CN200820089763 U CN 200820089763U CN 201187263 Y CN201187263 Y CN 201187263Y
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- CN
- China
- Prior art keywords
- centralizing
- centralizer
- top connection
- upper joint
- pipe column
- 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 - Lifetime
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Abstract
A horizontal fixed type pipe column centralizer relates to a centralizer used in an oil field. The centralizer solves the problem that when the hardness of an elastic sheet steel of the centralizer is lower, the centralizing effect is reduced, and when the harness thereof is too high, the elastic sheet steel can not pass through the bent part of a bushing. A centralizing shell body (3) is sheathed on an upper joint (1) and butted against an upper shoulder end surface (1-1) of the upper joint (1); a lower joint (4) is sheathed in the upper joint (1) at the lower end of the centralizing shell body and is butted against a lower shoulder end surface (1-2) of the upper joint; the lower joint (4) is in threaded connection with the upper joint (1); centralizing holes (3-1), and centralizing balls (2) are embedded in the centralizing holes (3-1). The centralizer has simple structure, needs not to be realized, has small tool radial and linear size so as to conveniently pull out a tool; the centralizing manner adopts the rolling steel ball manner, thereby having the centralizing function, and protecting the pipe column and the bushing; three-level centralization is adopted so as to improve centralizing effect.
Description
Technical field
The utility model relates to a kind of centralizer.
Background technology
Present domestic oilfield horizontal well down-hole string centralizer mainly is an elastic centralizer, makes when the elastic steel sheet hardness of elastic centralizer is low that setting upright effect descends, and is difficult for the crooked position by sleeve pipe when the elastic steel sheet hardness of elastic centralizer is high.
The utility model content
The purpose of this utility model provides the fixed tubing string centralizer of a kind of horizontal well, make when hanging down that setting upright effect descends, and is difficult for the problem by the crooked position of sleeve pipe when the elastic steel sheet hardness of elastic centralizer is high with the elastic steel sheet hardness that solves present elastic centralizer.The utility model comprises top connection, sets upright ball, sets upright housing and lower contact, setting upright housing is sleeved in the top connection and with the upper shoulder end face of top connection and leans on mutually, lower contact is sleeved in the top connection of setting upright the housing lower end and with the lower shoulder end face of top connection and leans on mutually, lower contact is threaded with top connection, set upright and be evenly equipped with righting hole on the housing, set upright ball and be embedded in the righting hole.
The utlity model has following beneficial effect: the utility model is simple in structure, need not to discharge, and it is little that instrument radially reaches length dimension, removes conveniently easy crooked position by sleeve pipe; But the mode of setting upright adopts the rolling steel balls formula, both can play the effect of setting upright, and can reduce tubing string again and remove frictional resistance in the process, protection tubing string and sleeve pipe; Adopt three grades and set upright, improve and set upright effect.
Description of drawings
Fig. 1 is an overall structure front view of the present utility model.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment comprises top connection 1, sets upright ball 2, sets upright housing 3 and lower contact 4, setting upright housing 3 is sleeved in the top connection 1 and with the upper shoulder end face 1-1 of top connection 1 and leans on mutually, lower contact 4 is sleeved in the top connection 1 of setting upright housing 3 lower ends and with the lower shoulder end face 1-2 of top connection 1 and leans on mutually, lower contact 4 is threaded with top connection 1, set upright and be evenly equipped with righting hole 3-1 on the housing 3, set upright ball 2 and be embedded in the righting hole 3-1.Present embodiment selects certain position to install in horizontal well machinery water blockoff or other process pipe string; in tubing string is gone into the well process, set upright ball and contact back generation rolling with casing wall, prevent tubing string and casing wall contact friction; both the frictional resistance that can reduce to remove can be protected tubing string and sleeve pipe again.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, what present embodiment and the specific embodiment one were different is: present embodiment also increases sealing ring 5, between top connection 1 and the lower contact 4 by sealing ring 5 sealings.So being provided with is in order to realize the excellent sealing between top connection and the lower contact.
Claims (2)
1, the fixed tubing string centralizer of horizontal well, it comprises top connection (1), sets upright ball (2), sets upright housing (3) and lower contact (4), it is characterized in that setting upright housing (3) is sleeved on that top connection (1) is gone up and leans on mutually with the upper shoulder end face (1-1) of top connection (1), lower contact (4) is sleeved on the top connection (1) of setting upright housing (3) lower end and goes up and lean on mutually with the lower shoulder end face (1-2) of top connection (1), lower contact (4) is threaded with top connection (1), set upright and be evenly equipped with righting hole (3-1) on the housing (3), set upright ball (2) and be embedded in the righting hole (3-1).
2, the fixed tubing string centralizer of horizontal well according to claim 1 is characterized in that it also comprises sealing ring (5), seals by sealing ring (5) between top connection (1) and the lower contact (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200897638U CN201187263Y (en) | 2008-04-18 | 2008-04-18 | Horizontal well stationary type pipe column centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200897638U CN201187263Y (en) | 2008-04-18 | 2008-04-18 | Horizontal well stationary type pipe column centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187263Y true CN201187263Y (en) | 2009-01-28 |
Family
ID=40310282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200897638U Expired - Lifetime CN201187263Y (en) | 2008-04-18 | 2008-04-18 | Horizontal well stationary type pipe column centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187263Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979817A (en) * | 2010-11-24 | 2011-02-23 | 西南石油大学 | Ditrigonal centralizer |
| CN105735914A (en) * | 2016-04-29 | 2016-07-06 | 成都来宝石油设备有限公司 | Detachable ball-sliding centralizer |
| CN105909187A (en) * | 2016-04-29 | 2016-08-31 | 成都来宝石油设备有限公司 | Detachable threaded connection centering device |
-
2008
- 2008-04-18 CN CNU2008200897638U patent/CN201187263Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979817A (en) * | 2010-11-24 | 2011-02-23 | 西南石油大学 | Ditrigonal centralizer |
| CN105735914A (en) * | 2016-04-29 | 2016-07-06 | 成都来宝石油设备有限公司 | Detachable ball-sliding centralizer |
| CN105909187A (en) * | 2016-04-29 | 2016-08-31 | 成都来宝石油设备有限公司 | Detachable threaded connection centering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |
|
| CX01 | Expiry of patent term |