CN201110139Y - Combined centralizer - Google Patents
Combined centralizer Download PDFInfo
- Publication number
- CN201110139Y CN201110139Y CNU2007201819326U CN200720181932U CN201110139Y CN 201110139 Y CN201110139 Y CN 201110139Y CN U2007201819326 U CNU2007201819326 U CN U2007201819326U CN 200720181932 U CN200720181932 U CN 200720181932U CN 201110139 Y CN201110139 Y CN 201110139Y
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- CN
- China
- Prior art keywords
- support sleeve
- support cover
- lower support
- upper support
- spring
- 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 provides a combined type stabilizer, which solves the problems of settling and centering of a well cementing cannula with special technique or well logging tools. The combined type stabilizer mainly comprises an upper support sleeve (1), a spring (2), a stabilizing strip (3) and a lower support sleeve (4), wherein the spring (2) and the stabilizing strip (3) are arranged between the upper support sleeve (1) and the lower support sleeve (4). The stabilizing strip (3) is made of elastic material, and the outer surface of the stabilizing strip (3) is coated with one layer of abrasion and drag resisting material. Both ends of a plurality of stabilizing strips (3) are respectively and moveably connected with the upper support sleeve (1) and the lower support sleeve (4). Any end of the spring (2) is fixed on the upper support sleeve (1) and the lower support sleeve (4), and the other end is a free end. A gap exists between the inner diameter of the stabilizer and the outer diameter of a column jacket. The combined type stabilizer can adjust the effective outer diameter according to well bore status, which is beneficial for the column jacket and logging devices to smoothly settle down and center.
Description
Technical field
The utility model relates to the well cementation or the logging operation instrument of special wells such as oil gas field horizontal well, Multilateral Wells, and particularly a kind of combined type centralizer belongs to the downhole tool class.
Background technology
In solid, the completion practice and logging operation of special well such as horizontal well, Multilateral Wells, generally to be lowered to centralizer and make sleeve pipe or logger placed in the middle, to obtain uniform cement sheath or to obtain log data accurately.Centralizer commonly used at present mainly contains two kinds, promptly pure rigidity centralizer and spring-piece type elastic centralizer.But in exceptional well pure rigidity centralizer to be lowered to resistance excessive, and elastic centralizer is because its external diameter changes limitedly, the effect of setting upright is not fine.
Summary of the invention
The utility model provides a kind of combined type centralizer, solves the problem in the background technology.
A kind of combined type centralizer mainly is made up of upper support cover 1, spring 2, righting strip 3 and lower support cover 4.Spring 2 and righting strip 3 are between upper support cover 1 and lower support cover 4.Righting strip 3 is made by elastomeric material, and righting strip 3 external surfaces are covered with the wear-resisting drag reduction material of one deck.Some righting strips 3 two ends and upper support cover 1, lower support cover 4 are respectively flexible connection, as utilize connections such as pin or hinge.Any end of spring 2 is fixed on upper support cover 1 or the lower support cover 4, and the other end is a free end.Centralizer is sleeved on the sleeve pipe tubing string or logger is sent on the tubing string, and centralizer internal diameter and tubing string external diameter have certain interval, and centralizer and tubing string form and be slidingly matched.
Major advantage of the present utility model is: the utility model utilizes wear-resisting drag reduction material special on the righting strip 3 can effectively fall low friction resistance, by the cooperate external diameter that can according to borehole status regulate righting strip 3 of spring 2 with righting strip 3, improve and set upright effect, guarantee that sleeve pipe or logging tool are placed in the middle, reduce the generation of complex accident.In addition, be slidingly matched because centralizer and tubing string form, it is descending that centralizer chance card does not influence tubing string.When tubing string go downwards to box cupling and centralizer form cooperates after, can change the external diameter unfreezing of righting strip 3 by extruding righting strip 3, perhaps the external diameter of pressurization increase centralizer can be repaired the borehole wall.
Description of drawings
Fig. 1 the utility model structural representation
Fig. 2 the utility model sectional drawing
Specific embodiments
The utility model is described in more detail below in conjunction with accompanying drawing.
A kind of combined type centralizer as shown in Figure 1 and Figure 2 mainly is made up of upper support cover 1, spring 2, righting strip 3 and lower support cover 4.Spring 2 and righting strip 3 are between upper support cover 1 and lower support cover 4.Righting strip 3 is made by elastomeric material, and righting strip 3 external surfaces are covered with the wear-resisting drag reduction material of one deck.Some righting strips 3 two ends and upper support cover 1, lower support cover 4 are respectively flexible connection, as utilize connections such as pin or hinge.Any end of spring 2 is fixed on upper support cover 1 or the lower support cover 4, and the other end is a free end.Centralizer is sleeved on the sleeve pipe tubing string or logger is sent on the tubing string, and centralizer internal diameter and tubing string external diameter have certain interval, and centralizer and tubing string form and be slidingly matched.
Its embodiment is: the utility model is solid according to special wells such as oil gas field horizontal well, Multilateral Wells, completion or logging operation needs, can directly be sleeved on the sleeve pipe tubing string or send into the appropriate location of tubing string.When tubing string is lowered at need, centralizer under the effect of external force, thereby in position can change external diameter guarantee tubing string and or logger be lowered to smoothly and placed in the middle.
Claims (1)
1. a combined type centralizer mainly is made up of upper support cover (1), spring (2), righting strip (3) and lower support cover (4), and spring (2) and righting strip (3) are positioned between upper support cover (1) and the lower support cover (4); It is characterized in that: righting strip (3) is made by elastomeric material, and righting strip (3) external surface is covered with the wear-resisting drag reduction material of one deck; Some righting strips (3) two ends and upper support cover (1), lower support cover (4) are respectively flexible connection; Any end of spring (2) is fixed on upper support cover (1) or the lower support cover (4), and the other end is a free end; Centralizer internal diameter and tubing string external diameter have certain interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201819326U CN201110139Y (en) | 2007-11-16 | 2007-11-16 | Combined centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201819326U CN201110139Y (en) | 2007-11-16 | 2007-11-16 | Combined centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110139Y true CN201110139Y (en) | 2008-09-03 |
Family
ID=39894669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201819326U Expired - Fee Related CN201110139Y (en) | 2007-11-16 | 2007-11-16 | Combined centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110139Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513208A (en) * | 2015-09-15 | 2017-03-22 | 江苏图博可特曙光涂层有限公司 | Automatic centering device |
| CN107299833A (en) * | 2017-07-06 | 2017-10-27 | 中国石油大学(北京) | A kind of Casing Detection leak source apparatus and method |
| CN107965273A (en) * | 2017-11-30 | 2018-04-27 | 王红军 | A kind of stability height and the strong petroleum casing pipe of anti-pressure ability |
-
2007
- 2007-11-16 CN CNU2007201819326U patent/CN201110139Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513208A (en) * | 2015-09-15 | 2017-03-22 | 江苏图博可特曙光涂层有限公司 | Automatic centering device |
| CN107299833A (en) * | 2017-07-06 | 2017-10-27 | 中国石油大学(北京) | A kind of Casing Detection leak source apparatus and method |
| CN107965273A (en) * | 2017-11-30 | 2018-04-27 | 王红军 | A kind of stability height and the strong petroleum casing pipe of anti-pressure ability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090109 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Patentee Correct: Western Drilling Kelamayi Drilling Technology Institute False: Western drilling Kelamayi Drilling Technology Research Institute Number: 5 Page: 812 Volume: 25 |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20090109 |
|
| ERR | Gazette correction |
Free format text: CORRECT: PATENTEE; FROM: WEST KELAMAYI DRILLING CRAFT RESEARCH INSTITUTE TO: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INSTITUTE |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20161116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |