CN201078197Y - Centralizer for revolving casing cementing - Google Patents
Centralizer for revolving casing cementing Download PDFInfo
- Publication number
- CN201078197Y CN201078197Y CNU2007201746880U CN200720174688U CN201078197Y CN 201078197 Y CN201078197 Y CN 201078197Y CN U2007201746880 U CNU2007201746880 U CN U2007201746880U CN 200720174688 U CN200720174688 U CN 200720174688U CN 201078197 Y CN201078197 Y CN 201078197Y
- Authority
- CN
- China
- Prior art keywords
- bushing
- main body
- centralizer
- roller
- well
- 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
Links
- 239000003129 oil well Substances 0.000 abstract 2
- 238000005096 rolling process Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a rotary bushing centering guide for securing oil well in oil gas field development, and pertains to a tool used in oil wells.. The main body (3) of the utility model is in cylindrical form, several centering guide bars are distributed evenly on the external surface of the main body (3), two rows of roller wheels (1) are arranged on inner side of the main body (3), corresponding to each centering guide bar, and the roller wheels (1) are fixed on two rows of roller shafts (2) on inner side of the main body; the roller shafts (2) are welded firmly in sink slots milled on the main body (3); the minimum inner diameter formed on inner side of the roller wheels (1) is smaller than the inner diameter of the main body of the centering guide but slightly greater than the maximum outer diameter of the bushing (4).. The utility model is a bushing centralizing tool specially used in well cementing work with a rotary bushing, can effectively reduce friction resistance on the rotary bushing and the torque required for turning the bushing, and can effectively protect the well and the bushing body..
Description
Technical field
The utility model relates to oilfield drilling, well cementing operation instrument, particularly horizontal well, directional well well cementing operation and uses centralizer with a kind of revoling tube well cementation, belongs to the downhole tool class.
Background technology
Can improve the cementing displacement efficiency and then improve cementing quality by rotation and upper and lower moving casing, this is verified by theoretical and test already.But but do not applied for a long time.Main cause is that technical condition such as equipment, instrument, sleeve pipe do not match.At present, along with technology progressively advances, variation has taken place in above-mentioned situation.The drilling equipment performance is improved day by day, the also variation day by day of the button-type of sleeve pipe, and the technical condition and the opportunity of adopting moving casing to improve cementing quality arrive.Yet,, when rotating casing, have two problems if adopt rigid casing centralizer commonly used in the past; The one, if the rigid casing centralizer rotates with sleeve pipe, then can cause the pairing well of rigid casing centralizer to enlarge, or even the borehole wall collapse.If two rigid casing centralizers do not rotate with sleeve pipe, will produce sliding friction between sleeve pipe and the rigidity centralizer, the rotation of several hrs friction can not be ignored the wearing and tearing of sleeve pipe continuously.
Summary of the invention
The purpose of this utility model is to provide a kind of casing stabbing board instrument that is exclusively used in the construction of revoling tube cementing well; can effectively reduce the frictional resistance and the needed moment of torsion of rotating casing of rotating casing, and the revoling tube of protection well and sleeve body well cementation centralizer.
Revoling tube well cementation centralizer described in the utility model, body 3 is cylindric, be evenly distributed with some righting strips along centralizer body 3 external surfaces, two row's rollers 1 are all arranged in the inboard of every righting strip correspondence of centralizer body 3, roller 1 is fixed on two row's roller bearings 2 of centralizer body 3 inboards, roller bearing 2 firmly is welded in the deep gouge that mills out on the body 3, and the minimum diameter that the inner side of roller 1 forms is less than the centralizer body internal diameter, and is slightly larger than the maximum outside diameter of sleeve pipe 4.
The beneficial effects of the utility model are: when revoling tube 4, can not drive centralizer with the sleeve pipe of roller 1 contact and rotate.When rotating casing 4, centralizer rotates frictional resistance rolling frictional resistance between the side wheel 1 in sleeve pipe 4 and the centralizer owing to contact it with well, so centralizer can not rotate.This centralizer not only played the effect of setting upright sleeve pipe placed in the middle, but also the sliding friction during with rotating casing 4 change the rolling frictional resistance into.Thereby help reducing the frictional resistance and the needed moment of torsion of rotating casing of rotating casing 4, the protection borehole wall is not scraped and is collapsed when helping the rotating casing cementing well, and protective casing is not worn.
Description of drawings
Fig. 1 the utility model front view
Fig. 2 is that the A-A of Fig. 1 is to sectional view
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described in detail.
As shown in Figure 1, revoling tube well cementation centralizer described in the utility model, body 3 is cylindric, be evenly distributed with some righting strips along centralizer body 3 external surfaces, two row's rollers 1 are all arranged in the inboard of every righting strip correspondence of centralizer body 3, roller 1 is fixed on two row's roller bearings 2 of centralizer body 3 inboards, roller bearing 2 firmly is welded in the deep gouge that mills out on the body 3, the minimum diameter that the inner side of roller 1 forms is less than the centralizer body internal diameter, and is slightly larger than the maximum outside diameter of sleeve pipe 4.
During use, with this Tool Box on sleeve pipe, when revoling tube 4, can not drive centralizer with the sleeve pipe of roller 1 contact and rotate.When rotating casing 4, centralizer rotates frictional resistance rolling frictional resistance between the side wheel 1 in sleeve pipe 4 and the centralizer owing to contact it with well, so centralizer can not rotate.This centralizer promptly played the effect of setting upright sleeve pipe placed in the middle, the sliding friction during again with rotating casing 4 changes the rolling frictional resistance into.Thereby help reducing the frictional resistance and the needed moment of torsion of rotating casing of rotating casing 4, the protection borehole wall is not scraped and is collapsed when helping the rotating casing cementing well, and protective casing is not worn.
Claims (1)
1. a revoling tube is cemented the well and is used centralizer, body (3) is cylindric, be evenly distributed with some righting strips along body (3) external surface, it is characterized in that: two row's rollers (1) are all arranged in the inboard of every righting strip correspondence of body (3), roller (1) is fixed on two inboard row's roller bearings (2) of body (3), roller bearing (2) firmly is welded in the deep gouge that mills out on the body (3), the minimum diameter that the inner side of roller (1) forms is less than the centralizer body internal diameter, and is slightly larger than the maximum outside diameter of sleeve pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201746880U CN201078197Y (en) | 2007-08-23 | 2007-08-23 | Centralizer for revolving casing cementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201746880U CN201078197Y (en) | 2007-08-23 | 2007-08-23 | Centralizer for revolving casing cementing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078197Y true CN201078197Y (en) | 2008-06-25 |
Family
ID=39570259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201746880U Expired - Lifetime CN201078197Y (en) | 2007-08-23 | 2007-08-23 | Centralizer for revolving casing cementing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078197Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720441A (en) * | 2012-07-06 | 2012-10-10 | 常熟市石油固井工具有限公司 | Accessory used for guiding sucker rod |
| CN107762427A (en) * | 2016-08-18 | 2018-03-06 | 中国石油化工股份有限公司 | A kind of rigid centralizer |
| RU230625U1 (en) * | 2024-07-31 | 2024-12-12 | Общество с ограниченной ответственностью "Вилерен" (ООО "Вилерен") | ROLLER CLUTCH |
-
2007
- 2007-08-23 CN CNU2007201746880U patent/CN201078197Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720441A (en) * | 2012-07-06 | 2012-10-10 | 常熟市石油固井工具有限公司 | Accessory used for guiding sucker rod |
| CN102720441B (en) * | 2012-07-06 | 2014-11-05 | 太仓市天合新材料科技有限公司 | Accessory used for guiding sucker rod |
| CN107762427A (en) * | 2016-08-18 | 2018-03-06 | 中国石油化工股份有限公司 | A kind of rigid centralizer |
| RU230625U1 (en) * | 2024-07-31 | 2024-12-12 | Общество с ограниченной ответственностью "Вилерен" (ООО "Вилерен") | ROLLER CLUTCH |
| RU2840391C1 (en) * | 2024-07-31 | 2025-05-22 | Общество с ограниченной ответственностью "Вилерен" (ООО "Вилерен") | Roller coupling and method of works in wells using coupling |
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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 |
|
| 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 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080625 |