CN101864912B - Roller type water injection well centering device - Google Patents
Roller type water injection well centering device Download PDFInfo
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- CN101864912B CN101864912B CN2010102263022A CN201010226302A CN101864912B CN 101864912 B CN101864912 B CN 101864912B CN 2010102263022 A CN2010102263022 A CN 2010102263022A CN 201010226302 A CN201010226302 A CN 201010226302A CN 101864912 B CN101864912 B CN 101864912B
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- roller
- water injection
- blind hole
- injection well
- centering device
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Abstract
A roller type water injection well centering device relates to a water injection well centering device. The invention aims to solve the problems that the existing nylon centering device and spring leaf centering device have large contact surface and friction force with the inner wall of the tubing string and the roller centering device has long axial length so as to influence the installation of instruments in the tube. The main body of the centering device comprises a cross sliding plate and two bolt heads which are integrated together, wherein each arm of the cross sliding plate is provided with an installation slot, the long holes on the two side walls are the same and opposite, the bottom surface of each installation slot is provided with a first blind hole, a roller is arranged in a roller slot, the roller is connected with a slide block through a long pin, one roller component is arranged in each installation slot on the cross sliding plate, the two ends of the long pin of the roller component separately penetrate through the corresponding long hole, and a compressed spring is arranged between each first blind hole and each second blind hole. The invention is used for centering the testing instrument and the inner wall of the water injection well when the oilfield water injection well is tested.
Description
Technical field
The present invention relates to a kind of water injection well centering device.
Background technology
In the water injection well in oil fields test process, need guarantee all that many times tester is coaxial with the water injection well tubing string, such as electromagnetism, ultrasonic flowmeter etc.Simultaneously, must limit the length of centralizer to greatest extent, and reduce the friction of centralizer and tubing string inwall in the process of going into the well as far as possible for easy construction.At present, water injection well centering device generally adopts spring leaf centralizer, roller centralizer and axially has spiral fluted nylon centralizer.Wherein nylon centralizer and tubing string inwall contact area are big, friction is big, material cost is higher and for rigidity contacts, the centralizer wear extent greatly, set upright effect after the abrasion and decline to a great extent; Roller centralizer friction is less and for the rigidity contact, and is higher to the pipeline required precision, sets upright weak effect after the abrasion, and axial length is long, and the installation of interior instrument is managed in influence; The spring leaf centralizer has been realized Elastic Contact, but big with the inner-walls of duct contact area, and the friction with the tubing string inwall in the process of going into the well is sliding friction, and frictional force is bigger, influenced the life-span of centralizer, and length is longer.
Summary of the invention
The objective of the invention is for solve existing nylon centralizer and spring leaf centralizer all exist with tubing string inwall contact area greatly, frictional force is bigger; And roller centralizer axial length is long; The problem of the installation of instrument provides a kind of roller type water injection well centering device in the influence pipe.
The present invention includes centralizer main body, four stage clips and four rolling assembly, the centralizer main body is made up of cross sliding plate and two bolt heads, and two bolt heads are symmetricly set on the center of the both sides end face of cross sliding plate; And cross sliding plate and two bolt heads are processed one, and the outer face of each support arm on the cross sliding plate is provided with mounting groove, and mounting groove is divided into two sidewalls with support arm; Each sidewall is provided with a slotted hole, and the slotted hole on corresponding two sidewalls is identical and over against setting, the bottom surface of mounting groove is provided with first blind hole; Each roll wheel assembly is by roller, slide block and have strong market potential and form; One end of slide block is provided with roller groove, the slide block other end be provided with identical with the first blind hole aperture and over against second blind hole, roller is arranged in the roller groove; Be connected through having strong market potential between roller and the slide block; A roll wheel assembly is housed in each mounting groove on the cross sliding plate, and the two ends of having strong market potential on the roll wheel assembly pass the slotted hole corresponding with it respectively, be provided with a stage clip between each first blind hole and second blind hole; And an end of stage clip is arranged in first blind hole, and the other end of stage clip is arranged in second blind hole.
Advantage of the present invention is: one, the present invention makes roller and water injection well inner-walls of duct Elastic Contact through the effect of stage clip, and the rolling friction of roller and water injection well inner-walls of duct greatly reduces the frictional force of centralizer and water injection well inner-walls of duct; The present invention simultaneously since employing be that roller contacts with the water injection well inner-walls of duct and obtains setting upright effect, so axial dimension can reduce greatly, therefore, the present invention has realized low friction, Elastic Contact, the undersized requirement of centralizer.Two, the present invention is low to the inner-walls of duct required precision, and part processing is simple, and in case the appearance wearing and tearing are changed very easily, has guaranteed the reliability of setting upright.Three, light weight of the present invention, compact conformation.Axial length is little, is convenient to the construction debugging, and sectional area does not influence water injection well pipeline inner fluid and passes through less than general centralizer.
Description of drawings
Fig. 1 is an overall structure front view of the present invention, and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the structural front view of centralizer main body 1, and Fig. 4 is the B-B sectional view of Fig. 3, and Fig. 5 is the structural front view of roll wheel assembly 3, and Fig. 6 is the left view of Fig. 5.
The specific embodiment
The specific embodiment one: combine Fig. 1～Fig. 6 that this embodiment is described, this embodiment comprises centralizer main body 1, four stage clips 2 and four rolling assemblies 3, and centralizer main body 1 is made up of cross sliding plate 1-1 and two bolt head 1-2; Two bolt head 1-2 are symmetricly set on the center of the both sides end face of cross sliding plate 1-1; And cross sliding plate 1-1 and two bolt head 1-2 process one, and the outer face of each the support arm 1-1-1 on the cross sliding plate 1-1 is provided with mounting groove 1-1-2, and mounting groove 1-1-2 is divided into two sidewall 1-1-3 with support arm 1-1-1; Each sidewall 1-1-3 is provided with a slotted hole 1-1-4; Slotted hole 1-1-4 on corresponding two sidewall 1-1-3 is identical and over against setting, the bottom surface of mounting groove 1-1-2 is provided with the first blind hole 1-1-5, and each roll wheel assembly 3 is made up of roller 3-1, slide block 3-2 and the 3-3 that has strong market potential; The end of slide block 3-2 is provided with roller groove 3-2-1; The slide block 3-2 other end be provided with identical with the first blind hole 1-1-5 aperture and over against the second blind hole 3-2-2, roller 3-1 is arranged among the roller groove 3-2-1, is connected through the 3-3 that has strong market potential between roller 3-1 and the slide block 3-2; Roller 3-1 can go up around the 3-3 that has strong market potential and rotate; Among each mounting groove 1-1-2 on the cross sliding plate 1-1 roll wheel assembly 3 is housed, and the 3-3 two ends of having strong market potential on the roll wheel assembly 3 pass the slotted hole 1-1-4 corresponding with it respectively, be provided with a stage clip 2 between each the first blind hole 1-1-5 and the second blind hole 3-2-2; And an end of stage clip 2 is arranged among the first blind hole 1-1-5; The other end of stage clip 2 is arranged among the second blind hole 3-2-2, with realize stage clip 2 at work its horizontal level remain unchanged, thereby guarantee stage clip 2 operate as normal.The 3-3 that has strong market potential is radially sliding in two slotted hole 1-1-4 under the effect of stage clip 2, to drive roller 3-1 and water injection well inner-walls of duct Elastic Contact.When the water injection well internal diameter of the pipeline surpasses the maximum diameter of hole that centralizer reliably sets upright, roller 3-1 that replaceable one-tenth diameter is bigger and the slide block that matches with it.
The specific embodiment two: combine Fig. 5 that this embodiment is described, the wheel face of the roller 3-1 of this embodiment and the intersection of end face are arc surface.Design can reduce the contact area of wheel face and the water injection well inner-walls of duct of roller 3-1 like this, thereby has reduced friction.When internal diameter of the pipeline surpasses the maximum diameter of hole that centralizer reliably sets upright, the slide block that is replaced with the bigger roller of diameter and matches with it.Other composition is identical with the specific embodiment one with annexation.
The specific embodiment three: the material of the roller 3-1 of this embodiment is polytetrafluoroethylene (PTFE) or oil-containing nylon.The roller of existing roller centralizer is a rigidity; And contact to the rigidity contact with the water injection well inner-walls of duct, higher to the pipeline required precision, set upright weak effect after the abrasion; Roller 3-1 of the present invention adopts above-mentioned material; Make roller 3-1 contact with the water injection well inner-walls of duct and be non-rigid contact, therefore, roller 3-1 can not damage the water injection well inner-walls of duct.Other composition is identical with the specific embodiment one or 2 with annexation.
Claims (3)
1. roller type water injection well centering device; It is characterized in that: said centralizer comprises centralizer main body (1), four stage clips (2) and four rolling assembly (3); Centralizer main body (1) is made up of cross sliding plate (1-1) and two bolt heads (1-2); Two bolt heads (1-2) are symmetricly set on the center of the both sides end face of cross sliding plate (1-1), and cross sliding plate (1-1) and two bolt heads (1-2) process one, and the outer face of each support arm (1-1-1) on the cross sliding plate (1-1) is provided with mounting groove (1-1-2); Mounting groove (1-1-2) is divided into two sidewalls (1-1-3) with support arm (1-1-1); Each sidewall (1-1-3) is provided with a slotted hole (1-1-4), and the slotted hole (1-1-4) on corresponding two sidewalls (1-1-3) is identical and over against setting, the bottom surface of mounting groove (1-1-2) is provided with first blind hole (1-1-5); Each roll wheel assembly (3) is made up of roller (3-1), slide block (3-2) and have strong market potential (3-3); One end of slide block (3-2) is provided with roller groove (3-2-1), slide block (3-2) other end be provided with identical with first blind hole (1-1-5) aperture and over against second blind hole (3-2-2), roller (3-1) is arranged in the roller groove (3-2-1); Be connected through have strong market potential (3-3) between roller (3-1) and the slide block (3-2); In each mounting groove (1-1-2) on the cross sliding plate (1-1) roll wheel assembly (3) is housed, and (3-3) two ends of having strong market potential on the roll wheel assembly (3) pass the slotted hole corresponding with it (1-1-4) respectively, be provided with a stage clip (2) between each first blind hole (1-1-5) and second blind hole (3-2-2); And an end of stage clip (2) is arranged in first blind hole (1-1-5), and the other end of stage clip (2) is arranged in second blind hole (3-2-2).
2. according to the said roller type water injection well centering device of claim 1, it is characterized in that: the wheel face of said roller (3-1) and the intersection of end face are arc surface.
3. according to claim 1 or 2 said roller type water injection well centering devices, it is characterized in that: the material of said roller (3-1) is polytetrafluoroethylene (PTFE) or oil-containing nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102263022A CN101864912B (en) | 2010-07-14 | 2010-07-14 | Roller type water injection well centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102263022A CN101864912B (en) | 2010-07-14 | 2010-07-14 | Roller type water injection well centering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101864912A CN101864912A (en) | 2010-10-20 |
| CN101864912B true CN101864912B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102263022A Expired - Fee Related CN101864912B (en) | 2010-07-14 | 2010-07-14 | Roller type water injection well centering device |
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| CN (1) | CN101864912B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787590A (en) * | 2011-05-17 | 2012-11-21 | 中国石油化工集团公司 | Hydraulic lifting pile righting guide device for offshore jack-up platform |
| CN107939310A (en) * | 2017-12-25 | 2018-04-20 | 河北鸿凯石油科技有限公司 | A kind of preventing sucker rod from slanting-wear safety device |
| CN109138864B (en) * | 2018-10-19 | 2021-11-19 | 陈永志 | Eccentric wear prevention centralizer for sucker rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385042A (en) * | 1992-08-21 | 1995-01-31 | Clayton Industries | Dynamometer and method for simulating vehicle road load and/or inertial forces while providing compensation for the parasitic losses of the dynamometer |
| US6250394B1 (en) * | 1999-09-23 | 2001-06-26 | Benny Donald Mashburn | Apparatus for assisting the advancement of a work string and method |
| CN2775281Y (en) * | 2004-11-30 | 2006-04-26 | 盘锦金盘科技有限责任公司 | Spin type oil pipe centralizer |
| CN2844221Y (en) * | 2005-12-06 | 2006-12-06 | 东南大学 | Stabilizer |
| CN201043459Y (en) * | 2007-01-11 | 2008-04-02 | 西安通源石油科技股份有限公司 | Perforating tool intermediate joint with full-reducing ball centralizer |
-
2010
- 2010-07-14 CN CN2010102263022A patent/CN101864912B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385042A (en) * | 1992-08-21 | 1995-01-31 | Clayton Industries | Dynamometer and method for simulating vehicle road load and/or inertial forces while providing compensation for the parasitic losses of the dynamometer |
| US6250394B1 (en) * | 1999-09-23 | 2001-06-26 | Benny Donald Mashburn | Apparatus for assisting the advancement of a work string and method |
| CN2775281Y (en) * | 2004-11-30 | 2006-04-26 | 盘锦金盘科技有限责任公司 | Spin type oil pipe centralizer |
| CN2844221Y (en) * | 2005-12-06 | 2006-12-06 | 东南大学 | Stabilizer |
| CN201043459Y (en) * | 2007-01-11 | 2008-04-02 | 西安通源石油科技股份有限公司 | Perforating tool intermediate joint with full-reducing ball centralizer |
Non-Patent Citations (1)
| Title |
|---|
| 吕丰，韩国有.伸缩式滚子扶正器的结构分析与改进.《大庆石油学院学报》.2005,第29卷(第1期), * |
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| CN101864912A (en) | 2010-10-20 |
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Longqiu Inventor after: Song Wenping Inventor after: Xu Ming Inventor after: Chen Huanan Inventor after: Zhang Ruyi Inventor after: Lv Yan Inventor after: Zhang Guangyu Inventor before: Zhang Guangyu Inventor before: Song Wenping Inventor before: Xu Ming Inventor before: Chen Huanan Inventor before: Lv Yan Inventor before: Zhang Ruyi |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG GUANGYU SONG WENPING XU MING CHEN HUANAN LV YAN ZHANG RUYI TO: LI LONGQIU SONG WENPING XU MING CHEN HUANAN ZHANG RUYI LV YAN ZHANG GUANGYU |
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