CN203188932U - Spiral rigid idler wheel resin centering device for sleeve - Google Patents
Spiral rigid idler wheel resin centering device for sleeve Download PDFInfo
- Publication number
- CN203188932U CN203188932U CN2012207461683U CN201220746168U CN203188932U CN 203188932 U CN203188932 U CN 203188932U CN 2012207461683 U CN2012207461683 U CN 2012207461683U CN 201220746168 U CN201220746168 U CN 201220746168U CN 203188932 U CN203188932 U CN 203188932U
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- CN
- China
- Prior art keywords
- sleeve
- spiral
- centering device
- idler wheel
- centralizer
- 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.)
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Abstract
The utility model relates to a spiral rigid idler wheel resin centering device for a sleeve. The spiral rigid idler wheel resin centering device for the sleeve is composed of a centering device shell body (1) and a set screw (2). The spiral rigid idler wheel resin centering device for the sleeve is characterized in that the outer wall of the centering device shell body (1) is composed of spiral convex surfaces and spiral concave surfaces, two idler wheels (5) are arranged on the upper portion and the lower portion of each concave surface respectively, every two idler wheels (5) are arranged at the upper side and the lower side of a center shaft (4) of each concave surface, and every two idler wheels (5) are distributed in a centering mode along each spiral groove. The spiral rigid idler wheel resin centering device for the sleeve has the advantages that the spiral rigid idler wheel resin centering device for the sleeve is installed on the sleeve, and is used for centering the sleeve, centering strips of the spiral rigid idler wheel resin centering device for the sleeve are designed to be spiral, fluid can produce eddies, replacement of slurry is facilitated, the area of circulation is increased, the slurry makes full contact with a well wall, and thus the sleeve can be centered, and is prevented from being clamped in an adhesion mode.
Description
Technical field
The utility model relates to setting upright the effective spiral rigidity of the cover roller resin centralizer device of sleeve pipe.
Background technology
The rigidity centralizer is contained on the sleeve pipe, is used for setting upright sleeve pipe.In inclined shaft and horizontal well, can hold sleeve pipe, make casing centralization, reduce frictional resistance, increase horizontal segment sleeve pipe translational speed, improve cementing quality.The existing sleeve pipe of setting upright mostly is tubular structure, and this structure can not make fluid produce eddy current, is unfavorable for the replacement of mud, reduces the area that circulates, and can not make mud contact the borehole wall fully, can not make casing centralization, the sticking card of sleeve pipe occurs.
Summary of the invention
The purpose of this utility model provides a kind of replacement that is conducive to mud, increases the circulation area, and mud contacts the borehole wall fully, thereby makes casing centralization, prevents the effective spiral rigidity of the cover roller resin centralizer device of the sticking card of sleeve pipe.
The purpose of this utility model is to realize like this, overlap effective spiral rigidity roller resin centralizer device, formed by centralizer housing and dog screw, it is characterized in that: centralizer housing outer arm is to be made of spiral male and female face, two rollers have been located one on the other at concave surface, roller is at the upper-lower position of concave surface central axis, and roller distributes between two parties along helicla flute.
Described centralizer case material is resin.
Between described two rollers dog screw is arranged.
The internal diameter of described centralizer housing 142 and 182mm between, external diameter is at 210mm, length is at 150 ± 1mm.
The utility model has the advantages that: the rigidity centralizer is contained on the sleeve pipe, is used for setting upright sleeve pipe.Its righting strip is designed to helical form, can make fluid produce eddy current, is conducive to the replacement of mud, increases the circulation area, and mud contacts the borehole wall fully, thereby makes casing centralization, prevents the sticking card of sleeve pipe.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the utility model example structure schematic diagram;
Among the figure, 1, the centralizer housing; 2, dog screw; 3, convex-concave helical form; 4, central axis; 5, roller.
The specific embodiment
As shown in Figure 1, overlap effective spiral rigidity roller resin centralizer device, formed by centralizer housing 1 and dog screw 2, it is characterized in that: centralizer housing 1 outer arm is to be made of spiral male and female face, two rollers 5 have been located one on the other at concave surface, roller 5 is at the upper-lower position of concave surface central axis 4, and roller 5 distributes between two parties along helicla flute.Centralizer housing 1 material is resin.Between two rollers 5 dog screw 2 is arranged.The internal diameter of centralizer housing 1 142 and 182mm between, external diameter is at 210mm, length is at 150 ± 1mm.
The internal diameter of the centralizer housing 1 of present embodiment is at 142 mm ± 0.2 mm, and external diameter is at 210mm, and length is at 150 ± 1mm.
As shown in Figure 1, overlap effective spiral rigidity roller resin centralizer device, formed by centralizer housing 1 and dog screw 2, it is characterized in that: centralizer housing 1 outer arm is to be made of spiral male and female face, two rollers 5 have been located one on the other at concave surface, roller 5 is at the upper-lower position of concave surface central axis 4, and roller 5 distributes between two parties along helicla flute.Centralizer housing 1 material is resin.Between two rollers 5 dog screw 2 is arranged.The internal diameter of centralizer housing 1 is in 182 mm ± 0.2, and external diameter is at 210mm, and length is at 150 ± 1mm.
The effective spiral rigidity of the cover roller resin centralizer device that what embodiment 1 provided in the utility model is 5 1/2 " the effective spiral rigidity of cover roller resin centralizer device, what embodiment 2 provided is 7 ".Mounting method of the present utility model is: unclamp jackscrew and will overlap effective spiral rigidity roller resin centralizer device and be enclosed within sleeve shell, select correct position and tighten jackscrew to get final product, with sleeve pipe access tube string.
The setting of casing construction operation rolling wheel centralizer that the utility model can be widely used in horizontal well or high angle hole is set upright two row's rollers laterally is housed on the rib, and this centralizer roller axis is vertical with borehole axis.When sleeve pipe enters lower curved section, make big section sleeve body not be close to the low limit of well on the one hand, friction area reduces; On the other hand, because the rolling of roller, the sliding friction when making conventional setting of casing becomes rolling friction, thereby significantly reduces the coefficient of friction resistance between sleeve pipe and the borehole wall, makes sleeve pipe go into well smoothly.
Claims (4)
1. overlap effective spiral rigidity roller resin centralizer device, formed by centralizer housing (1) and dog screw (2), it is characterized in that: centralizer housing (1) outer arm is to be made of spiral male and female face, two rollers (5) have been located one on the other at concave surface, roller (5) is at the upper-lower position of concave surface central axis (4), and roller (5) distributes between two parties along helicla flute.
2. the effective spiral rigidity of cover according to claim 1 roller resin centralizer device, it is characterized in that: described centralizer housing (1) material is resin.
3. the effective spiral rigidity of cover according to claim 1 roller resin centralizer device is characterized in that: dog screw (2) is arranged between described two rollers (5).
4. the effective spiral rigidity of cover according to claim 1 roller resin centralizer device is characterized in that: the internal diameter of described centralizer housing (1) 142 and 182mm between, external diameter is at 210mm, length is at 150 ± 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207461683U CN203188932U (en) | 2012-12-31 | 2012-12-31 | Spiral rigid idler wheel resin centering device for sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207461683U CN203188932U (en) | 2012-12-31 | 2012-12-31 | Spiral rigid idler wheel resin centering device for sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203188932U true CN203188932U (en) | 2013-09-11 |
Family
ID=49105798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207461683U Expired - Lifetime CN203188932U (en) | 2012-12-31 | 2012-12-31 | Spiral rigid idler wheel resin centering device for sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203188932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032032A (en) * | 2012-12-31 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Helical rigid roller resin centralizer for casings |
-
2012
- 2012-12-31 CN CN2012207461683U patent/CN203188932U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032032A (en) * | 2012-12-31 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Helical rigid roller resin centralizer for casings |
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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: 20130911 |
|
| CX01 | Expiry of patent term |