CN204899841U - Roll formula eccentric rotation float shoe - Google Patents
Roll formula eccentric rotation float shoe Download PDFInfo
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- CN204899841U CN204899841U CN201520571086.3U CN201520571086U CN204899841U CN 204899841 U CN204899841 U CN 204899841U CN 201520571086 U CN201520571086 U CN 201520571086U CN 204899841 U CN204899841 U CN 204899841U
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- fixed cover
- eccentric
- float shoe
- eccentric rotation
- valve
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Abstract
The utility model relates to a highly deviated well and for horizontal well float shoe, in particular to roll formula eccentric rotation float shoe. The fixed cover of wall connection in the device's the casing lower extreme, fixed cover suit is in the eccentric rotation head outside, the overhead end of eccentric rotation is connected the stop collar and is put in fixed through the spacing dress of hitching, installation roller dish between terminal surface and the first outer wall step face of eccentric rotation under the fixed cover, install the roller on the roller dish, the eccentric rotation head can be in fixed cover the free rotation, the first lower extreme of eccentric rotation designs into eccentric ellipsoid form, connect the valve seat on the inner wall of casing upper end, the basket of flowers is connected to valve seat lower extreme, installation valve in the basket of flowers, overlap the shock mount on the valve. The utility model discloses an it is very little to meet the contact frictional force that produces between each part in revolving the rotary die piece when hindering at tub cluster, to eccentric guiding head's not make a difference of rotation, can the free rotation, and improved the rotatory reliability of float shoe, smooth guiding tube ganged up to go into under the barrier to preset position.
Description
Technical field:
The utility model relates to a kind of high angle hole and horizontal well float shoe, particularly a kind of tumbling-type eccentric rotary float shoe.
Background technology:
Float shoe mainly play a part guiding sleeve string smoothly under enter precalculated position and oppositely bear annular space head of liquid to prevent cement paste from returning.At present, the float shoe many employings face contact type be applied in high angle hole and horizontal well rotates float shoe, the rotary module that face contact type rotates float shoe adopts face contact type rotational structure, namely between fixed cover and swivel head without any contact, the end face of two parts directly contacts, so when pipe string is hampered, this contact surface is quite large by frictional force, the spinfunction of float shoe will be caused to lose, thus cannot gang up by guiding tube, can not guiding sleeve smoothly under enter to precalculated position.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of tumbling-type eccentric rotary float shoe, the arrangement achieves the contact-type frictional power produced between each parts when pipe string is hampered in rotary module very little, the rotation of eccentric seeker is not made a difference, can rotate freely, improve the reliability that float shoe rotates, smooth guiding tube string breaks the barriers down to precalculated position.Overcoming existing face contact type, to rotate the moment of torsion needed when float shoe rotates large, and sliding frictional wear is large, can not enter the deficiency to precalculated position smoothly under guiding sleeve.
Technical solution adopted in the utility model is: a kind of tumbling-type eccentric rotary float shoe, comprises housing and fixed cover; Housing lower end inner wall is connected and fixed cover, fixed cover is sleeved on outside eccentric rotary head, eccentric rotary head upper end connects stop collar and is mounted on fixed cover by stop collar, between fixed cover lower surface and eccentric rotary head outer wall step surface, roller dish is installed, roller installed by roller dish, eccentric rotary head can rotate freely in fixed cover, eccentric rotary head lower end is designed to eccentric ellipsoid shape, housing upper end inwall connects valve seat, valve seat lower end connects the gaily decorated basket, install valve in the gaily decorated basket, pocketed springs on valve, valve can seal with valve seat.
The beneficial effects of the utility model are: the contact-type frictional power produced between each parts of the utility model when pipe string is hampered in rotary module is very little, the rotation of eccentric seeker is not made a difference, can rotate freely, improve the reliability that float shoe rotates, smooth guiding tube string breaks the barriers down to precalculated position.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of tumbling-type eccentric rotary float shoe, comprises housing 5 and fixed cover 4, housing 5 lower end inner wall is connected and fixed cover 4, fixed cover 4 is sleeved on outside eccentric rotary head 1, eccentric rotary head 1 upper end connects stop collar and is mounted on fixed cover 4 by stop collar, between fixed cover 4 lower surface and eccentric rotary head 1 outer wall step surface, roller dish 2 is installed, roller dish 2 is installed roller 3, eccentric rotary head 1 can rotate freely in fixed cover 4, eccentric rotary head 1 lower end is designed to eccentric ellipsoid shape, housing 5 upper end inwall connects valve seat 9, valve seat 9 lower end connects the gaily decorated basket 6, in the gaily decorated basket 6, valve 8 is installed, pocketed springs 7 on valve 8, valve 8 can seal with valve seat 9.
Time cased in extended reach well and horizontal well, enter under the utility model guiding sleeve string, when pipe string is hampered, eccentric rotary head 1 can rotate freely, and its eccentric structure can break the barriers by guiding tube string well, moves ahead smoothly.What rotary module of the present utility model adopted is roller contact formula structure, because rolling friction is less than sliding friction, therefore this arrangement enhances the reliability that float shoe rotates compared with face contact type structure.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a tumbling-type eccentric rotary float shoe, comprises housing (5) and fixed cover (4), it is characterized in that: housing (5) lower end inner wall is connected and fixed cover (4), fixed cover (4) is sleeved on eccentric rotary head (1) outside, eccentric rotary head (1) upper end connects stop collar and is mounted on fixed cover (4) by stop collar, roller dish (2) is installed between fixed cover (4) lower surface and eccentric rotary head (1) outer wall step surface, roller dish (2) is installed roller (3), eccentric rotary head (1) can rotate freely in fixed cover (4), eccentric rotary head (1) lower end is designed to eccentric ellipsoid shape, housing (5) upper end inwall connects valve seat (9), valve seat (9) lower end connects the gaily decorated basket (6), in the gaily decorated basket (6), valve (8) is installed, the upper pocketed springs (7) of valve (8), valve (8) can seal with valve seat (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571086.3U CN204899841U (en) | 2015-08-03 | 2015-08-03 | Roll formula eccentric rotation float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571086.3U CN204899841U (en) | 2015-08-03 | 2015-08-03 | Roll formula eccentric rotation float shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204899841U true CN204899841U (en) | 2015-12-23 |
Family
ID=54922027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520571086.3U Active CN204899841U (en) | 2015-08-03 | 2015-08-03 | Roll formula eccentric rotation float shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204899841U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840116A (en) * | 2016-05-05 | 2016-08-10 | 中国石油集团渤海钻探工程有限公司 | Eccentric-type hydraulic rotating guide shoe |
| CN106014311A (en) * | 2016-07-28 | 2016-10-12 | 德州金玉石油机械科技有限公司 | Multifunctional casing pipe guiding device |
| CN107859485A (en) * | 2017-11-21 | 2018-03-30 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
| CN110847858A (en) * | 2019-10-21 | 2020-02-28 | 中国石油天然气股份有限公司 | Double-valve-core rotation guiding type floating shoe device |
-
2015
- 2015-08-03 CN CN201520571086.3U patent/CN204899841U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840116A (en) * | 2016-05-05 | 2016-08-10 | 中国石油集团渤海钻探工程有限公司 | Eccentric-type hydraulic rotating guide shoe |
| CN105840116B (en) * | 2016-05-05 | 2018-02-02 | 中国石油集团渤海钻探工程有限公司 | A kind of centering type waterpower driven rotary guide shoe |
| CN106014311A (en) * | 2016-07-28 | 2016-10-12 | 德州金玉石油机械科技有限公司 | Multifunctional casing pipe guiding device |
| CN107859485A (en) * | 2017-11-21 | 2018-03-30 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
| CN110847858A (en) * | 2019-10-21 | 2020-02-28 | 中国石油天然气股份有限公司 | Double-valve-core rotation guiding type floating shoe device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201010 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right |