CN208122776U - A kind of telescopic ball centralizer of oilfield - Google Patents
A kind of telescopic ball centralizer of oilfield Download PDFInfo
- Publication number
- CN208122776U CN208122776U CN201820229802.3U CN201820229802U CN208122776U CN 208122776 U CN208122776 U CN 208122776U CN 201820229802 U CN201820229802 U CN 201820229802U CN 208122776 U CN208122776 U CN 208122776U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- thick portion
- baffle ring
- wall
- housing
- 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
Links
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- Earth Drilling (AREA)
Abstract
The utility model is a kind of telescopic ball centralizer of oilfield, including mandrel, the upper and lower ends of mandrel are separately installed with top connection and lower contact, mandrel between top connection and lower contact is divided into thick portion and thin portion arranged up and down, variable diameter interconnecting piece is equipped between thick portion and thin portion, the thick portion outer wall bottom end of mandrel is equipped with baffle ring, it is plugged with shear pin between baffle ring and the thick portion of mandrel and is realized by shear pin and connects, housing is arranged on the thick portion outer wall of mandrel, housing is between top connection and baffle ring, the outer wall upper and lower ends of housing are evenly distributed in multiple balls and roller respectively.The thick portion outer wall of mandrel is equipped with insertion hole, and baffle ring is equipped with through-hole corresponding with insertion hole, and shear pin is sequentially inserted into the realization connection that inserts in the hole of the through-hole and mandrel of baffle ring.The utility model is applied in combination using ball and roller, and sliding friction is become rolling friction, also can in tubing string bit freezing, above propose the adjustment that position is realized when tonnage is big, decentralization is difficult, easily by meeting the position of card.
Description
Technical field
Using the utility model relates to the technical field of In Oil Field Exploration And Development downhole tool more particularly to a kind of oilfield can
Flexible ball centralizer.
Background technique
Present high angle hole, big dog-leg severity well is more and more, risen in these wells, lower tubular column when, tubing string and casing rub
It is larger to wipe power, increases bit freezing, above mention the problems such as tonnage is big, decentralization is difficult.Roller centralizer used at present can be solved partially
The certainly above problem, but it is undesirable；For this reason, it is necessary to develop the new-type ball righting that new can reducing removes string friction
Device.
Summary of the invention
The utility model aims to solve the problem that the deficiencies in the prior art, and provides a kind of oilfield telescopic ball righting
Device.
The utility model to achieve the above object, using following technical scheme：
A kind of oilfield telescopic ball centralizer, including mandrel, the upper and lower ends of the mandrel are installed respectively
There are top connection and lower contact, the mandrel between the top connection and lower contact is divided into thick portion and thin portion arranged up and down, described thick
Variable diameter interconnecting piece is equipped between portion and thin portion, the thick portion outer wall bottom end of the mandrel is equipped with baffle ring, the baffle ring and the mandrel
Thick portion between be plugged with shear pin and realized by shear pin and connect, housing is arranged on the thick portion outer wall of the mandrel, it is described outer
For set between the top connection and baffle ring, the outer wall upper and lower ends of the housing are evenly distributed in multiple balls and rolling respectively
Column.
The thick portion outer wall of the mandrel is equipped with insertion hole, and the baffle ring is equipped with corresponding with the insertion hole logical
Hole, the shear pin are sequentially inserted into the realization connection that inserts in the hole of the through-hole and mandrel of baffle ring.
The joint face of the top connection and lower contact and the mandrel is equipped with tubing thread and is connected to one by tubing thread
It rises.
The utility model has the beneficial effects that：The utility model is applied in combination using ball and roller, and sliding friction is become
For rolling friction, also can in tubing string bit freezing, above propose the adjustment for realizing position when tonnage is big, decentralization is difficult by cutting shear pin, gently
Pine is by meeting the position blocked.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure：1- mandrel；2- top connection；3- lower contact；4- variable diameter interconnecting piece；5- baffle ring；6- shear pin；7- housing；8- rolling
Pearl；9- roller；
It is described in detail below with reference to the embodiments of the present invention referring to attached drawing.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples：
As shown in Figure 1, a kind of telescopic ball centralizer of oilfield, including mandrel 1, the mandrel 1 up and down
Both ends are separately installed with top connection 2 and lower contact 3, and it is arranged up and down that the mandrel 1 between the top connection 2 and lower contact 3, which divides,
Thick portion and thin portion, are equipped with variable diameter interconnecting piece 4 between the thick portion and thin portion, the thick portion outer wall bottom end of the mandrel 1 is equipped with baffle ring
5, be plugged between the baffle ring 5 and the thick portion of the mandrel 1 shear pin 6 and by shear pin 6 realize connection, the mandrel 1 it is thick
Housing 7 is arranged on portion's outer wall, the housing 7 is between the top connection 2 and baffle ring 5, two above and below the outer wall of the housing 7
End is evenly distributed in multiple balls 8 and roller 9 respectively.
The thick portion outer wall of the mandrel 1 is equipped with insertion hole, and the baffle ring 5 is equipped with corresponding with the insertion hole logical
Hole, the shear pin 6 are sequentially inserted into the realization connection that inserts in the hole of the through-hole and mandrel 1 of baffle ring 5.
The joint face of the top connection 2 and lower contact 3 and the mandrel 1 is equipped with tubing thread and is connected to by tubing thread
Together.
The working principle of the utility model is as follows：
When the put-on and delegated tubing string in well or selection tubing string, the housing 7 on mandrel 1 is contacted on casing wall, is passed through
Ball 8 and the realization of roller 9 are in rolling contact, and the rolling that can be realized axially and radially is applied in combination in ball 8 and roller 9, reaches
Reduce the purpose to rub between tubing string and the borehole wall.When raising tubing string, if meeting card, upper lifting pipe post tonnage is to a timing, and shear pin 6 is not
It can meet with stresses and be cut, housing 7 drives ball 8 and roller 9 to move down into the necking down position of 1 thin portion of mandrel, such ball 8 and rolling
Column 9 can be retracted into inside housing 7, reduce the maximum outside diameter of tool, so that 6 structure of shear pin will not by meeting card position
Generation moves down in advance, only can just shear in the case where reaching certain force, realizes control accurate.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
Improvement directly applies to other occasions, both is within the protection scope of the present invention.
Claims (3)
1. a kind of telescopic ball centralizer of oilfield, including mandrel (1), which is characterized in that the mandrel (1) it is upper
Lower both ends are separately installed with top connection (2) and lower contact (3), the mandrel (1) between the top connection (2) and lower contact (3) point
For thick portion arranged up and down and thin portion, variable diameter interconnecting piece (4) are equipped between the thick portion and thin portion, the thick portion of the mandrel (1)
Outer wall bottom end is equipped with baffle ring (5), and shear pin (6) is plugged between the baffle ring (5) and the thick portion of the mandrel (1) and passes through shear pin
(6) it realizes connection, is arranged with housing (7) on the thick portion outer wall of the mandrel (1), the housing (7) is located at the top connection (2)
Between baffle ring (5), the outer wall upper and lower ends of the housing (7) are evenly distributed in multiple balls (8) and roller (9) respectively.
2. a kind of telescopic ball centralizer of oilfield according to claim 1, which is characterized in that the mandrel
(1) thick portion outer wall is equipped with insertion hole, and the baffle ring (5) is equipped with through-hole corresponding with the insertion hole, the shear pin
(6) it is sequentially inserted into the realization connection that inserts in the hole of the through-hole and mandrel (1) of baffle ring (5).
3. a kind of telescopic ball centralizer of oilfield according to claim 2, which is characterized in that connect on described
The joint face of head (2) and lower contact (3) and the mandrel (1) is equipped with tubing thread and is linked together by tubing thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820229802.3U CN208122776U (en) | 2018-02-09 | 2018-02-09 | A kind of telescopic ball centralizer of oilfield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820229802.3U CN208122776U (en) | 2018-02-09 | 2018-02-09 | A kind of telescopic ball centralizer of oilfield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208122776U true CN208122776U (en) | 2018-11-20 |
Family
ID=64207457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820229802.3U Expired - Fee Related CN208122776U (en) | 2018-02-09 | 2018-02-09 | A kind of telescopic ball centralizer of oilfield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208122776U (en) |
-
2018
- 2018-02-09 CN CN201820229802.3U patent/CN208122776U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20220209 |