CN204024575U - A kind of rotary type top packer for tail pipe - Google Patents
A kind of rotary type top packer for tail pipe Download PDFInfo
- Publication number
- CN204024575U CN204024575U CN201420464534.5U CN201420464534U CN204024575U CN 204024575 U CN204024575 U CN 204024575U CN 201420464534 U CN201420464534 U CN 201420464534U CN 204024575 U CN204024575 U CN 204024575U
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- China
- Prior art keywords
- packer
- tail pipe
- shear pin
- slip sleeve
- rotary type
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- Expired - Lifetime
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- 238000012856 packing Methods 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 abstract description 9
- 238000006748 scratching Methods 0.000 abstract description 6
- 230000002393 scratching effect Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of rotary type top packer for tail pipe, comprising: packer body, at this external slip sleeve, tapered sleeve, packing element, adjustment ring and supporting positive cover of being set with from top to bottom of described packer; Wherein: insert in the slips of described slip sleeve the upper end of described tapered sleeve, the first half at described slip sleeve is provided with at least one first shear pin hole; In the Lower Half of described slip sleeve, be provided with at least one second shear pin hole; In described the first shear pin hole, be provided with anti-rotation shear pin, described slip sleeve is connected through described anti-rotation shear pin and described packer body; In described the second shear pin hole, be provided with packing element and set pin, described tapered sleeve sets pin and described slip sleeve is connected through described packing element.Top packer for tail pipe disclosed in the utility model can be guaranteed the High Rotation Speed of tail pipe, does not affect other functions; And guarantee that slips can be by scratching; Both guarantee the needs of rotation, realized again the effect that shear pressure does not improve.
Description
Technical field
The utility model relates to Cementing field of tool, especially a kind of rotary type top packer for tail pipe.
Background technology
At present, domestic new packer liner-hanger hanger technology is relatively ripe, but along with the renewal of technology, and the needs of the special oil and gas pools exploitation such as gas storage, starts the requirement of tail pipe technology and top packer more and more higher.Domestic fewer companies and the oil field unit rotatable technology that begins one's study, but practical application is seldom.The design philosophy of rotatable tail pipe technology is that the tail pipe instrument of well can be rotated in being lowered to process or while cementing the well, and bears certain moment of torsion.Thereby assurance instrument can enter well smoothly, and improve the quality of well cementation.But also the relevant tail pipe instruments such as extension hanger and top packer are had higher requirement simultaneously.Yet existing top packer for tail pipe, when rotated, can not bear larger moment of torsion, namely, generally its moment of torsion that can bear is often less than the moment of torsion of casing threads button, and, while guaranteeing rotation, tend to occur the situation of premature setting and scratching slips.
Therefore, need to invent a kind of novel top packer for tail pipe.
Summary of the invention
The utility model relates to a kind of rotary type top packer for tail pipe, can bear the larger moment of torsion that tail pipe when rotation produces, and can premature setting, can scratching slips.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.
By a kind of rotary type top packer for tail pipe, comprising: packer body, at this external slip sleeve, tapered sleeve, packing element, adjustment ring and supporting positive cover of being set with from top to bottom of described packer; Wherein: insert in the slips of described slip sleeve the upper end of described tapered sleeve, the first half at described slip sleeve is provided with at least one first shear pin hole; In the Lower Half of described slip sleeve, be provided with at least one second shear pin hole; In described the first shear pin hole, be provided with anti-rotation shear pin, described slip sleeve is connected through described anti-rotation shear pin and described packer body; In described the second shear pin hole, be provided with packing element and set pin, described tapered sleeve sets pin and described slip sleeve is connected through described packing element.
Preferably, on described supporting positive cover and described packer body, be provided with half slot, in described half slot, be provided with cylinder or spherical support.
Preferably, described packing element is fixed on described tapered sleeve lower end through packing element retainer ring.
Preferably, described rotary type top packer for tail pipe also comprises adjustment ring, and it is arranged on described packing element retainer ring lower end.
Preferably, described supporting positive cover inserts described adjustment ring lower end.
Preferably, described packing element retainer ring, described packing element and described adjustment ring form black box jointly.
Preferably, described the second shear pin hole is the axial long hole along described slip sleeve.
Preferably, on described slip sleeve, be provided with the first retaining ring;
Preferably, the first half at described tapered sleeve is provided with the second retaining ring;
Preferably, the Lower Half at described tapered sleeve is provided with the 3rd retaining ring.
Preferably, in the upper end of described packer body, be provided with groove boss structure.
Preferably, be circumferentially provided with 3N anti-rotation shear pin on described slip sleeve, wherein N is positive integer.
By technique scheme, a kind of rotary type top packer for tail pipe the utility model proposes at least has following advantages:
1) can guarantee the High Rotation Speed of tail pipe, not affect other functions;
2) adopt tapered sleeve fluting, the form of structure that slips is built-in, guarantees that slips can be by scratching;
3) both guarantee the needs of rotation, realized again the effect that shear pressure does not improve.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of manual, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model rotary type top packer for tail pipe;
Fig. 2 is the structural representation that the first shear pin groove on the utility model packer body and the anti-rotation shear pin on slip sleeve match.
The specific embodiment
For further setting forth the utility model, be to reach technological means and the effect that predetermined utility model object is taked, below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment, structure, feature and effect thereof to a kind of rotary type top packer for tail pipe according to the utility model proposes, be described in detail as follows.In following explanation, the not necessarily same embodiment that different " embodiment " or " embodiment " refer to.In addition, special characteristic, structure or the feature in one or more embodiment can be combined by any suitable form.
A kind of rotary type top packer for tail pipe as depicted in figs. 1 and 2, comprising: packer body 1 is set with slip sleeve 2, tapered sleeve 7, packing element 10, adjustment ring 11 and supporting positive cover 12 from top to bottom outside described packer body 1; Wherein: insert in the slips of described slip sleeve 2 upper end of described tapered sleeve 7, at the first half of described slip sleeve 2, be provided with at least one first shear pin hole, in the Lower Half of described slip sleeve 2, be provided with at least one second shear pin hole; In described the first shear pin hole, be provided with anti-rotation shear pin 3, described slip sleeve 2 is connected with described packer body 1 through described anti-rotation shear pin 3; In described the second shear pin hole, be provided with packing element 10 and set pin 5, described tapered sleeve 7 sets pin 5 through described packing element 10 and is connected with described slip sleeve 2.
Because instrument is in lower going-into-well, the internal diameter size of outer layer sleeve is certain.So the design space of instrument is limited.In rotary type top packer for tail pipe disclosed in the utility model, tapered sleeve 7 cooperatively interacts with slip sleeve 2, tapered sleeve 7 is being provided with groove with the contact position of slip sleeve 2 upper slipses, the slips of slip sleeve 2 is had in most groove that is embedded in tapered sleeve 7, make the maximum outside diameter of slips, much smaller than the external diameter of slip sleeve 2 and tapered sleeve 7.So when rotated, certainly can scratching not arrive slips, and can transmit certain moment of torsion.In order to save space, guarantee that slips is not by scratching simultaneously.
Adopt this structure also can reduce the maximum outside diameter of slip sleeve 2 and tapered sleeve 7, also dwindled the maximum outside diameter of top packer simultaneously.The circulation area at this place while guaranteeing well cementation.
Preferably, on described centering ring 12 and described packer body 1, be provided with half slot, in described half slot, be provided with spherical support.Can realize described supporting positive cover is to relatively rotate on described packer body 1, and axial displacement does not occur, thereby guarantees in tail pipe rotary course; righting effect is no problem; protected packing element 10 and slips, namely made, described packing element 10 and described slips are not easily damaged yet.
During concrete enforcement, described spherical support is ball 13.On described centering ring 12 and described packer body 1, all have the half slot of same diameter, relative position is fixed, and puts into a circle ball 13 after involutory, thereby makes, between described centering ring 12 and described packer body 1, can carry out relative rotation, but on axial location, there is no relative displacement.When tail pipe is rotated, when centering ring 12 meets with obstruction, can not affect whole moment of torsion.Not only can guarantee righting effect, can realize again and protect packing element 10 and slips.
Preferably, the first half of slip sleeve 2 is provided with one and ranked first shear pin hole, and the Lower Half of described slip sleeve 2 is provided with one and ranked second shear pin hole.
Selectively, on described supporting positive cover 12 and described packer body 1, be provided with half slot and be provided with cylindrical support member, as steel wire.
Preferably, described packing element 10 is fixed on described tapered sleeve 7 lower ends through packing element retainer ring 9.
Preferably, described rotary type top packer for tail pipe also comprises adjustment ring 11, and it is arranged on described packing element retainer ring 9 lower ends.
Preferably, described supporting positive cover inserts described adjustment ring 11 lower ends.
Preferably, the common black box that forms of described packing element retainer ring 9, described packing element 10 and described adjustment ring 11.Rely on sealing assembly to realize the sealing function between described packer body 1 and outer layer sleeve.
Preferably, described the second shear pin groove is the axial long hole along described slip sleeve 2.
Preferably, in the upper end of described packer body 1, be provided with groove boss structure.
During concrete enforcement, the main body of described top packer adopts the design of integral type mandrel, and the top of described packer body 1 adopts the engagement type groove boss structure form of petal, after coordinating with corresponding running tool, thereby, can transmit very large moment of torsion.
Preferably, on described slip sleeve 2, be circumferentially provided with 3N described anti-rotation shear pin 3.Thereby described top packer when rotated, on the circumferencial direction of described slip sleeve 2, has 3N described anti-rotation shear pin 3 in work simultaneously, its torque resistant is over 1.2 times of the moment of torsion of setting.Meanwhile, the length by conversion cotter slot on axial location guarantees when setting top packer to only have N anti-rotation shear pin 3 to cut off simultaneously.As shown in Figure 2, the shear pin groove of three different lengths that described packer body 1 is provided with, the length extreme difference of the shear pin groove of these three different lengths is preferably the length of a shear pin diameter.These three shear pin grooves are one group, and it is uniformly distributed 8 groups of totally 24 shear pins around.So both guarantee the anti-rotatory of top packer, do not affected again follow-up normal work.N in the present embodiment is positive integer.
Preferably, on described slip sleeve 2, be provided with the first retaining ring 4;
Preferably, the first half at described tapered sleeve 7 is provided with the second retaining ring 6;
Preferably, the Lower Half at described tapered sleeve 7 is provided with the 3rd retaining ring 8.
The concrete course of action that sets is, after hanger has set, described packer body 1 is motionless, transfers and sends into drilling tool weight, is delivered on described slip sleeve 2, when reaching certain tonnage, described anti-rotation shear pin 3 is cut off, and described slip sleeve 2 is descending together with described tapered sleeve 7, promotes described packing element retainer ring 9 compression packing elements 10, after the swollen envelope of packing element 10 completes, it is motionless that described the 3rd retaining ring 8 can be stuck in setting position by packing element 10 and tapered sleeve 7.Continue to transfer drilling tool, described anti-rotation shear pin 3 is cut off, and described slip sleeve 2 is descending, and described slips crawls into tapered sleeve 7 tops, and with outer field sleeve pipe engagement, travel direction sets, and described the first retaining ring 4 is stuck in described slip sleeve 2 to set place.Thereby complete the whole process that sets.
Wherein, the effect of described retaining ring is to guarantee that component can only move downwards, can not make progress, after the weight that prevents from sending into drilling tool is removed, and described packing element 10 or described slips resilience.Impact seals and sets effect.
In rotation, to send into drilling tool and slowly rotate, the engaging tooth that intersects by running tool with described top packer A place, transfers torque on described packer body 1, then going down.Meanwhile, between described slip sleeve 2 and described packer body 1, by the effect of 3N described anti-rotation shear pin 3, carry out transmitting torque.Between described slip sleeve 2 and described tapered sleeve 7, by described packing element, set pin 5 transmitting torques.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a rotary type top packer for tail pipe, is characterized in that, comprising:
Packer body, at this external slip sleeve, tapered sleeve, packing element, adjustment ring and supporting positive cover of being set with from top to bottom of described packer;
Wherein:
Insert in the slips of described slip sleeve the upper end of described tapered sleeve, at the first half of described slip sleeve, is provided with at least one first shear pin hole; In the Lower Half of described slip sleeve, be provided with at least one second shear pin hole;
In described the first shear pin hole, be provided with anti-rotation shear pin, described slip sleeve is connected through described anti-rotation shear pin and described packer body;
In described the second shear pin hole, be provided with packing element and set pin, described tapered sleeve sets pin and described slip sleeve is connected through described packing element.
2. rotary type top packer for tail pipe according to claim 1, is characterized in that,
On described supporting positive cover and described packer body, be provided with half slot, in described half slot, be provided with cylinder or spherical support.
3. rotary type top packer for tail pipe according to claim 1, is characterized in that,
Described packing element is fixed on described tapered sleeve lower end through packing element retainer ring.
4. rotary type top packer for tail pipe according to claim 3, is characterized in that,
Also comprise adjustment ring, it is arranged on described packing element retainer ring lower end.
5. rotary type top packer for tail pipe according to claim 4, is characterized in that,
Described supporting positive cover inserts described adjustment ring lower end.
6. rotary type top packer for tail pipe according to claim 4, is characterized in that,
Described packing element retainer ring, described packing element and described adjustment ring form black box jointly.
7. according to the rotary type top packer for tail pipe described in any one in claim 1 to 6, it is characterized in that,
Described the second shear pin hole is the axial long hole along described slip sleeve.
8. according to the rotary type top packer for tail pipe described in any one in claim 1 to 6, it is characterized in that,
On described slip sleeve, be provided with the first retaining ring;
The first half at described tapered sleeve is provided with the second retaining ring;
Lower Half at described tapered sleeve is provided with the 3rd retaining ring.
9. according to the rotary type top packer for tail pipe described in any one in claim 1 to 6, it is characterized in that,
In the upper end of described packer body, be provided with groove boss structure.
10. according to the rotary type top packer for tail pipe described in any one in claim 1 to 6, it is characterized in that,
On described slip sleeve, be circumferentially provided with 3N anti-rotation shear pin, wherein N is positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464534.5U CN204024575U (en) | 2014-08-14 | 2014-08-14 | A kind of rotary type top packer for tail pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464534.5U CN204024575U (en) | 2014-08-14 | 2014-08-14 | A kind of rotary type top packer for tail pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024575U true CN204024575U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420464534.5U Expired - Lifetime CN204024575U (en) | 2014-08-14 | 2014-08-14 | A kind of rotary type top packer for tail pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337665A (en) * | 2015-07-06 | 2017-01-18 | 天津统晟石油科技有限公司 | High temperature high difficulty well acid fracturing packer |
| CN111119785A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Packer and drilling string comprising same |
-
2014
- 2014-08-14 CN CN201420464534.5U patent/CN204024575U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337665A (en) * | 2015-07-06 | 2017-01-18 | 天津统晟石油科技有限公司 | High temperature high difficulty well acid fracturing packer |
| CN106337665B (en) * | 2015-07-06 | 2019-07-26 | 盐城市鑫源石化机械有限公司 | Packer for the high-leveled and difficult well acidizing pressure break of high temperature |
| CN111119785A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Packer and drilling string comprising same |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |