CN207988981U - Expansion pipe subsidizes tool assembly - Google Patents
Expansion pipe subsidizes tool assembly Download PDFInfo
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- CN207988981U CN207988981U CN201820788374.8U CN201820788374U CN207988981U CN 207988981 U CN207988981 U CN 207988981U CN 201820788374 U CN201820788374 U CN 201820788374U CN 207988981 U CN207988981 U CN 207988981U
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- annular block
- annular
- expansion
- block
- pipe
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Abstract
The utility model discloses a kind of expansion pipes to subsidize tool assembly, including：Expansion tube is lowered into casing damage section, and expansion cone is provided in the expansion tube, and the expansion cone upper end is connected with hollow drill pipe；Head cover covers the upper port in casing, and the through-hole coaxial with described sleeve pipe is offered on the head cover, and the hollow drill pipe is passed through from the through-hole；Support tube is sheathed on the hollow drill pipe, and is held on the upper surface of the expansion cone, and the top and bottom of the support tube are coaxially connected with the support plate of circular ring shape；Erection device is coaxially spliced by first annular block and the second annular block, and the hollow drill pipe is passed through from the center of the first annular block and the second annular block, and the first annular block is held in the support plate of the support tube upper end.The utility model has the advantages of can preventing stone or lime-ash from falling into expansion cone working face and righting drilling rod.
Description
Technical field
The utility model is related to oil exploration equipment fields.More specifically, the utility model is related to a kind of expansibles
Pipe subsidizes tool assembly.
Background technology
Bulged tube technology is a booming in recent years new technology, it can be applied to drilling well, completion and oil recovery, well workover
Equal operation process.Expandable casing patching technology is the technology being applied at first in actual production, by expansion cone and expansion tube bottom
It constantly buys oil to form high pressure in the emission cavity formed between stifled, pushes expansion cone to move up extrusion expansion pipe, and make expansion pipe outer wall
Suspension sealing device be fixed on impaired set tube wall, casing bad segments are covered with expansion tube, to make oil well re-form
Whole channel.However existing expandable casing patching process inevitably has stone or lime-ash is fallen into expansion tube, once fall on expansion cone
Between expansion tube, expansion cone movement will necessarily scratch expansion tube, and repairing is caused to fail, meanwhile, it is swollen if casing bad segments are deeper
Depth in swollen cone tripping in casing also can be relatively deep, and the drilling rod for connecting expansion cone will be very long, if drilling rod has slight offset, huge
It can make to generate huge moment of flexure on drilling rod under big thrust, cause the accident to damage drilling rod.
Utility model content
One purpose of the utility model is to solve at least the above, and provide the advantages of at least will be described later.
The utility model is to provide there are one purpose a kind of can prevent stone or lime-ash from falling into expansion cone working face, and energy
The expansion pipe of righting drilling rod subsidizes tool assembly.
In order to realize these purposes and other advantages according to the present utility model, a kind of expansion pipe subsidy work is provided
Have component, including：
Expansion tube is lowered into casing damage section, and expansion cone, the expansion cone upper end connection are provided in the expansion tube
There is hollow drill pipe；
Head cover covers the upper port in casing, and the through-hole coaxial with described sleeve pipe is offered on the head cover, described logical
The diameter in hole is more than the outer diameter of the hollow drill pipe, is less than the internal diameter of the expansion tube, the hollow drill pipe is from the through-hole
It passes through；
Support tube, internal diameter are slightly larger than the outer diameter of the hollow drill pipe, and the support tube is sheathed on the hollow drill pipe,
And it is held on the upper surface of the expansion cone, the top and bottom of the support tube are coaxially connected with the support plate of circular ring shape；
Erection device is coaxially spliced by first annular block and the second annular block, the first annular block
Outer diameter that is identical with the second annular internal diameter of block and being slightly larger than the hollow drill pipe, the outer diameter of the first annular block omit
Less than the internal diameter of the expansion tube, the outer diameter of the second annular block is less than the internal diameter of expansion tube, and the hollow drill pipe is from institute
The center for stating first annular block and the second annular block passes through, and the first annular block is held on the support tube upper end
Support plate on, the upper surface of the second annular block is provided with an annular groove coaxial with the second annular block, described
Annular groove, the contour line that the through-hole is projected in the upper surface of the described second annular block fall into the notch of the annular groove
In range, the lower face of the first annular block offer lead to the described second annular block periphery multiple air-flows it is logical
Road, multiple gas channels are around the equiangularly spaced distribution of axis of the first annular block, and multiple gas channels are described
The opening of one annular block lower face is in the support plate contact range of the first annular block and the support tube upper end
Outside.
Preferably, the described second annular block offers an annular ball grooves close to the periphery of first annular block,
The annular ball grooves and the described second annular block are coaxial, and more balls, more rollings are provided in the annular ball grooves
Pearl is rotatablely connected with the described second annular block, and more balls are contacted with the expansion inside pipe wall.
Preferably, the vertical section profile of the annular groove is in horn-like, and the notch of the annular groove is big
Mouth end.
Preferably, the slot bottom of the annular groove is equipped with damping layer.
Preferably, the damping layer is elastic rubber layer.
Preferably, the compression strength of the ball is more than the compression strength of the described second annular block.
The utility model includes at least following advantageous effect：Head cover by being provided with through-hole in well head make stone or
Person's lime-ash can only be fallen within the scope of through-hole, erection device be arranged on hollow drill pipe, and setting can connect in erection device top surface
Receive the annular groove of stone or lime-ash, reaching not only prevents stone or lime-ash from falling into expansion cone working face, but also can righting hollow drill pipe
Purpose, while certain space is separated and formed with support tube between erection device and expansion cone, and plus on erection device
Be provided with multiple gas channels, therefore process moved up in expansion cone, will produce in multiple gas channels gas flowing by expansion cone with
The heat of generation of rubbing between expansion tube effectively passes out.
Part is illustrated to embody by the further advantage, target and feature of the utility model by following, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the side structure schematic diagram of the utility model wherein embodiment.
Specific implementation mode
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and is not instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the utility model.
As shown in Figure 1, the utility model provides a kind of expansion pipe subsidy tool assembly, including：
Expansion tube 1 is lowered into the damaged section of casing 2, is provided with expansion cone 3 in the expansion tube 1, in the expansion cone 3
End is connected with hollow drill pipe 4；
Head cover 5 is covered in offering the through-hole coaxial with described sleeve pipe 2, institute in the upper port of casing 2, the head cover 5
The diameter for stating through-hole is more than the outer diameter of the hollow drill pipe 4, is less than the internal diameter of the expansion tube 1, the hollow drill pipe 4 is from described
It is passed through in through-hole；
Support tube 6, internal diameter are slightly larger than the outer diameter of the hollow drill pipe 4, and the support tube 6 is sheathed on the hollow drill pipe
On 4, and it is held on the upper surface of the expansion cone 3, the top and bottom of the support tube 6 are coaxially connected with the branch of circular ring shape
Support plate；
Erection device is coaxially spliced by first annular block 7 and the second annular block 8, described first annular piece
Body 7 is identical with the internal diameter of the second annular block 8 and is slightly larger than the outer diameter of the hollow drill pipe 4, the first annular block 7
Outer diameter is slightly less than the internal diameter of the expansion tube 1, and the outer diameter of the described second annular block 8 is less than the internal diameter of expansion tube 1, described hollow
Drilling rod 4 is passed through from the center of 7 and second annular block 8 of the first annular block, and the first annular block 7 is held on institute
In the support plate for stating 6 upper end of support tube, it is coaxial with the second annular block 8 that the upper surface of the second annular block 8 is provided with one
Annular groove 9, the annular groove 9, the contour line that the through-hole is projected in the upper surface of the described second annular block 8 falls into
Within the scope of the notch of the annular groove 9, the lower face of the first annular block 7, which offers, leads to the described second annular block
Multiple gas channels 10 of 8 peripheries, axis equiangularly spaced point of the multiple gas channels 10 around the first annular block 7
Cloth, and opening of the multiple gas channels 10 in 7 lower face of first annular block is in the first annular block 7 and institute
Outside the support plate contact range for stating 6 upper end of support tube.
In use, the head cover 5 by being provided with through-hole in well head makes stone or lime-ash to above-described embodiment
It can only fall within the scope of through-hole, erection device is set on hollow drill pipe 4, and setting can receive stone in erection device top surface
Or the annular groove 9 of lime-ash, reaching not only prevents stone or lime-ash from falling into 3 working face of expansion cone, but also the mesh of energy righting hollow drill pipe 4
, while certain space is separated and being formed with support tube 6 between erection device and expansion cone 3, and add and set on erection device
Multiple gas channels 10 are equipped with, therefore process is moved up in expansion cone 3, gas flowing is will produce in multiple gas channels 10 by expansion cone
The heat of generation of rubbing between 3 and expansion tube 1 effectively passes out.
In another embodiment, the described second annular block 8 offers an annular close to the periphery of first annular block 7
11 slot of ball, annular 11 slot of ball and the described second annular block 8 are coaxial, and are provided in 11 slot of the annular ball more
Ball 11, more balls 11 are rotatablely connected with the described second annular block 8, and more balls 11 with the expansion tube 1
Inner wall contacts, and in this way during erection device follows expansion cone 3 to move together, erection device and the contact of expansion tube 1 are just
To be in rolling contact, the frictional resistance of generation greatly reduces.
In another embodiment, the vertical section profile of the annular groove 9 is in horn-like, and the annular groove 9
Notch is big opening end, and such annular groove 9 can receive the area bigger of stone or lime-ash, even if while stone or lime-ash fall to
9 side wall of annular groove can also slide to slot bottom.
In another embodiment, the slot bottom of the annular groove 9 is equipped with damping layer 12, and the damping layer 12 can be sea
Continuous layer either rubber layer, the stone or lime-ash fallen in this way in annular groove 9 are not easy rebound and jump out annular groove 9.
In another embodiment, the damping layer 12 is elastic rubber layer, and elastic rubber layer does not absorb water, and can keep bullet for a long time
Property.
In another embodiment, the compression strength of the ball 11 is more than the compression strength of the described second annular block 8, this
Sample makes ball 11 when by certain pressure, can be for delivery to the second annular block 8, with the elastic shape of the second annular block 8
Become to offset, to keep the circularity of ball 11 so that erection device keeps good with expansion tube 1 always and is in rolling contact.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (6)
1. expansion pipe subsidizes tool assembly, which is characterized in that including：
Expansion tube is lowered into casing damage section, expansion cone is provided in the expansion tube, during the expansion cone upper end is connected with
Empty drilling rod；
Head cover covers the upper port in casing, and the through-hole coaxial with described sleeve pipe is offered on the head cover, the through-hole
Diameter is more than the outer diameter of the hollow drill pipe, is less than the internal diameter of the expansion tube, and the hollow drill pipe is passed through from the through-hole；
Support tube, internal diameter are slightly larger than the outer diameter of the hollow drill pipe, and the support tube is sheathed on the hollow drill pipe, and is put
It is placed in the upper surface of the expansion cone, the top and bottom of the support tube are coaxially connected with the support plate of circular ring shape；
Erection device is coaxially spliced by first annular block and the second annular block, the first annular block and the
The internal diameter of second ring block is identical and is slightly larger than the outer diameter of the hollow drill pipe, and the outer diameter of the first annular block is slightly less than
The internal diameter of the expansion tube, the outer diameter of the second annular block are less than the internal diameter of expansion tube, and the hollow drill pipe is from described the
The center of one annular block and the second annular block passes through, and the first annular block is held on the branch of the support tube upper end
On support plate, the upper surface of the described second annular block is provided with an annular groove coaxial with the second annular block, the annular
Groove, the contour line that the through-hole is projected in the upper surface of the described second annular block fall into the notch range of the annular groove
Interior, the lower face of the first annular block offers the multiple gas channels for leading to the described second annular block periphery, more
A gas channel is around the equiangularly spaced distribution of axis of the first annular block, and multiple gas channels are described first annular
The opening of block lower face is in outside the support plate contact range of the first annular block and the support tube upper end.
2. expansion pipe as described in claim 1 subsidizes tool assembly, which is characterized in that the described second annular block is close
The periphery of first annular block offers an annular ball grooves, and the annular ball grooves and the described second annular block are coaxial,
And more balls are provided in the annular ball grooves, more balls are rotatablely connected with the described second annular block, and more
Ball is contacted with the expansion inside pipe wall.
3. expansion pipe as described in claim 1 subsidizes tool assembly, which is characterized in that the vertical of the annular groove is cut
Facial contour is in horn-like, and the notch of the annular groove is big opening end.
4. expansion pipe as described in claim 1 subsidizes tool assembly, which is characterized in that the slot bottom of the annular groove is spread
Equipped with damping layer.
5. expansion pipe as claimed in claim 4 subsidizes tool assembly, which is characterized in that the damping layer is elastic rubber
Layer.
6. expansion pipe as claimed in claim 2 subsidizes tool assembly, which is characterized in that the compression strength of the ball is big
In the compression strength of the described second annular block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788374.8U CN207988981U (en) | 2018-05-24 | 2018-05-24 | Expansion pipe subsidizes tool assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788374.8U CN207988981U (en) | 2018-05-24 | 2018-05-24 | Expansion pipe subsidizes tool assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207988981U true CN207988981U (en) | 2018-10-19 |
Family
ID=63831194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820788374.8U Active CN207988981U (en) | 2018-05-24 | 2018-05-24 | Expansion pipe subsidizes tool assembly |
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| Country | Link |
|---|---|
| CN (1) | CN207988981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485845A (en) * | 2019-01-29 | 2020-08-04 | 中国石油天然气股份有限公司 | Casing patching device |
-
2018
- 2018-05-24 CN CN201820788374.8U patent/CN207988981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485845A (en) * | 2019-01-29 | 2020-08-04 | 中国石油天然气股份有限公司 | Casing patching device |
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