CN206681692U - A kind of tubing string internal cutter - Google Patents
A kind of tubing string internal cutter Download PDFInfo
- Publication number
- CN206681692U CN206681692U CN201720426530.1U CN201720426530U CN206681692U CN 206681692 U CN206681692 U CN 206681692U CN 201720426530 U CN201720426530 U CN 201720426530U CN 206681692 U CN206681692 U CN 206681692U
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- Prior art keywords
- cutter
- main body
- cutter block
- block
- tubing string
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Abstract
This application discloses a kind of tubing string internal cutter, and it includes top connection, main body and the plug being sequentially connected；Cutter seat is provided with the middle part of main body, cutter block is provided with cutter seat；The stretching direction of cutter block is vertical with the axis of main body；Cutter block drive mechanism is provided with the anterior main body of cutter block, cutter block resetting-mechanism is provided with the main body at cutter block rear portion；Cutter block is completed the stretching out of cutter seat by cutter block drive mechanism and cutter block resetting-mechanism or rebounded.The internal cutter of the application is connected to bolt special and bores bottom, and the choke pressure using top connection flow nipple is poor, makes guide way descending, cutter block is under main body axially position, can only be with guide way it is descending protruding radially from the body, with the rotation of cutter, realize the continuous cutting to tubing string；After cutting terminates, in the presence of lower body part spring force, the reset of cutter block is realized, is recovered to body interior；The cutting knife realizes hilted broadsword block radial cuts, and efficiency high, the moment of torsion required for working is small, stable performance.
Description
Technical field
It the utility model is related to oil well kit field, and in particular to a kind of tubing string internal cutter.
Background technology
In workover treatment, after down-hole string is by very big lifting force, tubing string can not be stirred, many times needed
Tubing string is cut off inside tubing string, goes out from the place of cutting off after tubing string on again and repaiies processing.Have sometimes for the top of cutting pipe portion position
Undergauge, and when supporting helicoid hydraulic motor can not provide sufficiently large moment of torsion, work can not normally be cut off using common cutter
Industry.
Utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of tubing string internal cutter, and it has
Effect solves problems of the prior art.
To achieve the above object, the utility model uses following technical scheme：
A kind of tubing string internal cutter, the tubing string internal cutter include top connection, main body and the plug being sequentially connected；Wherein, institute
State and cutter seat is provided with the middle part of main body, cutter block is provided with the cutter seat；The cutter block is stretched out in direction and main body
Axis is vertical；Cutter block drive mechanism is provided with the anterior main body of cutter block, cutter block is provided with the main body at cutter block rear portion and resets machine
Structure；Cutter block is completed the stretching out of cutter seat by the cutter block drive mechanism and the cutter block resetting-mechanism or rebounded.
Further, the cutter block drive mechanism is the guide way being arranged in main body, and guiding is provided with the guide way
Hole, the alignment pin of the cutter block are adapted with the pilot hole.
Further, the cutter block resetting-mechanism includes being arranged on main body internal stop and back-moving spring；Wherein, the block
Rear end is connected with the front end of the guide way, and the front end of block is connected with one end of the back-moving spring, back-moving spring it is another
End is limited in main body by the plug.
Further, flow nipple and flow nipple positioning sleeve are provided with the top connection.
Further, the cutter block is made up of alignment pin and cutter block main body two parts；The front end of the cutter block main body is provided with
Point of a knife.
The utility model has following advantageous effects：
Internal cutter of the present utility model is connected to bolt special and bores bottom, and the choke pressure using top connection flow nipple is poor,
Make guide way descending, cutter block under main body axially position, can only be with guide way it is descending protruding radially from the body, with
The rotation of cutter, realize the continuous cutting to tubing string；After cutting terminates, in the presence of lower body part spring force, cutter block is realized
Reset, be recovered to body interior；The cutting knife realizes hilted broadsword block radial cuts, and efficiency high, the moment of torsion required for working is small, performance
It is stable.
Brief description of the drawings
Fig. 1 is the partial sectional view of the utility model embodiment；
Fig. 2 is the structural representation of the cutter block of the utility model embodiment；
In figure：1- top connections, 2- flow nipples, 3- flow nipples positioning sleeve, 4- main bodys, 5- guide ways, 6- cutter blocks, 6.1- positioning
Pin, 6.2- cutter blocks main body, 6.3- points of a knife, 7- blocks, 8- back-moving springs, 9- plugs, 10- cutteves seat, 11- pilot holes.
Embodiment
Below, refer to the attached drawing, the utility model is more fully illustrated, shown shown in the drawings of of the present utility model
Example property embodiment.However, the utility model can be presented as a variety of multi-forms, it is not construed as being confined to what is described here
Exemplary embodiment.And these embodiments are to provide, so that the utility model is fully and completely, and will be of the present utility model
Scope is fully communicated to one of ordinary skill in the art.
For ease of explanation, space relative terms such as " on ", " under " " left side " " right sides " can be used herein, for saying
The element or feature shown in bright figure is relative to another element or the relation of feature.It should be understood that except in figure
Outside the orientation shown, spatial terminology is intended to include the different azimuth of device in use or operation.If for example, in figure
Device is squeezed, be stated as positioned at other elements or feature " under " element will be located into other elements or feature " on ".Cause
This, exemplary term " under " both upper and lower orientation can be included.Device, which can be positioned otherwise, (to be rotated by 90 ° or is located at
Other orientation), can correspondingly it be explained used herein of the relative explanation in space.
As shown in Figure 1-2, the utility model provides a kind of tubing string internal cutter, and the tubing string internal cutter includes what is be sequentially connected
Top connection 1, main body 4 and plug 9；Wherein, the middle part of main body 4 is provided with cutter seat 10, and cutter block 6 is provided with cutter seat 10；Knife
The stretching direction of block 6 is vertical with the axis of main body 4；Cutter block drive mechanism is provided with the anterior main body 4 of cutter block 6, after cutter block 6
Cutter block resetting-mechanism is provided with the main body 4 in portion；Cutter block 6 is completed from cutter seat by cutter block drive mechanism and cutter block resetting-mechanism
Stretching in 10 is rebounded.
Cutter block drive mechanism is the guide way 5 being arranged in main body 4, and pilot hole 11 is provided with guide way 5, cutter block 6
Alignment pin 6.1 is adapted with pilot hole 11.The front end of pilot hole 11 is straight, and rear end tilts down, and the guide way 5 is in main body 4
Interior feeding, alignment pin 6.1 stretch out in the presence of pilot hole 11 out of cutter seat 10.
Cutter block resetting-mechanism includes being arranged on the internal stop 7 of main body 4 and back-moving spring 8；Wherein, the rear end of block 7 and guiding
The front end connection of body 5, the front end of block 7 are connected with one end of back-moving spring 8, and the other end of back-moving spring 8 is limited by plug 9
In main body 4.
Flow nipple 2 and flow nipple positioning sleeve 3 are provided with top connection 1.
Cutter block 6 is made up of alignment pin 6.1 and the two parts of cutter block main body 6.2；The front end of cutter block main body 6.2 is provided with point of a knife
6.3。
The operation principle of the application is：
Down-hole string cutter of the present utility model is connected to helicoid hydraulic motor bottom of the bottom with pressure guide hole, in screw drill
Have top connection anchor, bottom connection centralizer and tubing string internal cutter, after being lowered into the precut tubing string position in underground with tubing string,
The seated anchor of handling makes cutter axially position in tubing string, and ground pump truck is with certain displacement operation, in the presence of hydraulic coupling
Helicoid hydraulic motor starts rotary work, by the throttling of flow nipple 2, obtains optimal cutting feed speed, tubing string is from inside to outside
Cut off.After cutting terminates, under spring force, guide way 5 is up, and cutter block 6 is withdrawn, and rises to cut tubing string.
It is described above simply to illustrate that the utility model, it is understood that the utility model be not limited to the above implementation
Example, meets the various variants of the utility model thought within the scope of protection of the utility model.
Claims (5)
1. a kind of tubing string internal cutter, it is characterised in that the tubing string internal cutter includes top connection (1), the main body (4) being sequentially connected
With plug (9)；Wherein, cutter seat (10) is provided with the middle part of the main body (4), cutter block is provided with the cutter seat (10)
(6)；The stretching direction of the cutter block (6) is vertical with the axis of main body (4)；Knife is provided with the anterior main body (4) of cutter block (6)
Block drive mechanism, the main body (4) at cutter block (6) rear portion is interior to be provided with cutter block resetting-mechanism；Cutter block (6) passes through the cutter block driving machine
Structure and the cutter block resetting-mechanism are completed the stretching out of cutter seat (10) or rebounded.
2. tubing string internal cutter according to claim 1, it is characterised in that the cutter block drive mechanism is to be arranged on main body
(4) guide way (5) in, pilot hole (11), the alignment pin (6.1) of the cutter block (6) and institute are provided with the guide way (5)
Pilot hole (11) is stated to be adapted.
3. tubing string internal cutter according to claim 2, it is characterised in that the cutter block resetting-mechanism includes being arranged on main body
(4) internal stop (7) and back-moving spring (8)；Wherein, the rear end of the block (7) is connected with the front end of the guide way (5), gear
The front end of block (7) is connected with one end of the back-moving spring (8), and the other end of back-moving spring (8) is limited by the plug (9)
In main body (4).
4. tubing string internal cutter according to claim 1, it is characterised in that be provided with flow nipple (2) on the top connection (1)
And flow nipple positioning sleeve (3).
5. tubing string internal cutter according to claim 1, it is characterised in that the cutter block (6) is by alignment pin (6.1) and knife
Block main body (6.2) two parts are formed；The front end of the cutter block main body (6.2) is provided with point of a knife (6.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720426530.1U CN206681692U (en) | 2017-04-21 | 2017-04-21 | A kind of tubing string internal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720426530.1U CN206681692U (en) | 2017-04-21 | 2017-04-21 | A kind of tubing string internal cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206681692U true CN206681692U (en) | 2017-11-28 |
Family
ID=60403005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720426530.1U Active CN206681692U (en) | 2017-04-21 | 2017-04-21 | A kind of tubing string internal cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206681692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035332A (en) * | 2017-04-21 | 2017-08-11 | 托普威尔石油技术股份公司 | A kind of tubing string internal cutter |
-
2017
- 2017-04-21 CN CN201720426530.1U patent/CN206681692U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035332A (en) * | 2017-04-21 | 2017-08-11 | 托普威尔石油技术股份公司 | A kind of tubing string internal cutter |
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