CN206625821U - Double ball seat fracturing sliding bushs - Google Patents
Double ball seat fracturing sliding bushs Download PDFInfo
- Publication number
- CN206625821U CN206625821U CN201720288719.9U CN201720288719U CN206625821U CN 206625821 U CN206625821 U CN 206625821U CN 201720288719 U CN201720288719 U CN 201720288719U CN 206625821 U CN206625821 U CN 206625821U
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- CN
- China
- Prior art keywords
- sliding sleeve
- inner sliding
- connecting tube
- ball seat
- lower contact
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Abstract
It the utility model is related to oil field compression fracture sliding sleeve technical field, it is a kind of double ball seat fracturing sliding bushs, it includes top connection, lower contact, the first inner sliding sleeve and the second inner sliding sleeve, top connection and lower contact seal from top to bottom to be fixed together, first inner sliding sleeve is sealed in top connection, and the first inner sliding sleeve is fixedly installed togather by the first shear pin with top connection.The utility model reasonable and compact in structure, it is easy to use, it is in use, the setting of double ball seats, the success rate of the normal bruising of pressure break ball and perforate can be increased substantially, and the safety factor of the fracturing sliding bush of ball seat more single than tradition is high, so as to improve reliability of the present utility model, is advantageous to the progress of whole fracturing reform construction operation.
Description
Technical field
Oil field compression fracture sliding sleeve technical field is the utility model is related to, is a kind of double ball seat fracturing sliding bushs.
Background technology
Fracturing technique is one of major way of current oil reservoir transformation, untraditional reservoir exploitation.At present, it is traditional
In use, after throwing pressure break ball arrival ball seat, if the appearance surface hardness of ball is inadequate, pressure break ball is in bruising for fracturing sliding bush
When, can be compressed, the pressure break club after compression pass through ball seat, or ball diameter less than ball seat minimum diameter when, pressure break ball
It can lead to not realize that bruising cuts pin and moves down ball seat and can not normally open sliding sleeve directly through ball seat, and then can not
Expose clearance hole, reduce perforate success rate, lead to not carry out subsequent construction, influence whole fracturing reform construction operation.
The content of the invention
The utility model provides a kind of double ball seat fracturing sliding bushs, overcomes the deficiency of above-mentioned prior art, it can be effective
It is relatively low to solve the problems, such as that existing fracturing sliding bush has perforate success rate.
The technical solution of the utility model is realized by following measures：A kind of double ball seat fracturing sliding bushs, including it is upper
Joint, lower contact, the first inner sliding sleeve and the second inner sliding sleeve, top connection and lower contact seal be fixed together from top to bottom, and first
Inner sliding sleeve is sealed in top connection, and the first inner sliding sleeve is fixedly installed togather by the first shear pin with top connection, sliding in first
The first ball seat is fixed with set, is circumferentially having the first radial direction clearance hole with corresponding top connection inside and outside the first inner sliding sleeve,
Second inner sliding sleeve is sealed in the lower contact below the first inner sliding sleeve, and the second inner sliding sleeve is fixed by the second shear pin and lower contact pacifies
It is fitted together, second ball seat of the minimum diameter less than the minimum diameter of the first ball seat is fixed with the second inner sliding sleeve, with the
Corresponding lower contact circumferentially has the second radial direction clearance hole inside and outside two inner sliding sleeves.
Here is the further optimization and/or improvements to above-mentioned utility model technical scheme：
The minimum diameter of above-mentioned second ball seat is smaller 1mm than the minimum diameter of the first ball seat to 2mm.
The first limited impression is provided with top connection below above-mentioned first inner sliding sleeve, in the lower outside of the first inner sliding sleeve
The first mounting groove is provided with, the stopping means that can be stuck in the first limited impression is installed in the first mounting groove；Or/and
The second limited impression is provided with lower contact below second inner sliding sleeve, the lower outside of the second inner sliding sleeve is provided with the second peace
Tankage, the stopping means that can be stuck in the second limited impression is installed in the second mounting groove.
Above-mentioned stopping means is split ring.
Above-mentioned lower contact includes connecting tube and lower contact one, and the lower inside of top connection and the upper outside of connecting tube seal
It is fixedly installed togather, the lower inside of connecting tube is fixedly installed togather with the upper outside sealing of lower contact one, in second
Sliding sleeve is fixedly mounted in connecting tube by the second shear pin, and the second limited impression is arranged between the second inner sliding sleeve and lower contact one
Connecting tube on the inside of.
Inside top connection below above-mentioned first shear pin is provided with the first drag reduction groove corresponding with inside and outside the first inner sliding sleeve,
The second drag reduction groove corresponding with inside and outside the second inner sliding sleeve is provided with the inside of the connecting tube below the second shear pin；Or/and even
The upper inner of adapter is provided with positive stop lug boss in first, and the second inner sliding sleeve is fixedly mounted in first the company below positive stop lug boss
In adapter, the lower outside of lower contact one is provided with outer positive stop lug boss, the bottom surface of connecting tube and the top surface phase of outer positive stop lug boss
Support, the connecting tube of both sides is installed with the sealing ring together with least respectively between the second inner sliding sleeve above and below the second shear pin,
The lower inside of connecting tube and the upper outside of lower contact one are threadably secured and are installed together, in connecting tube lower thread section
Side connecting tube and lower contact one between be installed with least one holding screw, the connecting tube above holding screw with
Sealing ring at least together is installed between lower contact one.
Positive stop lug boss in second is provided with above-mentioned top connection, the first inner sliding sleeve is fixedly mounted in second under positive stop lug boss
Side top connection in, above and below the first shear pin the top connection of both sides be installed with respectively between the first inner sliding sleeve together with least
Sealing ring, the sealing ring together with least is installed between the first inner sliding sleeve in the first ball seat, in the second ball seat and
Sealing ring at least together is installed between two inner sliding sleeves；Or/and first ball seat be threadably secured with the first inner sliding sleeve
It is installed together, the second ball seat is threadably secured with the second inner sliding sleeve and is installed together, and is provided with the top of top connection interior
Screw thread or external screw thread, the bottom of lower contact is provided with internal thread or external screw thread.
The utility model reasonable and compact in structure, it is easy to use, its in use, the setting of double ball seats, Neng Gou great
Amplitude improves the success rate of the normal bruising of pressure break ball and perforate, and the safety factor of the fracturing sliding bush of ball seat more single than tradition will
Height, so as to improve reliability of the present utility model, be advantageous to the progress of whole fracturing reform construction operation.
Brief description of the drawings
Accompanying drawing 1 is the main view half section schematic of the best embodiment of the utility model.
Coding in accompanying drawing is respectively：1 is top connection, and 2 be the first inner sliding sleeve, and 3 be the second inner sliding sleeve, and 4 be the first shear pin,
5 be the first ball seat, and 6 be the first radial direction clearance hole, and 7 be the second shear pin, and 8 be the second ball seat, and 9 be the second radial direction clearance hole, and 10 are
First limited impression, 11 be the first mounting groove, and 12 be the second limited impression, and 13 be the second mounting groove, and 14 be split ring, and 15 be company
Adapter, 16 be lower contact one, and 17 be the first drag reduction groove, and 18 be the second drag reduction groove, and 19 be positive stop lug boss in first, and 20 be outer
Positive stop lug boss, 21 be sealing ring, and 22 be holding screw, and 23 be positive stop lug boss in second.
Embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come
Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each part is according to specification
The Butut mode of accompanying drawing 1 is described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description 1
Butut direction determine.
The utility model is further described with reference to embodiment and accompanying drawing：
As shown in Figure 1, this pair of ball seat fracturing sliding bush is including sliding in top connection 1, lower contact, the first inner sliding sleeve 2 and second
Set 3, top connection 1 and lower contact are sealed be fixed together from top to bottom, and the first inner sliding sleeve 2 is sealed in top connection 1, sliding in first
Set 2 is fixedly installed togather by the first shear pin 4 with top connection 1, and the first ball seat 5 is fixed with the first inner sliding sleeve 2, with the
Corresponding top connection 1 circumferentially has the first radial direction clearance hole 6 inside and outside one inner sliding sleeve 2, and the second inner sliding sleeve 3 is sealed in first
In the lower contact of the lower section of sliding sleeve 2, the second inner sliding sleeve 3 is fixedly installed togather by the second shear pin 7 with lower contact, sliding in second
Second ball seat 8 of the minimum diameter less than the minimum diameter of the first ball seat 5 is fixed with set 3, corresponding with inside and outside the second inner sliding sleeve 3
Lower contact circumferentially have the second radial direction clearance hole 9.
When in use, the utility model is connected on oil pipe for the utility model, then G.I.H, to predetermined under oil pipe
Behind position, the perforate operation before pressure break is carried out, puts into pressure break ball, when pumping pressure break ball to the first ball seat 5, if the appearance of pressure break ball
Surface hardness is enough, or pressure break ball diameter be more than the first ball seat 5 minimum diameter when, pressure break ball carry out bruising, reach first and cut
After the pressure value that nail 4 is cut, promote the first inner sliding sleeve 2 and cut the first shear pin 4, the first ball seat 5 promotes the first inner sliding sleeve 2 downward
It is mobile, make to communicate by the first radial direction clearance hole 6 with outside it inside the utility model；If the appearance surface hardness of pressure break ball is not
It is enough, or when the diameter of pressure break ball is less than the minimum diameter of the first ball seat 5, pressure break ball reaches the second ball directly through the first ball seat 5
Seat 8, because the minimum diameter of the second ball seat 8 is less than the minimum diameter of the first ball seat 5, continuing after suppressing, pressure break ball carries out bruising,
After the pressure value for reaching the cutting of the second shear pin 7, promote the second inner sliding sleeve 3 and cut the second shear pin 7, the second ball seat 8 promotes second
Inner sliding sleeve 3 moves down, and makes to communicate by the second radial direction clearance hole 9 with outside it inside the utility model, can subsequently be pressed
Split operation.
By above-mentioned, double ball seats（First ball seat 5, the second ball seat 8）Setting, pressure break ball can increased substantially just
Normal bruising and the success rate of perforate, and the safety factor of the fracturing sliding bush of ball seat more single than tradition is high, so as to improve this reality
With new reliability, be advantageous to the progress of whole fracturing reform construction operation.
Above-mentioned double ball seat fracturing sliding bushs can be made further optimization and/or improvements according to being actually needed：
As needed, the minimum diameter of the second ball seat 8 is smaller 1mm than the minimum diameter of the first ball seat 5 to 2mm.
As shown in Figure 1, the first limited impression 10 is provided with the top connection 1 below the first inner sliding sleeve 2, in first
The lower outside of sliding sleeve 2 is provided with the first mounting groove 11, and the first limited impression 10 can be stuck in by being provided with the first mounting groove 11
Interior stopping means；Or/and the second limited impression 12 is provided with the lower contact below the second inner sliding sleeve 3, it is sliding in second
The lower outside of set 3 is provided with the second mounting groove 13, and the second limited impression 12 can be stuck in by being provided with the second mounting groove 13
Stopping means.
After first inner sliding sleeve 2 moves down, the first mounting groove 11 is set to march at the first limited impression 10, now the first mounting groove
Stopping means in 11 is stretched into the first limited impression 10, makes stopping means while to be stuck in the first mounting groove 11, first spacing recessed
In groove 10, reach the first inner sliding sleeve 2 after preventing from moving down and reset, the first radial direction clearance hole 6 can be kept to be in perforate state, carried
The high reliability of perforate；The operation principle and effect of second limited impression 12 and its corresponding stopping means are similarly.
As shown in Figure 1, stopping means is split ring 14.
When split ring 14 marches to corresponding first limited impression 10 or the second limited impression 12, split ring 14 is flicked and stretched
Enter in corresponding limited impression, it can ensure to the first inner sliding sleeve 2, the position-limiting action of the second inner sliding sleeve 3 after moving down.
As shown in Figure 1, lower contact includes connecting tube 15 and lower contact 1, the lower inside and connecting tube of top connection 1
15 upper outside sealing is fixedly installed togather, and the lower inside of connecting tube 15 and the upper outside sealing of lower contact 1 are solid
Dingan County is fitted together, and the second inner sliding sleeve 3 is fixedly mounted in connecting tube 15 by the second shear pin 7, and the second limited impression 12 is set
The inner side of connecting tube 15 between the second inner sliding sleeve 3 and lower contact 1.
The structure setting that lower contact is made up of connecting tube 15 and lower contact 1, have and be easy to dismount the excellent of its internal structure
Point.
As shown in Figure 1, the inner side of top connection 1 below the first shear pin 4 is provided with corresponding with inside and outside the first inner sliding sleeve 2
First drag reduction groove 17, the inner side of connecting tube 15 below the second shear pin 7 be provided with corresponding second inside and outside the second inner sliding sleeve 3
Drag reduction groove 18；Or/and the upper inner of connecting tube 15 is provided with positive stop lug boss 19 in first, the second inner sliding sleeve 3 fixes peace
In the connecting tube 15 of the lower section of positive stop lug boss in first 19, the lower outside of lower contact 1 is provided with outer positive stop lug boss
20, the bottom surface of connecting tube 15 and the top surface of outer positive stop lug boss 20 offset, the connecting tube 15 and second in second shear pin both sides about 7
Sealing ring 21 at least together, lower inside and the lower contact 1 of connecting tube 15 are installed between inner sliding sleeve 3 respectively
Upper outside, which is threadably secured, to be installed together, the connecting tube 15 above the lower thread section of connecting tube 15 and lower contact 1 it
Between be installed with least one holding screw 22, it is solid between the connecting tube 15 and lower contact 1 above holding screw 22
Dingan County is equipped with sealing ring 21 at least together.
The setting of first drag reduction groove 17, the resistance that the first inner sliding sleeve 2 moves down can be reduced, accelerated under the first inner sliding sleeve 2
Speed is moved, so as to accelerate perforate speed；Second drag reduction groove 18 and the first drag reduction groove 17 are similarly.The setting energy of holding screw 22
Enough improve the degree of being connected firmly between connecting tube 15 and lower contact 1.
As shown in Figure 1, positive stop lug boss 23 in second are provided with top connection 1, the first inner sliding sleeve 2 is fixedly mounted on
In two in the top connection 1 of the lower section of positive stop lug boss 23, divide between the inner sliding sleeve 2 of top connection 1 and first of first shear pin both sides about 4
Sealing ring 21 at least together is not installed with, is installed with the first ball seat 5 between the first inner sliding sleeve 2 together with least
Sealing ring 21, the sealing ring 21 together with least is installed between the second inner sliding sleeve 3 in the second ball seat 8；Or/and the
One ball seat 5 is threadably secured with the first inner sliding sleeve 2 and is installed together, and the second ball seat 8 is threadably secured with the second inner sliding sleeve 3
It is installed together, the top of top connection 1 is provided with internal thread or external screw thread, internal thread or outer is provided with the bottom of lower contact
Screw thread.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal implementation
Effect, can be according to the non-essential technical characteristic of increase and decrease be actually needed, to meet the needs of different situations.
Claims (10)
- A kind of 1. double ball seat fracturing sliding bushs, it is characterised in that including top connection, lower contact, the first inner sliding sleeve and the second inner sliding sleeve, Top connection and lower contact seal from top to bottom to be fixed together, and the first inner sliding sleeve is sealed in top connection, and the first inner sliding sleeve passes through First shear pin is fixedly installed togather with top connection, and the first ball seat is fixed with the first inner sliding sleeve, with the first inner sliding sleeve in Top connection corresponding to outer circumferentially has the first radial direction clearance hole, and the second inner sliding sleeve connects under being sealed in below the first inner sliding sleeve In head, the second inner sliding sleeve is fixedly installed togather by the second shear pin with lower contact, is fixed with the second inner sliding sleeve in minimum Footpath is less than the second ball seat of the minimum diameter of the first ball seat, circumferentially has with corresponding lower contact inside and outside the second inner sliding sleeve Second radial direction clearance hole.
- 2. double ball seat fracturing sliding bushs according to claim 1, it is characterised in that the minimum diameter of the second ball seat is than the first ball The minimum diameter small 1mm to 2mm of seat.
- 3. double ball seat fracturing sliding bushs according to claim 1 or 2, it is characterised in that in the top connection below the first inner sliding sleeve The first limited impression is provided with, the lower outside of the first inner sliding sleeve is provided with the first mounting groove, installed in the first mounting groove There is the stopping means that can be stuck in the first limited impression；Or/and it is provided with the second limit in the lower contact below the second inner sliding sleeve Position groove, is provided with the second mounting groove, second can be stuck in by being provided with the second mounting groove in the lower outside of the second inner sliding sleeve The stopping means of limited impression.
- 4. double ball seat fracturing sliding bushs according to claim 3, it is characterised in that stopping means is split ring.
- 5. double ball seat fracturing sliding bushs according to claim 1 or 2 or 4, it is characterised in that lower contact includes connecting tube with Joint one, the upper outside sealing of the lower inside and connecting tube of top connection are fixedly installed togather, the lower inside of connecting tube Upper outside sealing with lower contact one is fixedly installed togather, and the second inner sliding sleeve is fixedly mounted on connecting tube by the second shear pin Interior, the second limited impression is arranged on the inside of the connecting tube between the second inner sliding sleeve and lower contact one.
- 6. double ball seat fracturing sliding bushs according to claim 3, it is characterised in that lower contact includes connecting tube and lower contact one, The upper outside sealing of the lower inside and connecting tube of top connection is fixedly installed togather, the lower inside of connecting tube and lower contact One upper outside sealing is fixedly installed togather, and the second inner sliding sleeve is fixedly mounted in connecting tube by the second shear pin, and second Limited impression is arranged on the inside of the connecting tube between the second inner sliding sleeve and lower contact one.
- 7. double ball seat fracturing sliding bushs according to claim 5, it is characterised in that the inside top connection below the first shear pin is set The first drag reduction groove corresponding with inside and outside the first inner sliding sleeve is equipped with, is provided with the inside of the connecting tube below the second shear pin and second Second drag reduction groove corresponding to inside and outside inner sliding sleeve；Or/and the upper inner of connecting tube is provided with positive stop lug boss in first, the Two inner sliding sleeves are fixedly mounted in first in the connecting tube below positive stop lug boss, and the lower outside of lower contact one is provided with outer limit Position boss, the bottom surface of connecting tube and the top surface of outer positive stop lug boss offset, above and below the second shear pin in the connecting tube of both sides and second Sealing ring at least together is installed between sliding sleeve respectively, the lower inside and the upper outside of lower contact one of connecting tube are led to Cross to be screwed and be installed together, be installed with least between the connecting tube and lower contact one above connecting tube lower thread section The holding screw of one, the connecting tube above holding screw are installed with the sealing together with least between lower contact one Circle.
- 8. double ball seat fracturing sliding bushs according to claim 6, it is characterised in that the inside top connection below the first shear pin is set The first drag reduction groove corresponding with inside and outside the first inner sliding sleeve is equipped with, is provided with the inside of the connecting tube below the second shear pin and second Second drag reduction groove corresponding to inside and outside inner sliding sleeve；Or/and the upper inner of connecting tube is provided with positive stop lug boss in first, the Two inner sliding sleeves are fixedly mounted in first in the connecting tube below positive stop lug boss, and the lower outside of lower contact one is provided with outer limit Position boss, the bottom surface of connecting tube and the top surface of outer positive stop lug boss offset, above and below the second shear pin in the connecting tube of both sides and second Sealing ring at least together is installed between sliding sleeve respectively, the lower inside and the upper outside of lower contact one of connecting tube are led to Cross to be screwed and be installed together, be installed with least between the connecting tube and lower contact one above connecting tube lower thread section The holding screw of one, the connecting tube above holding screw are installed with the sealing together with least between lower contact one Circle.
- 9. double ball seat fracturing sliding bushs according to claim 1 or 2 or 4 or 6 or 7 or 8, it is characterised in that set in top connection There is positive stop lug boss in second, the first inner sliding sleeve is fixedly mounted in second in the top connection below positive stop lug boss, in the first shear pin The top connection of upper and lower both sides is installed with the sealing ring together with least respectively between the first inner sliding sleeve, in the first ball seat and the Be installed between one inner sliding sleeve at least together sealing ring, be installed between the second ball seat and the second inner sliding sleeve to Few sealing ring together；Or/and first ball seat be threadably secured and be installed together with the first inner sliding sleeve, the second ball seat and Two inner sliding sleeves, which are threadably secured, to be installed together, and the top of top connection is provided with internal thread or external screw thread, in lower contact Bottom is provided with internal thread or external screw thread.
- 10. double ball seat fracturing sliding bushs according to claim 5, it is characterised in that limit convex in second is provided with top connection Platform, the first inner sliding sleeve are fixedly mounted in second in the top connection below positive stop lug boss, above and below the first shear pin both sides on connect Head is installed with the sealing ring together with least respectively between the first inner sliding sleeve, solid between the first ball seat and the first inner sliding sleeve Dingan County is installed with the sealing together with least in the second ball seat equipped with sealing ring at least together between the second inner sliding sleeve Circle；Or/and first ball seat be threadably secured and be installed together with the first inner sliding sleeve, the second ball seat passes through with the second inner sliding sleeve It is screwed and is installed together, the top of top connection is provided with internal thread or external screw thread, is provided with the bottom of lower contact interior Screw thread or external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720288719.9U CN206625821U (en) | 2017-03-23 | 2017-03-23 | Double ball seat fracturing sliding bushs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720288719.9U CN206625821U (en) | 2017-03-23 | 2017-03-23 | Double ball seat fracturing sliding bushs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206625821U true CN206625821U (en) | 2017-11-10 |
Family
ID=60208301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720288719.9U Expired - Fee Related CN206625821U (en) | 2017-03-23 | 2017-03-23 | Double ball seat fracturing sliding bushs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206625821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060907A (en) * | 2017-12-03 | 2018-05-22 | 中国石油集团渤海钻探工程有限公司 | Single ball-type fluid pressure tailpiece hanger |
| CN114427421A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Sand control fracturing integrated device |
-
2017
- 2017-03-23 CN CN201720288719.9U patent/CN206625821U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060907A (en) * | 2017-12-03 | 2018-05-22 | 中国石油集团渤海钻探工程有限公司 | Single ball-type fluid pressure tailpiece hanger |
| CN108060907B (en) * | 2017-12-03 | 2020-02-07 | 中国石油集团渤海钻探工程有限公司 | Single-ball type hydraulic liner hanger |
| CN114427421A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Sand control fracturing integrated device |
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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 |
Granted publication date: 20171110 Termination date: 20210323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |