CN206429234U - A kind of pulsed fracturing sliding bush - Google Patents
A kind of pulsed fracturing sliding bush Download PDFInfo
- Publication number
- CN206429234U CN206429234U CN201621348586.1U CN201621348586U CN206429234U CN 206429234 U CN206429234 U CN 206429234U CN 201621348586 U CN201621348586 U CN 201621348586U CN 206429234 U CN206429234 U CN 206429234U
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- China
- Prior art keywords
- guiding valve
- pressure break
- control device
- magnetic force
- force control
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Abstract
The utility model is related to a kind of pulsed fracturing sliding bush, belongs to oil drilling tool technical field of mechanical design.The fracturing sliding bush is made up of shell, magnetic force control device, circulating sleeve, circulation guiding valve and pressure break guiding valve, circulating sleeve one is terminated with magnetic block, it is another to be terminated with circulating guiding valve, magnetic force control device is installed in housing, spring is provided between magnetic force control device and circulation guiding valve, circulation guiding valve is connected with pressure break guiding valve axially through rectangular flower keyway, and circulation guiding valve and pressure break guiding valve have been radially arranged shear pin.The sliding sleeve first cuts shear pin in the presence of hydraulic coupling, realize that guiding valve is regular moves up and down for circulation secondly by the power on/off of magnetic force control device, and then reach the size of the control perforation diameter of pulsed, cavity fluid self-oscillation is set to produce pressure break pulse, realize the function of the discontinuous pulse pressure break with pulse effects, so as to which this raising pressure break produces the ability in crack, the purpose of well production increment is realized.
Description
Technical field
The utility model is related to a kind of pulsed fracturing sliding bush, belongs to oil drilling tool technical field of mechanical design.
Background technology
With the increase of China's low-permeability oil deposit proportion, exploitation dynamics is also continued to increase.In existing fracturing technique, no matter
It is conventional hydraulic fracturing, or other pressure break modes such as composite fracturing, although stratum a certain degree of can be pressed off, pressure is realized
Split oil recovery.But, in low-permeability oil deposit, it tends to be difficult to effectively the distance of increase rock fracture and extension pressure break rock seam away from
From raising pressure break produces the ability of rock seam, so as to realize the purpose of well production increment.At present, fracturing technique is more ripe,
Conventional fracturing technique mainly has hydraulic fracturing, liquid medicine pressure break, composite fracturing etc..Although hydraulic fracturing can increase the fracture number of payzone
Amount and length, improve the permeability of oil-gas reservoir payzone, but production decline is very fast after Oil/gas Well pressure, it is difficult to stable yields.Liquid medicine pressure break
Although fracturing effect can be effectively improved, this method in technique be not also at present it is very ripe, infringement to sleeve pipe compared with
Greatly, it is general without using this method progress natural gas reservoir transformation for cased hole completion.Although composite gun perforation can pass through gunpowder explosion
The high energy gas pressure of generation forms many tiny microcracks near wellbore zone, improves near wellbore zone percolation ability, and high
Energy gas can play a part of washing away to perforation tunnel again, the percolation ability of near wellbore zone is further enhanced, still, by
Compaction band and the solid phase blocking formed in perforating process would generally increase formation fluid and flow to the flow resistance of eyelet, so as to drop
Low gas capacity of well.Although above fracturing technique can realize the purpose that pressure break is recovered the oil to a certain extent,
In developing of reservoirs, how particularly Low permeable oil and gas reservoirs effectively improve pressure break and produce the ability of rock seam to increase rock
The permeability of stone, is still the important means that production capacity is improved in oilfield development process.
The content of the invention
The purpose of this utility model is, for above-mentioned the deficiencies in the prior art there is provided one kind it is simple in construction, pass through regulation
The size of preforation tunnel come improve pressure break produce crack ability pulsed fracturing sliding bush.
The technical solution of the utility model is：
A kind of pulsed fracturing sliding bush, it is by shell, magnetic block, magnetic force control device, circulating sleeve, circulation guiding valve and pressure
Split guiding valve composition, it is characterised in that：Circulating sleeve is provided with shell, the threaded one end of circulating sleeve is connected with magnetic block, followed
The other end of ring sleeve is threaded with circulation guiding valve, the circulating sleeve between magnetic block and circulation guiding valve and is provided with magnetic control
Device processed, is provided with spring, the side of circulation guiding valve is provided with pressure break guiding valve, with pressure between magnetic force control device and circulation guiding valve
Split and be provided with perforation on the corresponding shell of guiding valve, be fixedly connected between pressure break guiding valve and shell by shear pin.
It is interruption-like in described housing to be provided with boss A, boss B and boss C.
Projection is provided with the middle part of the circulating sleeve.
Described magnetic force control device is made up of electromagnetism valve chest, coil, metal feeler lever and metal contact piece, the Magnetic Control
Device is arranged between boss A and boss B, and coil is wrapped in the wire casing of electromagnetism valve chest, metal feeler lever and circulating sleeve
Raised thread is connected, metal feeler lever and metal contact piece contact connection.
Described spring is arranged between raised and boss C, spring in its natural state its two ends respectively with it is raised and convex
Platform C contact connections.
Buffer spring is provided between described magnetic block and magnetic force control device.
The beneficial effect of the utility model compared with prior art is：
The pulsed fracturing sliding bush can be moved down in the effect of hydraulic coupling by pressure break guiding valve drive circulation sleeve pipe, so that
Shear pin is cut during circulation sleeve pipe is descending, causes circulation guiding valve and the separation of pressure break guiding valve and opens and penetrate
Hole eyelet, and in the presence of spring and magnetic force control device, enable circulation guiding valve is regular to change cutting for preforation tunnel
Flow area, makes cavity fluid self-oscillation produce pressure break pulse, realizes the function of the pulse pressure break with pulse effects, so that this
The ability that pressure break produces crack is improved, the purpose of well production increment is realized.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, shell, 2, circulating sleeve, 3, magnetic block, 4, circulation guiding valve, 5, magnetic force control device, 6, spring, 7, pressure
Split guiding valve, 8, shear pin, 9, boss A, 10, boss B, 11, boss C, 12, raised, 13, buffer spring, 14, metal feeler lever,
15th, metal contact piece, 16, coil, 17, perforation.
Embodiment
The pulsed fracturing sliding bush is by shell 1, magnetic block 3, magnetic force control device 5, circulating sleeve 2, circulation guiding valve 4 and pressure
Split guiding valve 7 to constitute, circulating sleeve 2 is provided with shell 1, the threaded one end of circulating sleeve 2 is connected with magnetic block 3, circulating sleeve 2
The other end be threaded with circulation guiding valve 4, the middle part of circulating sleeve 2 is provided with projection 12, projection 12 and magnetic force control device 5
Metal feeler lever 14 be threadedly coupled；Magnetic force control device 5 is by electromagnetism valve chest, coil 16, metal feeler lever 14 and metal contact piece 15
Constitute, the magnetic force control device 5 is arranged between boss A9 and boss B10, and coil 16 is wrapped in the wire casing of electromagnetism valve chest,
Metal feeler lever 14 contacts connection with metal contact piece 15.
One end of electromagnetism valve chest is provided with jump ring, to prevent magnetic valve housing axial float, magnetic block 3 and electromagnetism valve casing
Buffer spring 13 is installed, to produce greater impact power to shell 1 during preventing magnetic block 3 from moving right between body, it is to avoid
Cause the bad of equipment.
It is fastened and connected, is led between pressure break guiding valve 7 and housing 1 by rectangular flower keyway between circulation guiding valve 4 and pressure break guiding valve 7
Cross shear pin 8 to connect, be provided with perforation 17 on the corresponding shell 1 of pressure break guiding valve 7, when not working, perforation 17 is slided by pressure break
Valve 7 is blocked, and the fastening and shear pin 8 of the rectangular flower keyway are that, in order to ensure when not starting to work, whole pressure break is slided
Set treats working condition in static.
Interruption-like in housing 1 to be provided with boss A9, boss B10 and boss C11, boss A9 moves right for magnetic block 3
Spacing when dynamic, boss B10 is used for spacing, the following between 12 and boss C11 of projection of the electromagnetism valve chest of magnetic force control device 5
Spring 6, projection 12 and boss C11 difference energy and bullet in its natural state are provided between the outer surface of ring sleeve 2 and the inner side of shell 1
The connection of 6 liang of end in contact of spring, circulating sleeve 2 to when, spring 6 is compressed in the presence of projection 12 is promoted and boss 11 is spacing, is made
Circulation guiding valve 4 moves right to reduce the captured area of perforation 17 with circulating sleeve 2.
Operationally, first in the presence of hydraulic coupling, pressure break guiding valve 7 drives circulation guiding valve 4 and circulating sleeve 2 to move right
Dynamic, when the spacing place of the right lateral of magnetic block 3 to boss A9, shear pin 8 is cut, and pressure break guiding valve 7 and circulation guiding valve 4 are separated,
Perforation 17 is opened, and the spring 6 now compressed will return to nature under elastic force effect, and circulating sleeve is promoted by projection 12
Cylinder 2 is moved to the left so that the metal feeler lever 14 in projection 12 contacts good with the metal contact piece 15 of magnetic force control device 5
Good, so that coil 16 is powered, magnetic valve has magnetic force to attract magnetic block 3 to move right, and promotes circulating sleeve 2 to the right
Motion, makes circulation guiding valve 4 cover partial completion eyelet, and compression spring 6 makes its accumulation of energy simultaneously during this.
Now metal feeler lever 14 is disconnected with metal contact piece 15, and coil 16 is in off-position, and magnetic valve magnetic force disappears, with
This is while spring 6 recovers to nature and promotes circulating sleeve to be moved to the left, and circulation guiding valve 4 gradually decreases the screening to perforation 17
Gear, the eyelet of perforation 17 increase, so comes and goes, and is achieved in adjusting the purpose of the pore size of perforation 17, makes cavity fluid self-excitation
Vibration produces pressure break pulse, and then realizes the function of the pulse pressure break with pulse effects, improves the ability that pressure break produces crack,
Realize the purpose of well production increment.
Claims (6)
1. a kind of pulsed fracturing sliding bush, it is by shell（1）, magnetic block（3）, magnetic force control device（5）, circulating sleeve（2）, follow
Ring guiding valve（4）With pressure break guiding valve（7）Constitute, it is characterised in that：Shell（1）Inside it is provided with circulating sleeve（2）, circulating sleeve（2）
Threaded one end be connected with magnetic block（3）, circulating sleeve（2）The other end be threaded with circulation guiding valve（4）, magnetic block（3）
With circulation guiding valve（4）Between circulating sleeve（2）On magnetic force control device is installed（5）, magnetic force control device（5）Slided with circulation
Valve（4）Between be provided with spring（6）, circulating sleeve（2）Side be provided with pressure break guiding valve（7）, with pressure break guiding valve（7）It is corresponding
Shell（1）On be provided with perforation（17）, pressure break guiding valve（7）And shell（1）Between pass through shear pin（8）It is fixedly connected.
2. a kind of pulsed fracturing sliding bush according to claim 1, it is characterised in that：Described shell（1）Interior is in interval
Shape is provided with boss A（9）, boss B（10）With boss C（11）.
3. a kind of pulsed fracturing sliding bush according to claim 1, it is characterised in that：The circulating sleeve（2）Middle part
It is provided with projection（12）.
4. a kind of pulsed fracturing sliding bush according to claim 1 or 2, it is characterised in that：Described magnetic force control device
（5）By electromagnetism valve chest, coil（16）, metal feeler lever（14）And metal contact piece（15）Constitute, the magnetic force control device（5）Install
In boss A（9）With boss B（10）Between, coil（16）In the wire casing for being wrapped in electromagnetism valve chest, metal feeler lever（14）With circulation
Sleeve（2）Projection（12）Threaded connection, metal feeler lever（14）And metal contact piece（15）Contact connection.
5. a kind of pulsed fracturing sliding bush according to claim 1, it is characterised in that：Described spring（6）Installed in convex
Rise（12）With boss C（11）Between, spring（6）In its natural state its two ends respectively with projection（12）With boss C（11）Contact
Connection.
6. a kind of pulsed fracturing sliding bush according to claim 1, it is characterised in that：Described magnetic block（3）And magnetic force
Control device（5）Between be provided with buffer spring（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348586.1U CN206429234U (en) | 2016-12-09 | 2016-12-09 | A kind of pulsed fracturing sliding bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348586.1U CN206429234U (en) | 2016-12-09 | 2016-12-09 | A kind of pulsed fracturing sliding bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429234U true CN206429234U (en) | 2017-08-22 |
Family
ID=59587021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621348586.1U Expired - Fee Related CN206429234U (en) | 2016-12-09 | 2016-12-09 | A kind of pulsed fracturing sliding bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429234U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368664A (en) * | 2016-12-09 | 2017-02-01 | 长江大学 | Pulse type fracturing sliding sleeve |
| CN111577235A (en) * | 2020-06-30 | 2020-08-25 | 重庆地质矿产研究院 | Self-excited oscillation type pulse hydraulic fracturing tool and method |
| CN111734328A (en) * | 2020-07-08 | 2020-10-02 | 重庆望江鑫祺机械有限公司 | Shearing type releaser |
-
2016
- 2016-12-09 CN CN201621348586.1U patent/CN206429234U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368664A (en) * | 2016-12-09 | 2017-02-01 | 长江大学 | Pulse type fracturing sliding sleeve |
| CN111577235A (en) * | 2020-06-30 | 2020-08-25 | 重庆地质矿产研究院 | Self-excited oscillation type pulse hydraulic fracturing tool and method |
| CN111734328A (en) * | 2020-07-08 | 2020-10-02 | 重庆望江鑫祺机械有限公司 | Shearing type releaser |
| CN111734328B (en) * | 2020-07-08 | 2021-08-24 | 重庆望江鑫祺机械有限公司 | Shearing type releaser |
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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: 20170822 Termination date: 20201209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |