CN205858272U - Self-rebounding ball seat - Google Patents
Self-rebounding ball seat Download PDFInfo
- Publication number
- CN205858272U CN205858272U CN201620653493.3U CN201620653493U CN205858272U CN 205858272 U CN205858272 U CN 205858272U CN 201620653493 U CN201620653493 U CN 201620653493U CN 205858272 U CN205858272 U CN 205858272U
- Authority
- CN
- China
- Prior art keywords
- fixing screw
- funnel
- ball
- urceolus
- ball seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 210000001109 blastomere Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model provides a self-rebounding ball seat, include the body and locate this internal a plurality of set screw, this internal upper portion is big-end-up's funnel, and the lower surface center of this funnel is equipped with the fluid passage who runs through the body bottom, the entity annular part of funnel lower surface is equipped with a plurality of set screw holes the same with set screw quantity about central symmetry, set screw passes through set screw hole and this body coupling, set screw's top is higher than the sealing line that fracturing ball and funnel contacted at least 10 mm. The self-rebounding ball seat provided by the utility model is provided with the locking and rebounding devices, so that the reliability of the self-rebounding ball seat can be ensured, the automatic separation of a fracturing ball and the ball seat is realized, and the ball seat ball clamping risk is eliminated; the fixing screw can be made of degradable materials, can be automatically degraded under specific underground conditions, and reduces the retention of tools in the well.
Description
Technical field
This utility model belongs to petroleum-gas fiedl reservoir multi-section multi-layer renovation technique field, is specifically related to a kind of from rebound seat.
Background technology
The ball-throwing type multilamellar many employings of multistage fracturing tool " ball seat+pressure break ball " seals structure, sphere and ball seat surface and forms line
The advantages such as sealing, reach the sealing of fracturing tool central passage, have simple in construction, cost is relatively low, and pressure-bearing is reliable.
But pressure break ball bears elevated pressures on ball seat when being typically due to pressure break, when holding high pressure, contact site produces slight squeezing
Compressive strain, causes ball seat card ball, and after pressure, pressure break ball can not be pushed open, in making ball seat by simple dependence reservoir pressure the last period from ball seat
Channel blockage.As used solubilized ball, dissolution conditions is typically more strict, and dissolution time is longer, affects discharge opeing effect.
Utility model content
The purpose of this utility model is to overcome drawbacks described above present in prior art, it is provided that a kind of from rebound seat, energy
Implementation tool internal channel closure in fracturing process, and seal reliable, pressure break complete after pressure break ball 9 can automatically, be rapidly separated
Ball seat.
To this end, this utility model provides a kind of from rebound seat, including body be located at intrinsic multiple fixing spiral shell
Nail, described body internal upper part is up big and down small funnel, the lower surface center of this funnel be provided with run through body bottom portion fluid lead to
Road, the closed circle part of described funnel lower surface is provided with the multiple fixing spiral shells identical with fixing screw number about centrosymmetry
Nail, described fixing screw is connected with body by fixing screw hole, and the top of described fixing screw is higher than pressure break ball and funnel
Seal line at least 10 mm contacted；
Described fixing screw includes rubber stopper, fixing screw urceolus 4, fixing screw inner core 6 and rebounding device, described fixing
Screw urceolus is provided with central through hole, and top is provided with the location shaft shoulder, and described fixing screw urceolus central through hole top is plugged with rubber stopper,
Bottom is connected with fixing screw inner core by fixing screw pin 5, and described rebounding device is positioned at fixing screw by the location shaft shoulder
On urceolus.
The seal line 10-20 mm that the top of described fixing screw contacts with funnel higher than pressure break ball.
Described rebounding device is spring, and described spring interference is socketed on fixing screw urceolus.
Described spring interference is socketed in the magnitude of interference at least 10 mm on fixing screw urceolus.
Described spring is the high-strength spring that material uses 60Si2Mn.
The beneficial effects of the utility model are:
What the first, this utility model provided is this from rebound seat, is provided with locking and rebounding device, it is possible to ensure reflexive
The reliability of marble seat, it is achieved pressure break ball automatically disengages with ball seat, eliminates ball seat card sportsmanship danger；
The second, fix screw and can use degradation material, degraded automatically can be realized under the specified conditions of down-hole, reduce instrument
Retention in well.
It is described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present utility model；
Fig. 2 is partial enlarged drawing at B in Fig. 1；
Fig. 3 is the profile in Fig. 1 at A-A.
In figure: 1, seal line；2, fixing screw hole；3, rubber stopper；4, fixing screw urceolus；5, fixing screw pin；6、
Fixing screw inner core；7, spring；8, fluid passage；9, pressure break ball；10, funnel.
Detailed description of the invention
Embodiment 1:
Present embodiments provide a kind of from rebound seat, including body be located at intrinsic multiple fixing screw, described
Body internal upper part is up big and down small funnel 10, and the lower surface center of this funnel 10 is provided with the fluid passage 8 running through body bottom portion,
The closed circle part of described funnel 10 lower surface is provided with the multiple fixing spiral shells identical with fixing screw number about centrosymmetry
Nail 2, described fixing screw is connected with body by fixing screw hole 2, and the top of described fixing screw is higher than pressure break ball 9 and leakage
Seal line 1 at least 10 mm that bucket 10 contacts；
Described fixing screw includes rubber stopper 3, fixing screw urceolus 4, fixing screw inner core 6 and rebounding device, described solid
Determining screw urceolus 4 and be provided with central through hole, top is provided with the location shaft shoulder, and described fixing screw urceolus 4 central through hole top is plugged with rubber
Plug 3, bottom is connected with fixing screw inner core 6 by fixing screw pin 5, and described rebounding device is positioned at solid by the location shaft shoulder
Determine on screw urceolus 4.
The present embodiment is from rebound seat installation process:
Fixing screw urceolus 4 is connected by the fixing pin pin of φ 5mm with fixing screw inner core 6, and rubber stopper 3 is installed on
Fixing screw urceolus 4 centre bore, is positioned at rebounding device on fixing screw urceolus 4, by consolidating of assembling by the location shaft shoulder
Determine screw insert funnel 10 lower surface closed circle part one at fixing screw hole 2, by rotate by fixing screw lower end
Being threaded into fixing screw hole 2 to be connected with body, the top fixing screw after installing contacts with funnel 10 higher than pressure break ball 9
Seal line 1 at least 10 mm.
Operation principle and process:
To putting into pressure break ball 9 in rebound seat, after pressure break ball 9 enters ball seat, owing to the top of fixing screw is higher than pressure
Seal line 1 at least 10 mm that blastomere 9 contacts with funnel 10, therefore pressure break ball 9 first with fixing screw upper-end contact, pressure
Under the pressure effect of blastomere 9, force fixing threaded hole urceolus to move down trend and fixing threaded hole inner core generation relative motion, thus press
Disconnected fixing screw pin 5, fixing screw urceolus 4 moves down along fixing screw inner core 6, compresses rebounding device simultaneously；Pressure break ball 9 continues
Move down, arrive and ball seat seal line 1, complete the sealing of instrument fluid passage 8.
After pressure break terminates, rebounding device elastic force is more than pressure break ball 9 upper pressure, and fixing threaded hole urceolus and rebounding device are released
Putting, rebounding device promotes and moves on fixing screw, and then promotes shifting in ball sealer unfreezing, flicks pressure break ball 9, instrument fluid passage
8 open, and instrument upper and lower well section connects.Wherein, the rubber stopper 3 in fixing screw is possible to prevent to occur sand setting in pressing crack construction,
The fixing screw urceolus 4 of blocking cannot move down, and affects pressure break ball 9 and departs from ball seat.
Embodiment 2:
On the basis of embodiment 1, present embodiments provide a kind of as shown in Figure 1, 2 from rebound seat, described bounce-back
Device is spring 7, and the interference of described spring 7 is socketed on fixing screw urceolus 4, the magnitude of interference at least 10 mm.
Installation process: fixing screw urceolus 4 is connected by the fixing pin pin of φ 5mm with fixing screw inner core 6, rubber
Plug 3 is installed on fixing screw urceolus 4 centre bore, is loaded from fixing screw inner core 6 one end by spring 7 and is labelled to fixing screw urceolus 4
Lower end, the fixing screw that assembles is inserted funnel 10 lower surface closed circle part one at fixing screw hole 2, by rotation
Turning and fixing screw lower end is threaded into fixing screw hole 2 is connected with body, spring 7 is gone here and there on fixing screw urceolus 4, installs
Rear spring 7 should have the decrement of at least 10mm, the seal line that the top of fixing screw contacts with funnel 10 higher than pressure break ball 9
1 is 10-20 mm.
In the present embodiment, spring 7 is spring 7, and material uses 60Si2Mn.
Work process:
After pressure break ball 9 enters ball seat, first contact with fixing screw, break fixing screw pin 5, fixing screw urceolus 4
Moving down along fixing screw inner core 6, compression compression spring 7 is shunk simultaneously.Pressure break ball 9 continues to move down, and arrives and ball seat seal line 1,
Complete instrument fluid passage 8 to seal.After pressure break terminates, spring 7 elastic force is more than pressure break ball 9 upper pressure, flicks pressure break ball 9,
Instrument fluid passage 8 is opened, and instrument upper and lower well section connects.
Embodiment 3:
On the basis of embodiment 1, present embodiments providing a kind of from rebound seat, described fixing screw uses degradable
Material.Under conditions of meeting intensity, it is ensured that degradable requirement, under the specified conditions of down-hole, realize degraded automatically, reduce work
Tool retention in well.
Described degradation material is made up of the aluminum of percetage by weight 85%, the gallium-aluminium alloy of 5%, the Cr of the Bi of 5% and 5%.
There is bearing capacity high, be reliably completed the closure of instrument internal channel, and seal reliable, in the water of 70 DEG C, the most molten in 15 days
Solve.
In the present embodiment, the closed circle part of funnel 10 lower surface is provided with 4 fixing screw holes 2 about centrosymmetry, as
Shown in Fig. 3, make stress ensure all uniformly pressure break ball 9 is automatic, be rapidly separated ball seat simultaneously, can be used for reservoir multilamellar multistage and changes
Make, meet the demand of quick fluid-discharge.
In sum, what this utility model provided is designed with locking and rebound mechanism from rebound seat, it is possible to ensure reflexive
The reliability of marble seat, critical piece is fixed screw and be have employed degradation material, when reaching certain wellbore conditions, can be in time
Degraded, reduces instrument retention in well.Should have bearing capacity height from rebound seat, be reliably completed the closure of instrument internal channel,
Having sealing reliable, after pressure, pressure break ball 9 is automatic, be rapidly separated the feature of ball seat, can be used for the transformation of reservoir multilamellar multistage, meets fast
The demand of speed discharge opeing.
Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or conventional hands
Section, describes the most one by one.
Exemplified as above is only to illustration of the present utility model, is not intended that protection domain of the present utility model
Limit, within the every and same or analogous design of this utility model belongs to protection domain of the present utility model.
Claims (5)
1. one kind from rebound seat, it is characterised in that: including body and be located at intrinsic multiple fixing screw, described is internal
Top is up big and down small funnel (10), and the lower surface center of this funnel (10) is provided with the fluid passage (8) running through body bottom portion,
The closed circle part of described funnel (10) lower surface is provided with identical with fixing screw number multiple fixing about centrosymmetry
Screw hole (2), described fixing screw is connected with body by fixing screw hole (2), and the top of described fixing screw is higher than pressure break
Seal line (1) at least 10 mm that ball (9) contacts with funnel (10)；
Described fixing screw includes rubber stopper (3), fixing screw urceolus (4), fixing screw inner core (6) and rebounding device, described
Fixing screw urceolus (4) is provided with central through hole, and top is provided with the location shaft shoulder, described fixing screw urceolus (4) central through hole top
Being plugged with rubber stopper (3), bottom is connected with fixing screw inner core (6) by fixing screw pin (5), and described rebounding device is by location
The shaft shoulder is positioned on fixing screw urceolus (4).
One the most according to claim 1 is from rebound seat, it is characterised in that: the top of described fixing screw is higher than pressure break
Seal line (1) the 10-20 mm that ball (9) contacts with funnel (10).
One the most according to claim 1 is from rebound seat, it is characterised in that: described rebounding device is spring (7), described
Spring (7) interference is socketed on fixing screw urceolus (4).
One the most according to claim 3 is from rebound seat, it is characterised in that: described spring (7) interference is socketed in fixing
The magnitude of interference at least 10 mm on screw urceolus (4).
One the most according to claim 3 is from rebound seat, it is characterised in that: described spring (7) is that material uses
The high-strength spring of 60Si2Mn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653493.3U CN205858272U (en) | 2016-06-28 | 2016-06-28 | Self-rebounding ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653493.3U CN205858272U (en) | 2016-06-28 | 2016-06-28 | Self-rebounding ball seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858272U true CN205858272U (en) | 2017-01-04 |
Family
ID=57637549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620653493.3U Withdrawn - After Issue CN205858272U (en) | 2016-06-28 | 2016-06-28 | Self-rebounding ball seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937384A (en) * | 2016-06-28 | 2016-09-14 | 中国石油天然气股份有限公司 | Self-rebounding ball seat |
-
2016
- 2016-06-28 CN CN201620653493.3U patent/CN205858272U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937384A (en) * | 2016-06-28 | 2016-09-14 | 中国石油天然气股份有限公司 | Self-rebounding ball seat |
| CN105937384B (en) * | 2016-06-28 | 2018-06-01 | 中国石油天然气股份有限公司 | Self-rebounding ball seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20180601 |
|
| AV01 | Patent right actively abandoned |