CN206071557U - A kind of anti-sticking ball sliding sleeve hydraulic ejector and fracturing string - Google Patents
A kind of anti-sticking ball sliding sleeve hydraulic ejector and fracturing string Download PDFInfo
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- CN206071557U CN206071557U CN201621053446.1U CN201621053446U CN206071557U CN 206071557 U CN206071557 U CN 206071557U CN 201621053446 U CN201621053446 U CN 201621053446U CN 206071557 U CN206071557 U CN 206071557U
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- sliding sleeve
- top connection
- hydraulic ejector
- sticking ball
- sticking
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Abstract
This utility model provides a kind of anti-sticking ball sliding sleeve hydraulic ejector, including the lower contact of top connection and top connection connection, and top connection housing is provided with nozzle；Outer sliding sleeve is provided with top connection housing, the outer sliding sleeve blocks through hole, inner sliding sleeve is provided with outer sliding sleeve inwall, the inner sliding sleeve is solvable sliding sleeve.This anti-sticking ball sliding sleeve hydraulic ejector that this utility model is provided, inner sliding sleeve dissolving after pressure break of playing ball, it is to avoid card ball phenomenon occurs；Using the anti-sticking ball sliding sleeve hydraulic ejector fracturing string for increasing including multiple inner sliding sleeve internal diameters successively, after pressure break step by step, after each inner sliding sleeve gradually dissolves, anti-sticking ball sliding sleeve hydraulic ejector latus rectums at different levels are consistent, and latus rectum is larger, unimpeded passage is provided with later stage operation to close to adopt.
Description
Technical field
This utility model belongs to hydraulic jetting fracturing technical field, and in particular to a kind of anti-sticking ball sliding sleeve hydraulic ejector and
Fracturing string.
Background technology
At present, gas field staged fracturing of horizontal well mainly has the works such as open hole packer, Self-expandable packer and hydraulic sand blasting
Skill.It is as hydraulic sand blasting staged fracturing technique beam hole pressure break is integrated, low with process is simple, efficiency of construction height, risk
Advantage, is widely applied in oil gas field reservoir reconstruction.
Gas field generally adopts fixed tubular column hydraulic sand blasting fracturing technology at present, and the fracturing string is using the ascending difference of throwing
The ball sealer of size is completing the unlatching of each section of sliding sleeve and transform the isolation of section.With transforming, hop count is also more and more, sliding sleeve
Differential design is also less and less, but in fracturing process, after little differential sliding sleeve often results in pressure, card ball phenomenon is serious, especially
It is the continuous increase with scope of construction item, sliding sleeve increased wear, the phenomenon for the liquid outlet of the stifled previous stages of card ball sealing after pressure occur,
After causing pressure, the row of returning is difficult, has a strong impact on reservoir productivity, and as by sliding sleeve size limitation, the existing tubing string later stage cannot enter
The operations such as row horizontal segment sand washing, gas lift liquid drainage.
Utility model content
The purpose of this utility model is to provide a kind of anti-sticking ball sliding sleeve hydraulic ejector, with solve pressure after card ball, the later stage without
Method carries out a difficult problem for the operations such as sand washing.
The technical solution adopted in the utility model is：
A kind of anti-sticking ball sliding sleeve hydraulic ejector, including top connection and top connection connection lower contact, the top connection and
Lower contact is hollow structure, and on the top connection housing, middle part is provided with through hole, is provided with nozzle in the through hole；
Outer sliding sleeve is provided with the top connection housing, the outer sliding sleeve blocks through hole, the outer sliding sleeve bottom is solid by shear pin
It is scheduled in top connection housing, inner sliding sleeve is installed on the outer sliding sleeve inwall, the inner sliding sleeve is solvable sliding sleeve.
The top connection and lower contact are tubular, are provided with back-up ring in the outer sliding sleeve, and the back-up ring is above inner sliding sleeve
And external diameter is equal in magnitude with inner sliding sleeve external diameter.
The through hole is radial direction screw, and aperture is 4.0～5.5mm, and pressure cap, the nozzle are fixed with the radial direction screw
It is fixed in radial direction screw by pressure cap.
The nozzle is three, is evenly distributed in top connection housing circumference.
The top connection and lower contact are threaded connection.
This utility model additionally provides a kind of anti-sticking ball fracturing string including multiple anti-sticking ball sliding sleeve hydraulic ejectors, institute
State and be sequentially connected by tubing nipple between multiple anti-sticking ball sliding sleeve hydraulic ejectors, first anti-sticking ball sliding sleeve hydraulic ejector
Top connection attachment security give up, upper end of giving up safely is connected with oil pipe, under last anti-sticking ball sliding sleeve hydraulic ejector
Joint is connected with ball-and-seat, screen casing in turn, is oriented to plug wire；
The outer sliding sleeve internal diameter of the plurality of anti-sticking ball sliding sleeve hydraulic ejector is equal, the plurality of anti-sticking ball sliding sleeve waterpower
The inner sliding sleeve internal diameter of ejector increases from first successively to last.
The beneficial effects of the utility model are：
This anti-sticking ball sliding sleeve hydraulic ejector that this utility model is provided, inner sliding sleeve dissolving after pressure break of playing ball, it is to avoid card
Ball phenomenon occurs；Using the anti-sticking ball sliding sleeve hydraulic ejector fracturing string for increasing including multiple inner sliding sleeve internal diameters successively, by
After level pressure break, after each inner sliding sleeve gradually dissolves, anti-sticking ball sliding sleeve hydraulic ejector latus rectums at different levels are consistent, and latus rectum is larger, is
Conjunction is adopted and provides unimpeded passage with later stage operation.
It is described in further details below in conjunction with accompanying drawing.
Description of the drawings
Fig. 1 is this utility model anti-sticking ball sliding sleeve hydraulic ejector structural representation；
Fig. 2 is this utility model anti-sticking ball fracturing string structural representation.
In figure：1st, top connection；2nd, back-up ring；3rd, inner sliding sleeve；4th, outer sliding sleeve；5th, pressure cap；6th, nozzle；7th, shear pin；8th, sealing ring；
9th, lower contact；10th, oil pipe；11st, safety is given up；12nd, anti-sticking ball sliding sleeve hydraulic ejector；13rd, ball-and-seat；14th, screen casing；15th, lead
To plug.
Specific embodiment
Embodiment 1：
Present embodiments provide a kind of anti-sticking ball sliding sleeve hydraulic ejector, including top connection 1, and under top connection 1 connects
Joint 9, the top connection 1 and lower contact 9 are hollow structure, and on 1 housing of the top connection, middle part is provided with through hole, in the through hole
It is provided with nozzle 6；
Outer sliding sleeve 4 is provided with 1 housing of the top connection, the outer sliding sleeve 4 blocks through hole, and 4 bottom of the outer sliding sleeve is by cutting
Nail 7 is fixed in 1 housing of top connection, is provided with inner sliding sleeve 3 on 4 inwall of the outer sliding sleeve, and the inner sliding sleeve 3 is solvable sliding sleeve.
The course of work：Steel ball is thrown in well head, pumping steel ball is seated on inner sliding sleeve 3, interior sliding after pump pressure is increased to certain value
Set 3 drives outer sliding sleeve 4 to move down cuts off shear pin 7, and inner sliding sleeve 3 and outer sliding sleeve 4 are displaced downwardly to place, steel ball, inner sliding sleeve 3 in lower contact 9
And outer sliding sleeve 4 has blocked lower contact 9 together with lower tubular column, while the fluid course for exposing nozzle 6 carries out pressure break to the section.Pressure break
After the completion of a period of time after inner sliding sleeve 3 dissolve, so as to avoid card ball phenomenon occur.
Embodiment 2：
On the basis of embodiment 1, a kind of anti-sticking ball sliding sleeve hydraulic ejector as shown in Figure 1 is present embodiments provided,
The top connection 1 and lower contact 9 are tubular, are provided with back-up ring 2 in the outer sliding sleeve 4, the back-up ring 2 above inner sliding sleeve 3 and
External diameter is equal in magnitude with 3 external diameter of inner sliding sleeve.The effect of back-up ring 2 is to prevent from moving on inner sliding sleeve 3.
The through hole is radial direction screw, and aperture is 4.0～5.5mm, and pressure cap 5, the spray are fixed with the radial direction screw
Mouth 6 is fixed in radial direction screw by pressure cap 5.
In the present embodiment, nozzle 6 is three, is evenly distributed in 1 housing circumference of top connection；Top connection 1 and lower contact 9 are logical
Cross threaded connection.1 bottom of top connection is arranged with sealing ring 8, and 9 inner core of lower contact is taper, is cut after pump pressure is increased to certain value
Disconnected shear pin 7, promotes inner sliding sleeve 3 and outer sliding sleeve 4 to be displaced downwardly at 9 taper inner core of lower contact, and steel ball, inner sliding sleeve 3 and outer sliding sleeve 4 are together
Lower contact 9 has been blocked with lower tubular column.
In the present embodiment, the soluble material of inner sliding sleeve 3 is aluminum alloy materials, by the aluminum of percetage by weight 85%, 5% gallium-aluminum
The Cr compositions of alloy, 5% Bi and 5%, when liquid is come into contact with, meet water soluble, in 70 DEG C of water, ensure in 5 hours pressure-bearing and
Pressure break demand, was completely dissolved in 15 days.
Embodiment 3：
On the basis of 2 anti-sticking ball sliding sleeve hydraulic ejector of embodiment, present embodiments provide a kind of as shown in Figure 2 anti-
Card ball fracturing string, including multiple anti-sticking ball sliding sleeve hydraulic ejectors 12, the plurality of anti-sticking ball sliding sleeve hydraulic ejector 12 it
Between be sequentially connected by tubing nipple, 1 attachment security of top connection of first anti-sticking ball sliding sleeve hydraulic ejector 12 gives up 11, peace
11 upper ends of giving up entirely are connected with oil pipe 10, and the lower contact 9 of last anti-sticking ball sliding sleeve hydraulic ejector 12 is connected with list in turn
Stream valve 13, screen casing 14, guiding plug 15；
4 internal diameter of outer sliding sleeve of the plurality of anti-sticking ball sliding sleeve hydraulic ejector 12 is equal, the plurality of anti-sticking ball sliding sleeve
3 internal diameter of inner sliding sleeve of hydraulic ejector 12 increases from first successively to last.
Implementation process：
Step 1）After fracturing string is linked in sequence, under enter predetermined transformation position；
Step 2）Put into from well head and the first order（It is individual）12 inner sliding sleeve of anti-sticking ball sliding sleeve hydraulic ejector, 3 corresponding ball sealer
And pump, ball to be sealed falls in the first order（It is individual）When on 12 inner sliding sleeve 3 of anti-sticking ball sliding sleeve hydraulic ejector, oil pipe 10 pressurizes, and cuts
The shear pin 7 between outer sliding sleeve 4 and top connection 1 is cut, ball sealer is together dropped down onto down in 9 taper of lower contact with inner sliding sleeve 3, outer sliding sleeve 4
At cylinder, closure lower contact 9 is with lower tubular column；Load fluid is injected from well head, carried out by 12 nozzle 6 of anti-sticking ball sliding sleeve hydraulic ejector
Abrasive perforating；After perforation is finished, sleeve gate is closed, after formation fracture, the injection fracturing fluid of oil pipe 10 carries out main pressure break, annular space
Injection base fluid carries out pressure compensation, completes first paragraph pressure break；
Step 3）According to step 2）Process from the ascending input ball sealer of well head, be sequentially completed the pressure of remaining section respectively
Split；
Step 4）When all interval pressure breaks finish open flow, ball sealer returns out ground, after solvable inner sliding sleeve 3 dissolves, tubing string
Big orifice can be just kept to carry out closing layer discharge opeing, production.
The soluble material of inner sliding sleeve of the present invention 3 is to add rare earth element and by heat treatment, refining tool by magnesium, aluminum
There is the sacrificial anode material of high activity, uniform dissolution.The soluble material at 60 DEG C, with water as medium under, according to the engineering time
Length, by adjust material mixture ratio, adjust dissolution time（Including the first molten time and it is completely dissolved the time）.Its composition and system
Patent of the standby process referring to Application No. 201110140455.X.
The method and structure that various embodiments above is not described in detail belongs to the common knowledge of the industry, does not chat one by one here
State.
Exemplified as above is only, to illustration of the present utility model, not constitute to protection domain of the present utility model
Limit, every design same or analogous with this utility model is belonged within protection scope of the present invention.
Claims (6)
1. a kind of anti-sticking ball sliding sleeve hydraulic ejector, it is characterised in that：Including top connection（1）, and top connection（1）Connect under connection
Head（9）, the top connection（1）And lower contact（9）It is hollow structure, the top connection（1）On housing, middle part is provided with through hole, should
Nozzle is provided with through hole（6）；
The top connection（1）Outer sliding sleeve is provided with housing（4）, the outer sliding sleeve（4）Closure through hole, the outer sliding sleeve（4）Bottom leads to
Cross shear pin（7）It is fixed on top connection（1）In housing, the outer sliding sleeve（4）Inner sliding sleeve is installed on inwall（3）, the inner sliding sleeve（3）
For solvable sliding sleeve.
2. a kind of anti-sticking ball sliding sleeve hydraulic ejector according to claim 1, it is characterised in that：The top connection（1）With
Lower contact（9）It is tubular, the outer sliding sleeve（4）Back-up ring is provided with inside（2）, the back-up ring（2）Located at inner sliding sleeve（3）Top and external diameter
With inner sliding sleeve（3）External diameter is equal in magnitude.
3. a kind of anti-sticking ball sliding sleeve hydraulic ejector according to claim 1, it is characterised in that：The through hole is radial direction spiral shell
Hole, aperture are 4.0～5.5mm, are fixed with pressure cap in the radial direction screw（5）, the nozzle（6）By pressure cap（5）It is fixed on
In radial direction screw.
4. a kind of anti-sticking ball sliding sleeve hydraulic ejector according to claim 1, it is characterised in that：The nozzle（6）For three
It is individual, it is evenly distributed on top connection（1）In housing circumference.
5. a kind of anti-sticking ball sliding sleeve hydraulic ejector according to claim 1, it is characterised in that：The top connection（1）With
Lower contact（9）It is threaded connection.
6. a kind of anti-sticking ball fracturing string including multiple anti-sticking ball sliding sleeve hydraulic ejectors as claimed in claim 1, which is special
Levy and be：The plurality of anti-sticking ball sliding sleeve hydraulic ejector（12）Between be sequentially connected by tubing nipple, first anti-sticking ball
Sliding sleeve hydraulic ejector（12）Top connection（1）Attachment security is given up（11）, give up safely（11）Upper end is connected with oil pipe（10）,
Last anti-sticking ball sliding sleeve hydraulic ejector（12）Lower contact（9）It is connected with ball-and-seat in turn（13）, screen casing（14）, be oriented to
Plug（15）；
The plurality of anti-sticking ball sliding sleeve hydraulic ejector（12）Outer sliding sleeve（4）Internal diameter is equal, the plurality of anti-sticking ball sliding sleeve
Hydraulic ejector（12）Inner sliding sleeve（3）Internal diameter increases from first successively to last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621053446.1U CN206071557U (en) | 2016-09-14 | 2016-09-14 | A kind of anti-sticking ball sliding sleeve hydraulic ejector and fracturing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621053446.1U CN206071557U (en) | 2016-09-14 | 2016-09-14 | A kind of anti-sticking ball sliding sleeve hydraulic ejector and fracturing string |
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| CN206071557U true CN206071557U (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621053446.1U Active CN206071557U (en) | 2016-09-14 | 2016-09-14 | A kind of anti-sticking ball sliding sleeve hydraulic ejector and fracturing string |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130945A (en) * | 2017-07-03 | 2017-09-05 | 西安石油大学 | A kind of rupture disk perforated casing box cupling device |
| CN110080719A (en) * | 2019-03-25 | 2019-08-02 | 中国石油集团长城钻探工程有限公司 | A kind of solvable pressure difference sliding sleeve and horizontal well naked eye staged fracturing construction method |
| CN110748326A (en) * | 2019-09-26 | 2020-02-04 | 中国石油天然气股份有限公司 | Controllable dissolution restrictor and dissolution method and application thereof |
-
2016
- 2016-09-14 CN CN201621053446.1U patent/CN206071557U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130945A (en) * | 2017-07-03 | 2017-09-05 | 西安石油大学 | A kind of rupture disk perforated casing box cupling device |
| CN110080719A (en) * | 2019-03-25 | 2019-08-02 | 中国石油集团长城钻探工程有限公司 | A kind of solvable pressure difference sliding sleeve and horizontal well naked eye staged fracturing construction method |
| CN110748326A (en) * | 2019-09-26 | 2020-02-04 | 中国石油天然气股份有限公司 | Controllable dissolution restrictor and dissolution method and application thereof |
| CN110748326B (en) * | 2019-09-26 | 2022-08-05 | 中国石油天然气股份有限公司 | Controllable dissolution restrictor and dissolution method and application thereof |
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