CN105507869B - Sliding sleeve switch tubing string - Google Patents
Sliding sleeve switch tubing string Download PDFInfo
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- CN105507869B CN105507869B CN201410504823.8A CN201410504823A CN105507869B CN 105507869 B CN105507869 B CN 105507869B CN 201410504823 A CN201410504823 A CN 201410504823A CN 105507869 B CN105507869 B CN 105507869B
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- sliding sleeve
- pipe nipple
- downstream
- switch
- housing
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Abstract
The present invention relates to a kind of sliding sleeve switch tubing string.The sliding sleeve switch tubing string includes：Coiled tubing, the switch pipe nipple that can be engaged under the 3rd hydraulic coupling with sliding sleeve is provided with coiled tubing, be arranged on switch pipe nipple upstream and under the first hydraulic coupling driving switch pipe nipple be axially moved hydraulic pressure pipe nipple and grappling pipe nipple.Grappling pipe nipple includes the anchor log that can be projected radially outward and be fixedly connected with sliding sleeve under the second hydraulic coupling, and anchor log resets after the second hydraulic coupling is removed；First hydraulic coupling is more than the second hydraulic coupling, and the second hydraulic coupling is more than the 3rd hydraulic coupling.Driving force effectively can effectively be passed to sliding sleeve by the sliding sleeve switch tubing string of the present invention, and the reliability of sliding sleeve switch construction is high.
Description
Technical field
The present invention relates to Oil/gas Well field, more particularly to a kind of sliding sleeve switch tubing string.
Background technology
Horizontal well multistage sliding sleeve staged fracturing technology is a kind of important means of unconventionaloil pool resource exploitation, has structure
Simply, the features such as construction reliability is high.This fracturing technique is widely used in shale gas, hyposmosis payzone, the pressure break of oil sheet
Storey increase design.In the oil gas well mining later stage, such as run into payzone water outlet, selectivity exploitation and again pressure break situations such as, then need tripping in
Sliding sleeve switch tubing string carry out sliding sleeve switch operation, to sliding sleeve selectively close, reach realize bottom water plugging, layering closure test,
The purpose of asking production.
When tripping in switchs tubing string to the progress switching manipulation of horizontal segment sliding sleeve, the rigidity due to switching tubing string is low, flexible big,
Load transfer is extremely difficult, and driving force can not effectively pass to sliding sleeve, it is difficult to realizes the switching manipulation of sliding sleeve.Therefore, it is necessary to
A kind of switch tubing string that driving force can be passed to effectively to sliding sleeve.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of sliding sleeve switch tubing string.The sliding sleeve switch tubing string of the present invention can have
Switch drive power is effectively passed to sliding sleeve by effect ground, so as to improve the reliability of sliding sleeve switch construction.
According to the invention it is proposed that a kind of sliding sleeve switch tubing string, including coiled tubing, being provided with coiled tubing can be
The switch pipe nipple engaged under 3rd hydraulic coupling with sliding sleeve, it is arranged on switch pipe nipple upstream and driving switch is short under the first hydraulic coupling
Save the hydraulic pressure pipe nipple being axially moved, and grappling pipe nipple, grappling pipe nipple include to project radially outward under the second hydraulic coupling and
The anchor log being fixedly connected with sliding sleeve, anchor log resets after the second hydraulic coupling is removed；First hydraulic coupling is more than the second hydraulic coupling,
Second hydraulic coupling is more than the 3rd hydraulic coupling, when in use, by switch tubing string tripping in fracturing string, liquid is filled with into coiled tubing
Body is simultaneously pressurized to the 3rd hydraulic coupling, switch pipe nipple is engaged with sliding sleeve；By liquid pressing to the second hydraulic coupling, make anchor log and cunning
Set is fixedly connected；By liquid pressing to the first hydraulic coupling, be axially moved hydraulic pressure pipe nipple driving switch pipe nipple and realize open or
Closedown sliding sleeve.
As known to those skilled in the art, " fracturing string " is formed by connecting by multiple sliding sleeves, therefore the cunning of the present invention
Set switch tubing string can be used for opening or closing some or certain some sliding sleeves in fracturing string.According to the sliding sleeve switch of the present invention
Tubing string, after grappling pipe nipple is fixedly connected with sliding sleeve sliding sleeve switch tubing string integrally cannot relative to fracturing string (or sliding sleeve) and
Motion, in addition to pipe nipple is switched.In the case where sliding sleeve switch tubing string is integrally motionless, it is short that hydraulic pressure pipe nipple can effectively drive switch
Section is axially moved to open or close corresponding sliding sleeve.This is particularly advantageous for the horizontal segment in stratum depths of horizontal well
, this is due to that the rigidity of common sliding sleeve switch tubing string used at present is very low (with the direction of adaptation level well), is carried upper
Or when transferring this common sliding sleeve switch tubing string, it is difficult to switch drive power effectively is passed into sliding sleeve, so as to be difficult to beat
Sliding sleeve is closed on or off.Open in addition, the sliding sleeve switch tubing string of the present invention can be realized one time, close multiple sliding sleeves, significantly improving
Efficiency of construction.
In one embodiment, grappling pipe nipple is disposed adjacently in the upstream of hydraulic pressure pipe nipple.So, grappling pipe nipple and sliding sleeve
Be fixedly connected do not interfere with switch pipe nipple motion.
In one embodiment, switch pipe nipple includes：The cylindrical body that upstream end thereof is connected with hydraulic pressure pipe nipple, in tubular sheet
The outer surface upstream portion of body sets fluted, engagement instrument, and it includes being arranged on the closing piece in groove, and closing piece includes being under it
The lead-in chamfered in area is swum, the first elastic component is provided between closing piece and groove, is set in the guiding shell at the middle part of cylindrical body
Body, guide housing include the leading end to be interacted with lead-in chamfered in its upstream portion and the stress in leading end downstream
Structure, force structure physical efficiency bear to make guide housing towards the 3rd hydraulic coupling in downstream or towards the First Driving Force of upstream
It is axially moved；When leading end is towards downstream movement, engagement instrument protrudes and engaged with sliding sleeve；When leading end is towards movements upstream
When, engage tool retraction and separated with sliding sleeve.
By controlling hydraulic coupling, it becomes possible to which sliding sleeve switch instrument is engaged or separated with sliding sleeve automatically by realization, so as to convenient
Follow-up taking-up sliding sleeve switch tubing string.The transmission of hydraulic coupling helps to realize without the help of any other physical unit
Hydraulic coupling is transmitted over long distances.In addition, the structure of this switch pipe nipple operated using hydraulic coupling is also more compact, consumable accessory is less
Thus service life is longer.Apply hydraulic coupling source on the ground, the size of easily controllable hydraulic coupling.
In one embodiment, engagement instrument also includes the retaining groove being arranged in groove, and retaining groove passes through shear pin and tubular sheet
Body phase connects, and closing piece is arranged in retaining groove and the first elastic component is between closing piece and retaining groove.By this structure, when sliding sleeve is opened
When sliding sleeve can not smoothly be departed from by closing tubing string, closing piece retaining groove can be pushed back by force by above carrying sliding sleeve switch tubing string and cutting shear pin
It is interior, realize the safe retrieving of sliding sleeve switch tubing string.
In one embodiment, the fluid apertures that the downstream in groove is provided through in the side wall of cylindrical body, stress
Structure includes first raised, the first raised upstream stress being slidably matched positioned at fluid apertures downstream and with the outer wall of cylindrical body
Face is connected with fluid apertures to bear the 3rd hydraulic coupling, downstream stress surface and the second elastic component being arranged on the downstream portion of cylindrical body
Contact and bear First Driving Force.In one embodiment, cylindrical body include positioned at fluid apertures upstream and with guide housing
The second projection that wall is slidably matched, the first projection and the second projection surround hydraulic cavities.Hydraulic cavities help to apply to force structure body
The 3rd hydraulic coupling is added to drive guide housing to move.
In one embodiment, guide housing also includes the extension in force structure body downstream, extension and tubular
The downstream portion of body forms the second elastic component chamber together, and the second elastic component is in the second elastic component intracavitary.Second elastic component
Chamber can play a protective role to the second elastic component, extend the service life of sliding sleeve switch instrument.
In one embodiment, hydraulic pressure pipe nipple includes：Fixed housing, extend out of housing and pass housing downstream face
Hollow piston rod, piston rod include the upstream portion for receiving the first hydraulic coupling and coordinating with housing slidingtype, extended under housing
Outside trip end face and with switching the downstream portion that is connected of cylindrical body of pipe nipple, and between upstream portion and downstream portion in
Portion, jump ring is provided with the mating surface of upstream portion and housing, answering of being contacted with upstream portion is provided with the middle part of piston rod
Position elastic component；In the initial state, piston rod is connected with housing by jump ring, when upstream portion is by the first hydraulic coupling, piston
Bar downstream moves relative to housing and driving switch pipe nipple downstream moves and pressed home elastic component；Removing the first hydraulic pressure
After power, return springs driving piston rod upstream moves relative to housing and is returned to original state.This hydraulic pressure pipe nipple
Control piece only includes jump ring and return springs, simple in construction, reliable, is easy to manufacture and safeguards.
In one embodiment, the middle part of piston rod forms hydraulic pressure reseting cavity together with housing, and return springs are arranged on
In hydraulic pressure reseting cavity.Hydraulic pressure reseting cavity can play a protective role to return springs, extend the service life of sliding sleeve switch instrument.
In one embodiment, the flowing hole for connecting hydraulic pressure reseting cavity with external environment is provided with housing.Pass through
Flowing hole is set, and hydraulic pressure reseting cavity does not connect for dead space but with external environment.During piston rod movement, in hydraulic pressure reseting cavity
Air hydraulic pressure reseting cavity can be flowed in or out through flowing hole, it reduce the resistance of motion of piston rod.
In this application, term " original state " refers to the state before the operation of sliding sleeve switch tubing string.Term " downstream ",
It is upstream that " upstream ", which is defined as close to well head, is downstream away from well head.Term " inclined-plane " be defined as with the radial direction of cylindrical body into
The face of certain angle.
Compared with prior art, the advantage of the invention is that：(1) sliding sleeve switch tubing string of the invention will effectively can drive
Power effectively passes to sliding sleeve, and the reliability of sliding sleeve switch construction is high, and especially suitable for horizontal well.(2) cunning of the invention
Set switch tubing string may be implemented on ground the switch for controlling underground sliding sleeve, be very easy to operate.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 shows the schematic diagram of the sliding sleeve switch tubing string according to the present invention.
Fig. 2 shows the schematic diagram of the switch pipe nipple according to the sliding sleeve switch tubing string of the present invention.
Fig. 3 is the zoomed-in view of I parts in Fig. 2.
Fig. 4 shows the schematic diagram of the hydraulic pressure pipe nipple of the sliding sleeve switch tubing string according to the present invention.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not according to the ratio of reality.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 schematically shows the structure of the sliding sleeve switch tubing string 100 according to the present invention.As shown in figure 1, sliding sleeve switch
Tubing string 100 includes coiled tubing 1, and grappling pipe nipple 2, hydraulic pressure pipe nipple 3 and switch pipe nipple 4 are provided with coiled tubing 1.Grappling is short
Section 2 is used to be fixedly connected with sliding sleeve (not shown)；Switch pipe nipple 4 can be engaged or separated with sliding sleeve；In switch pipe nipple 4 and sliding sleeve
During engagement, the meeting driving switch of hydraulic pressure pipe nipple 3 pipe nipple 4 is axially moved to open or close sliding sleeve.In one embodiment, grappling is short
Section 2 is disposed adjacently in the upstream of hydraulic pressure pipe nipple 3, and switch pipe nipple 4 is disposed adjacently in the downstream of hydraulic pressure pipe nipple 3, so in anchor
Determine after pipe nipple 2 is fixedly connected with sliding sleeve, not interfering with the motion of switch pipe nipple 4.In addition, at the end of sliding sleeve switch tubing string 100
End end is additionally provided with differential opening mechanism 5, and the 26S Proteasome Structure and Function of differential opening mechanism 5 is those skilled in the art institute
It is well known, repeat no more here.Below, grappling pipe nipple 2, hydraulic pressure pipe nipple 3 and switch pipe nipple 4 are described in detail respectively.
As shown in figure 1, grappling pipe nipple 2 includes anchor log 21, anchor log 21 can be in the second hydraulic pressure masterpiece in grappling pipe nipple 2
Project radially outward under and be fixedly connected with fracturing string or sliding sleeve.In one embodiment, anchor log 21 can be this area
Technical staff known to hydraulic anchor, repeat no more here.
Fig. 2 shows the structure of switch pipe nipple 4.As shown in Fig. 2 switch pipe nipple 4 includes cylindrical body 22, cylindrical body 22
Upstream end thereof be connected with the piston rod 11 (as shown in Figure 3) of hydraulic pressure pipe nipple 3, set in the outer surface upstream portion of cylindrical body 22
Fluted 30.
Switch pipe nipple 4 also includes engagement instrument, and engagement instrument includes the closing piece 17 being arranged in groove 30, in closing piece 17 and
First elastic component 18, such as spring are set between groove 30.It is provided with closing piece 17 and is engaged body 31, occlusion with what sliding sleeve engaged
The outer surface of the downstream edge of body 31 is configured to lead-in chamfered 32.
Switch pipe nipple 4 also includes guide housing 19.Guide housing 19 is set in the middle part of cylindrical body 22, and including place
In the leading end 33 of upstream and force structure body 34 in the downstream of leading end 33.Fig. 3 show in more detail force structure body 34
Structure.As shown in figure 3, the fluid apertures 20 being provided through in the side wall of cylindrical body 22 in the downstream of groove 30.Force structure
Body 34 include positioned at the downstream of fluid apertures 20 the first projection 47, the first projection 47 from guide housing 19 towards cylindrical body 22 and it is convex
Go out.The second projection 48 projected radially outward from cylindrical body 22 is also there are in the upstream of fluid apertures 20.First projection 47 and cylinder
The outer wall of shape body 22 is slidably matched, and the second projection 48 is slided with the inwall of guide housing 19 matches somebody with somebody, so as to first raised 47 and the
Two projections 48 define hydraulic cavities 35, and fluid apertures 20 is in the range of hydraulic cavities 35.Thus, the upstream of the first projection 47 by
Power face 50 is subjected to the 3rd hydraulic coupling.The second elastic component 21 is provided with the downstream portion of cylindrical body 22, such as is wrapped in cylinder
Helical spring on the downstream portion of shape body 22.Second elastic component 21 is in contact with the downstream stress surface 51 of the first projection 47, from
And the acceptable First Driving Force as caused by the second elastic component 21 of downstream stress surface 51 of the first projection 48.It is preferable real at one
Apply in example, guide housing 19 also includes the extension 36 in the downstream of force structure body 34.Extension 36 and cylindrical body 22
Downstream portion forms the second elastic component chamber 37 together, and the second elastic component 21 is arranged in the second elastic component chamber 37 with the elasticity of protection second
Part 21 is not influenceed by external object.
Switch pipe nipple 4 according to Fig. 2 and 3, in the initial state, the leading end 33 of guide housing 19 overcome the first bullet
The active force of property part 18 and closing piece 17 is pressed into retracted position.When applying towards three hydraulic coupling in downstream, force structure
Body 34 (or first projection 47) can bear the 3rd hydraulic coupling and cause guide housing 19 towards downstream movement.Leading end 33 also can be because
This and towards downstream movement and leave lead-in chamfered 32.Closing piece 17 projected radially outward in the presence of the first elastic component 18 and with
Sliding sleeve engages.In the process, the second elastic component 21 is squeezed.After three hydraulic couplings is removed, the meeting of the second elastic component 21
Apply the First Driving Force towards upstream to force structure body 34 (or first projection 47), guide housing 19 is therefore and towards upstream
Move and leading end 33 is pushed closing piece 17 along lead-in chamfered 32 makes it retract radially inwards to be separated with sliding sleeve.
Fig. 4 schematically shows the structure of hydraulic pressure short circuit 3.As shown in figure 4, hydraulic pressure pipe nipple 3 includes the fixed He of housing 9
Extension is passed to the piston rod 11 outside the downstream end face of housing 9 in from housing 9.Piston rod 11 is hollow structure, with piston
Hydraulic fluid is filled with bar 11.
The upstream portion 6 of piston rod 11 coordinates with the slidingtype of housing 9, and the top surface 42 of upstream portion 6 is configured to receiving the
One hydraulic coupling.The downstream portion 13 of piston rod 11 extends to outside housing 9 and the upstream end of the cylindrical body 22 with switching pipe nipple 4
It is connected.Piston rod 11 forms hydraulic pressure reseting cavity 41 in the middle part 8 between upstream portion 6 and downstream portion 13 together with housing 9.
The return springs 10 contacted with upstream portion 6 are installed in hydraulic pressure reseting cavity 41, such as the helical spring being wrapped on middle part 8.
In addition, the jump ring 7 for piston rod 11 to be connected with housing 9 is provided with the mating surface of upstream portion 6 and housing 9.Work as piston
When bar 11 is by the first hydraulic coupling, jump ring 7 can be extruded so that piston rod 11 can move relative to housing 9.This jump ring 7
It is known to those skilled in the art, repeats no more here.
Hydraulic pressure pipe nipple 3 according to Fig. 4, in the initial state, piston rod 11 are connected with housing 9 by jump ring 7.To
When hydraulic fluid is filled with sliding sleeve switch tubing string 100 and being pressurized to the first hydraulic coupling, piston rod 11 is downstream transported relative to housing 9
It is dynamic, so as to which driving switch pipe nipple 4 downstream moves.In the process, return springs 10 are squeezed.Removing the first hydraulic pressure
After power, return springs 10 can drive piston rod 11 upstream to be moved relative to housing 9 and be returned to original state.
Preferably, the flowing hole 12 for connecting hydraulic pressure reseting cavity 41 with external environment is provided with housing 9.So, liquid
Pressure reseting cavity 41 does not connect for dead space but with external environment.During the motion of piston rod 11, the sky in hydraulic pressure reseting cavity 41
Gas can flow in or out hydraulic pressure reseting cavity 41 through flowing hole 12, and it reduce the resistance of motion of piston rod 11.
The operating process of sliding sleeve switch tubing string 100 is described below according to Fig. 1 to Fig. 4.
Sliding sleeve switch tubing string 100 is lowered at the predetermined sliding sleeve position of underground, is then pumped into coiled tubing 1 certain
Measure hydraulic fluid.
First, hydraulic fluid is pressurized to 3~4MPa the 3rd hydraulic coupling.3rd hydraulic coupling pull switch pipe nipple 4 draws
Housing 19 is led towards lower downstream so that closing piece 17 the effect of the first elastic component 18 project radially outward and with predetermined sliding sleeve
Engagement.In the process, the second elastic component 21 is squeezed.
Then, hydraulic fluid is further pressurized to 6~7MPa the second hydraulic coupling.The anchor log 21 of grappling pipe nipple 2 exists
Project radially outward under second hydraulic coupling and be fixedly connected with other sliding sleeves of fracturing string.It should be noted that with anchor log 21
The sliding sleeve being fixedly connected is the sliding sleeve in predetermined sliding sleeve upstream.
Then, hydraulic fluid is further pressurized to 9~10MPa the first hydraulic coupling.The piston rod 11 of hydraulic pressure pipe nipple 3 makes
Jump ring 7 shrinks and downstream moved relative to housing 9, so as to which driving switch pipe nipple 4 downstream moves.Because now, switch is short
Section 4 is combined together with predetermined sliding sleeve, therefore can be realized and be opened or closed the sliding sleeve.
After completing predetermined sliding sleeve and opening or closing operation, pressure release in coiled tubing 1 to pressure is less than the 3rd hydraulic pressure
Power.Second elastic component 21 promotes guide housing 19 towards upper downstream so that closing piece 17 disengages with predetermined sliding sleeve.Anchor log 21
No longer it is fixedly linked with fracturing string.Return springs 10 drive piston rod 11 upstream to move and be returned to relative to housing 9
Original state.At this point it is possible to sliding sleeve switch tubing string 100 is gone out from well.
In abnormal conditions, closing piece 17 can not normally retract and be difficult to go out sliding sleeve switch tubing string 100 from well.For
This, is also provided with retaining groove 15, and retaining groove 15 is connected by shear pin 16 with cylindrical body 22 in groove 30.In this embodiment party
In case, closing piece 17 is arranged in retaining groove 15 and the first elastic component 18 is between closing piece 17 and retaining groove 15.So, when closing piece 17
When can not normally retract, continue above to carry sliding sleeve switch tubing string 100, shear pin 16 is cut.So, guide housing 19 can be made by closing piece
17 push back by force, and realize safe retrieving sliding sleeve switch tubing string 100.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as being rushed in the absence of structure
Prominent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in text
Disclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
1. a kind of sliding sleeve switch tubing string, including：
Coiled tubing, the switch pipe nipple that can be engaged under the 3rd hydraulic coupling with sliding sleeve is provided with the coiled tubing, set
In the hydraulic pressure pipe nipple for switching pipe nipple upstream and driving the switch pipe nipple to be axially moved under the first hydraulic coupling, and grappling
Pipe nipple,
Wherein, the switch pipe nipple includes：The cylindrical body that upstream end thereof is connected with the hydraulic pressure pipe nipple, in the cylindrical body
Outer surface upstream portion set it is fluted；Engagement instrument, it includes the closing piece being arranged in the groove, and the closing piece includes place
Lead-in chamfered in area downstream, the first elastic component is provided between the closing piece and groove；It is set in cylindrical body
The guide housing in portion, the guide housing include the leading end to be interacted with the lead-in chamfered and place in its upstream portion
Force structure body in leading end downstream；
The hydraulic pressure pipe nipple includes fixed housing, extends the hollow piston for passing housing downstream face out of described housing
Bar, the piston rod include the upstream portion for receiving the first hydraulic coupling and coordinating with the housing slidingtype, extend to the housing
The downstream portion being connected outside downstream end face and with the cylindrical body of the switch pipe nipple, and in the upstream portion and downstream
Middle part between portion, jump ring is provided with the mating surface of the upstream portion and housing, is set on the middle part of the piston rod
There are the return springs contacted with the upstream portion；
The grappling pipe nipple includes the anchor log that can be projected radially outward and be fixedly connected with the sliding sleeve under the second hydraulic coupling,
The anchor log resets after second hydraulic coupling is removed；First hydraulic coupling is more than the second hydraulic coupling, second liquid
Pressure is more than the 3rd hydraulic coupling,
When in use, liquid will be filled with into the coiled tubing and is pressurized to the in the switch tubing string tripping in fracturing string
Three hydraulic couplings, the switch pipe nipple is set to be engaged with the sliding sleeve；By the liquid pressing to the second hydraulic coupling, make the anchor log
It is fixedly connected with sliding sleeve；By the liquid pressing to the first hydraulic coupling, make the hydraulic pressure pipe nipple driving switch pipe nipple axial direction
Move and realize and open or close the sliding sleeve.
2. sliding sleeve switch tubing string according to claim 1, it is characterised in that the force structure physical efficiency is born towards downstream
The 3rd hydraulic coupling or be axially moved guide housing towards the First Driving Force of upstream；
Wherein, when the leading end is towards downstream movement, the engagement instrument protrudes and engaged with sliding sleeve；When the leading end
It is described to engage tool retraction and separated with sliding sleeve during towards movements upstream.
3. sliding sleeve switch tubing string according to claim 2, it is characterised in that institute is in the side wall of the cylindrical body
State the fluid apertures that the downstream of groove is provided through, the force structure body include positioned at the fluid apertures downstream and with the tubular sheet
The first projection that the outer wall of body is slidably matched, the described first raised upstream stress surface are connected with the fluid apertures to bear the 3rd liquid
Pressure, downstream stress surface contact with the second elastic component being arranged on the downstream portion of the cylindrical body and bear the first driving
Power.
4. sliding sleeve switch tubing string according to claim 3, it is characterised in that the cylindrical body includes being located at the fluid apertures
Upstream is simultaneously slidably matched second raised with the inwall of the guide housing, and described first is raised and the second projection surrounds hydraulic pressure
Chamber.
5. the sliding sleeve switch tubing string according to claim 3 or 4, it is characterised in that the guide housing also includes being in institute
The extension in force structure body downstream is stated, the extension forms the second elastic component together with the downstream portion of the cylindrical body
Chamber, second elastic component are in the second elastic component intracavitary.
6. the sliding sleeve switch tubing string according to any one of claim 1 to 4, it is characterised in that the engagement instrument also wraps
The retaining groove being arranged in the groove is included, the retaining groove is connected by shear pin with the cylindrical body, and the closing piece is arranged on institute
State in retaining groove and first elastic component is between the closing piece and retaining groove.
7. the sliding sleeve switch tubing string according to any one of claim 1 to 4, it is characterised in that in the initial state, described
Piston rod is connected with the housing by the jump ring, and when the upstream portion is by the first hydraulic coupling, the piston rod is relative
Downstream moved in housing and drive the switch pipe nipple downstream to move simultaneously pressed home elastic component；Removing the first hydraulic coupling
Afterwards, the return springs drive the piston rod upstream to be moved relative to housing and be returned to original state.
8. sliding sleeve switch tubing string according to claim 7, it is characterised in that the middle part of the piston rod and the housing one
Rise and form hydraulic pressure reseting cavity, the return springs are in the hydraulic pressure reseting cavity.
9. sliding sleeve switch tubing string according to claim 8, it is characterised in that be provided with the hydraulic pressure on the housing
The flowing hole that reseting cavity connects with external environment.
10. the sliding sleeve switch tubing string according to any one of claim 1 to 4, it is characterised in that the grappling pipe nipple is adjacent
Ground is arranged on the upstream of the hydraulic pressure pipe nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504823.8A CN105507869B (en) | 2014-09-26 | 2014-09-26 | Sliding sleeve switch tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504823.8A CN105507869B (en) | 2014-09-26 | 2014-09-26 | Sliding sleeve switch tubing string |
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| Publication Number | Publication Date |
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| CN105507869A CN105507869A (en) | 2016-04-20 |
| CN105507869B true CN105507869B (en) | 2018-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838217A (en) * | 2017-11-28 | 2019-06-04 | 中国石油大学(北京) | With brill pipeline scraper |
| CN110578498B (en) * | 2019-08-12 | 2020-07-10 | 浙江大学 | Self-adaptive air release rod and shallow layer air controlled air release recovery system and method |
| CN114059964A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
| CN114059963A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Underground pipe column and hydraulic opening tool for opening sliding sleeve switch |
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| CN103573215A (en) * | 2012-07-31 | 2014-02-12 | 中国石油化工股份有限公司 | Opening tool for openable sliding sleeve |
| CN103775047A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Sliding sleeve opening and closing device |
| CN202946112U (en) * | 2012-12-11 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Switching device of fracturing sliding sleeve |
| CN203130039U (en) * | 2012-12-27 | 2013-08-14 | 中国石油化工股份有限公司 | Switch tool for switch type sliding sleeve |
| CN103061709A (en) * | 2013-01-22 | 2013-04-24 | 中国石油天然气股份有限公司 | Sliding bush control tool and hydraulic-control sliding bush capable of achieving surpassing operation |
| CN203362115U (en) * | 2013-07-11 | 2013-12-25 | 中国石油集团渤海钻探工程有限公司 | Double-direction starting type sliding sleeve on-off tool |
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| CN105507869A (en) | 2016-04-20 |
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