CN105840163B - Ball seat component and pitching sliding sleeve fracturing device - Google Patents
Ball seat component and pitching sliding sleeve fracturing device Download PDFInfo
- Publication number
- CN105840163B CN105840163B CN201510020565.0A CN201510020565A CN105840163B CN 105840163 B CN105840163 B CN 105840163B CN 201510020565 A CN201510020565 A CN 201510020565A CN 105840163 B CN105840163 B CN 105840163B
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- Prior art keywords
- pressure break
- inner sleeve
- ball
- housing
- ball seat
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- 238000010008 shearing Methods 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 18
- 230000007547 defect Effects 0.000 abstract description 5
- 230000002829 reductive effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 25
- 238000007789 sealing Methods 0.000 description 19
- 238000009434 installation Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000000956 alloy Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 210000001109 blastomere Anatomy 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 208000034656 Contusions Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
- E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of ball seat component and pitching sliding sleeve fracturing devices, wherein pitching sliding sleeve fracturing device includes inner sleeve, housing, pressure break ball and ball seat component；Inner sleeve is slidably set in housing, and inner sleeve and outer put on offer pressure break window respectively, and inner sleeve is slided to open or close pressure break window；Pressure break ball release groove is offered on the medial surface of housing, pressure break ball is thrown on ball seat component；When ball seat component is moved to pressure break ball release groove, pressure break ball generates lower thrust under external force, and multiple ball seat brackets is pushed to be moved radially outwards, so that pressure break ball passes through ball seat component and falls in next section of pitching sliding sleeve fracturing device.Implement the pitching sliding sleeve fracturing device in the present invention, be able to achieve only throw ball can the unlimited interval of pressure break purpose, and construction cost can be reduced, increase well yield, solving the defect of the very poor limitation of used fracturing sliding bush and shear pin in the prior art influences the defect of inner sleeve sliding after being cut.
Description
Technical field
The present invention relates to hydrocarbon well completions apparatus field more particularly to a kind of ball seat components and pitching sliding sleeve fracturing device.
Background technique
In the prior art for shale gas reservoir transformation, the construction technology of low-permeability reservoir reconstruction, cable biography is generallyd use
Defeated perforating gun cooperation composite bridge plug or packer cooperate fracturing sliding bush or coiled tubing band underseal drive technology to realize, but this
A little existing construction technologies all have certain limitation.
When using the form of construction work of cable perforation cooperation composite bridge plug, perforation is costly, and perforation may be to stratum
It damages；It pumps bridge plug and needs a large amount of water；It bores except costly, bores except the time is longer.Moreover, after operation a distance,
Need cable to change bridge plug and perforating bullet, the period of construction is considerably long；It also needs to employ cable car in work progress.In addition,
Perforating bullet, the examination & approval of setting tool and gunpowder, transport are all highly difficult, will affect construction efficiency.
When using the form of construction work of packer cooperation fracturing sliding bush, when operation, needs termination of pumping pitching, release, and operation is completed
It also needs to bore afterwards except ball seat or salvages ball seat；Due to the reasons in structure of fracturing sliding bush itself, staged and layered series is restricted.This
Outside, the brill mill quality of ball seat will directly affect the subsequent complexity for repeating transformation.
When using coiled tubing band underseal drive technology, perforation is costly, may damage to coiled tubing；
It is limited by coiled tubing length, and the expense of Operation Tubing Aggregate is also higher.In addition, the form of construction work, which can also face, sand
The risk of card.
Summary of the invention
The technical problem to be solved in the present invention is that solve drawbacks described above in the prior art, provide a kind of ball seat component and
Pitching sliding sleeve fracturing device, be able to achieve only throw ball can the unlimited interval of pressure break purpose, and construction cost can be reduced, increased
Big well yield, solve in the prior art used in fracturing sliding bush very poor limitation defect and shear pin cut after shadow
Ring the defect of inner sleeve sliding.
In order to solve the above technical problems, being used for pitching sliding sleeve fracturing device, packet the present invention provides a kind of ball seat component
Multiple ball seat brackets being separated from each other are included, it is a hollow annular base body that the multiple ball seat bracket, which encloses,；Each ball seat
Bracket includes limit plate interconnected and supporting part, and the limit plate is fastened on the inner sleeve of the pitching sliding sleeve fracturing device
Between housing, the supporting part passes through the inner sleeve and stretches out from the inner wall of the inner sleeve.
The present invention also provides a kind of pitching sliding sleeve fracturing device, including inner sleeve, housing, pressure break ball and foregoing
Ball seat component；The inner sleeve is slidably set in the inside of the housing, and the inner sleeve and outer put on offer respectively
Go out for pressure break liquid stream to implement the pressure break window of pressure break, the inner sleeve slides axially to open or close the pressure break window；
Pressure break ball release groove is offered on the medial surface of the housing, the pressure break ball is thrown on the ball seat component；Work as institute
When stating ball seat component and being moved to pressure break ball release groove, the pressure break ball generates lower thrust under external force, pushes
The multiple ball seat bracket is moved radially outwards, so that the internal diameter of the ball seat component becomes larger, the pressure break ball passes through described
Ball seat component is fallen in next section of pitching sliding sleeve fracturing device.
In a specific embodiment of the invention, pitching sliding sleeve fracturing device further include setting the inner sleeve with it is described
Positioning mechanism between housing, the positioning mechanism include the guide groove being provided on the outer wall of inside race face and are set in described
Positioning sleeve between inner sleeve and the housing, the shape of the guide groove and the default movement routine of the inner sleeve match, institute
State the positioning region for being provided with and being extended in the guide groove on the inside of positioning sleeve；The inner sleeve is under external force relative to institute
Housing sliding is stated, the positioning region is moved along the side wall of the guide groove, moved to control the inner sleeve along preset path.
In the present embodiment, pitching sliding sleeve fracturing device further includes the reset spring being set in the housing, described
One end of reset spring is fixed, and the other end and the end of the inner sleeve abut against；The inner sleeve is under external force along described
Preset path defined by positioning mechanism moves down, and compresses the reset spring and opens the pressure break window to implement to press
It splits；After stopping pressure break and releasing stress, the reset spring resets, and the inner sleeve is reversely pushed to be limited along the positioning mechanism
Fixed preset path is mobile.
In the present embodiment, the guide groove has multiple along the axially extending of the inner sleeve and along the circumferential direction of the inner sleeve
The lower column position set gradually:
Initial position, it is described fixed when the pitching sliding sleeve fracturing device is installed positioned at the bottom end of the guide groove
Position portion is located at the initial position, and the pressure break window is in close state；
Pressure break position, far from one end of the initial position on the guide groove, when the positioning region is positioned at described
When pressure break position, the pressure break window is opened to implement pressure break；
Pressure position is removed, positioned at the bottom end of the guide groove, when pressure position is removed in the positioning region described in, the pressure break
Close is to suspend pressure break；
Pressure break ball releasing position, far from one end of the initial position on the guide groove, when the positioning position
When the pressure break ball releasing position, the ball seat component is moved to the pressure break ball release groove, the ball seat component
Internal diameter becomes larger, and the pressure break ball passes through the ball seat component and falls in next section of pitching sliding sleeve fracturing device；
Automatically reset position, positioned at the bottom end of the guide groove, when the positioning region automatically resets position described in,
The fracturing process of the pressure break close, pitching sliding sleeve fracturing device described in this paragraph is completed.
Preferably, the guide groove further includes being successively set on along the circumferential direction of the inner sleeve and described removing pressure position and the pressure
Position is pressed in secondary fracturing position and secondary remove between blastomere releasing position；The secondary fracturing position is located at the guide groove
Upper one end far from the initial position, when the positioning region is located at the secondary fracturing position, the pressure break window is opened
To be again carried out pressure break；Secondary remove presses position, positioned at the bottom end of the guide groove, when the positioning region is positioned at described secondary
When removing pressure position, the pressure break window is again switched off to suspend pressure break.
In the present embodiment, the guide groove further includes being successively set on the position that automatically resets along the circumferential direction of the inner sleeve
Set the adjustment position between the initial position and sliding sleeve open position；
The adjustment position judges the location of its for the movement routine by the inner sleeve；The sliding sleeve is opened
Position is opened, the top of pressure break ball releasing position on the guide groove is opened when the positioning region is located at the sliding sleeve
When position, the pressure break window is opened and the inner sleeve is fixedly connected with the housing by fixed mechanism.
In the present embodiment, pitching sliding sleeve fracturing device further includes the fixation between the inner sleeve and the housing
Mechanism；The fixed mechanism includes fixed ring, fixed ring holding tank and fixed ring release groove；The fixed ring is with compressive state card
It is located between the inner sleeve and the housing；The fixed ring holding tank is provided in described and puts on, compressed for accommodating
The fixed ring；The fixed ring release groove be provided with it is described it is outer put on, when the fixed ring holding tank be moved to it is described solid
When determining the connection of ring release groove, the fixed ring elastic expansion makes the inner sleeve stop sliding to being caught in the fixed ring release groove
It moves and is fixedly connected with the housing.
In the present embodiment, pitching sliding sleeve fracturing device further includes the shearing ring assemblies of split blade type, the shearing ring group
Part includes that cross section is L-shaped shearing ring, and the shearing ring is fastened between the inner sleeve and the housing, including is mutually perpendicular to
And the fixed part being fixedly connected and cut part；It is formed between the inner sleeve and the housing for the fixed part that is fixedly clamped
Space；The shear groove offered for accommodating the cut part is put in described.
In the present embodiment, the inner sleeve circumferentially offers multiple first pressure break windows, and the housing circumferentially opens up
There are multiple second pressure break windows, slide the inner sleeve, is overlapped the first pressure break window to open with the second pressure break window
Open the pressure break window；Corrosion-proof cover component is provided between the inner sleeve and the housing, the corrosion-proof cover component has third
Pressure break window and the inside for being fixed on the housing are overlapped the third pressure break window with the second pressure break window.
Implement ball seat component provided by the present invention and pitching sliding sleeve fracturing device, has the advantages that
(1) ball seat component is the split-type mechanism being made of multiple isolated ball seat brackets, under preset state open with
Discharge pressure break ball 5, fall into next section of pitching sliding sleeve fracturing device, realize only throw a ball and can the unlimited interval of pressure break mesh
's.Furthermore, it is not necessary that complicated ball injector, ball-receiver, and a large amount of pumping liquid can be saved, reduce construction cost.
It (2) is big orifice inside the pitching sliding sleeve fracturing device, the size of all ball seat components is identical, needs in the later period
When refracturing, do not need bore except any components can the matched refracturing pipe string of tripping in carry out multiplicating pressure break, pole
Big increases well yield, reduces construction cost.
(3) inner sleeve is slided under the guiding role of positioning mechanism by preset path, realizes pitching sliding sleeve fracturing device
It opens, close, discharging the movement such as pressure break ball and locking inner sliding sleeve, improving the degree of automation, substantially reduce construction period.
(4) pressure break window is provided with corrosion-proof cover component, prevents pressure break window from occurring under the fluid high-pressure erosion of fracturing fluid
Damaged or corrosion, overflows prevented also from fracturing fluid and pressure is caused to decline.
(5) shearing ring in the present invention can solve used conventional shear pin in the prior art and influence after being cut
The defect of inner sleeve sliding.
(6) spring protecting jacket can cause for preventing because impurity enters in spring in well cementation and fracturing process
The operation of the pitching sliding sleeve fracturing device be affected.
(7) without differential limitation, it can use unlimited number of sliding sleeve in well, infinite stages pressure break is realized, with utmostly
Raising yield；Moreover, not needing wireline operation vehicle or Operation Tubing Aggregate in fracturing process, also avoid causing because of perforation
The injury to ground, greatly reduce construction cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram of the pitching sliding sleeve fracturing device in a specific embodiment of the invention；
Fig. 2 is A sections in Fig. 1 of partial enlargement diagram；
Fig. 3 is the structural schematic diagram of shearing ring in Fig. 2；
Fig. 4 is the sectional view of shearing ring in Fig. 2；
Fig. 5 is B sections in Fig. 1 of partial enlargement diagram；
Fig. 6 is the structural schematic diagram of corrosion-proof cover component in Fig. 1；
Fig. 7 is the perspective view of pressure break housing in Fig. 1；
Fig. 8 is the cross-sectional view of pressure break housing in Fig. 1；
Fig. 9 is the perspective view of hard alloy sleeve in Fig. 1；
Figure 10 is the top view of ball seat component in Fig. 1；
Figure 11 is the perspective view of ball seat component in Fig. 1；
Figure 12 is C sections in Fig. 1 of partial enlargement diagram；
Figure 13 is the perspective view that internal axle sleeve and positioning mechanism are controlled in Fig. 1；
Figure 14 is the perspective view of positioning sleeve in Figure 13；
Figure 15 is D sections in Fig. 1 of partial enlargement diagram；
Figure 16 is the expanded schematic diagram of the guide groove in Figure 13；
Figure 17 shows when positioning region be located at initial position, remove pressure position and it is secondary remove pressure position when, pitching sleeve type pressure
Split the state diagram of device；
Figure 18 is shown when positioning region is located at pressure break position and secondary fracturing position, the shape of pitching sliding sleeve fracturing device
State figure；
Figure 19 shows the state diagram of pitching sliding sleeve fracturing device when positioning region is located at pressure break ball releasing position；
Figure 20 shows the state diagram of pitching sliding sleeve fracturing device when positioning region is located at sliding sleeve open position.
Specific embodiment
In order to which the purpose of the present invention, technical solution and advantage is more clearly understood, below in conjunction with drawings and examples,
The present invention will be described in further detail.It should be understood that specific embodiment described herein is only used for explaining this hair
It is bright, it is not intended to limit the present invention.
Fig. 1 shows the structural schematic diagram of the pitching sliding sleeve fracturing device in a specific embodiment of the invention.In order to more
Its edge is divided axially into tetra- sections of A, B, C and D and is further retouched by the details for clearly showing the pitching sliding sleeve fracturing device
It states, referring specifically to Fig. 2, Fig. 3, Fig. 7 and Figure 13.
The fracturing device includes inner sleeve 1, housing 2, top connection 3, lower contact 4, pressure break ball 5, ball seat component 6 and spring 9, interior
It offers and goes out for pressure break liquid stream to implement the pressure break window of pressure break respectively on set 1 and housing 2, inner sleeve 1 slides axially to open
Or close the pressure break window.
As shown in Figure 1, inner sleeve 1 includes pressure break inner sleeve 11, control internal axle sleeve 12 and spring protecting jacket 13, housing 2 includes connecing
Head installation housing 21, pressure break housing 22, control outer shaft 23 and spring overcoat 24.Inner sleeve 1 and housing 2 are split as detachably connecting
The multiple component parts connect are conducive to transport and be carried to construction site.
One end of connector installation housing 21, which plugs, is fixed with top connection 3, the end grafting of the other end and pressure break housing 22；
One end cap of pressure break housing 22 is in the outside of connector installation housing 21, the end grafting of the other end and control outer shaft 23；Control
One end cap of outer shaft 23 processed is in the outside of pressure break housing 22, the end grafting of the other end and spring overcoat 24；Spring overcoat
24 end cap is inserted with lower contact 4 in the outside of control outer shaft 23, the other end.Top connection 3, lower contact 4, installation housing
21, detachable by modes such as common helicitic textures respectively between pressure break housing 22, control outer shaft 23 and spring overcoat 24
Connection.
Pressure break inner sleeve 11 passes through the pressure break housing 22, and one end extends in connector installation housing 21, and the other end is stretched
To control outer shaft 23；One end of control internal axle sleeve 12 extends in control outer shaft 23 and mutually abuts with pressure break inner sleeve 11,
Its other end is extended in spring overcoat 24 and is mutually abutted with spring protecting jacket 13；One end of spring protecting jacket 13 and control inner shaft
Set 12 abuts, and the other end is free end.
Wherein, pressure break inner sleeve 11 circumferentially offers multiple first pressure break windows 111, and pressure break housing 22 circumferentially offers
Multiple second pressure break windows 221 make the first pressure break window when being passed through the fracturing fluid promotion inner sleeve 1 of high pressure relative to the sliding of housing 2
111 are overlapped with the second pressure break window 221 to open pressure break window.It is understood that the first pressure break window 111 and the second pressure break
The concrete shape of window 221 is not limited thereto, preferably the kidney-shaped in the present embodiment.
Top connection 3 provides the fracturing fluid of high pressure for connecting sleeve at the construction field (site), and top connection 3 has top connection through-hole
301。
Lower contact 4 is also used for the lower contact through-hole 401 that is connected with casing and has, and the free end of spring protecting jacket 13 extends to down
In tab through-hole 401.
When pitching sliding sleeve fracturing device in the installation present invention, top connection 3 upward, lower contact 4 is directed downwardly be placed in it is naked
Intraocularly, therefore it is referred to as top close to the position of top connection 3, is bottom close to the position of lower contact 4.
As shown in Fig. 2, the pitching sliding sleeve fracturing device further includes the shearing ring assemblies 14 of split blade type, for starting to press
Inner sleeve 1 is allowed to be maintained at initial position a before splitting, it is mobile to bottom under the effect of gravity to avoid inner sleeve 1.
In conjunction with Fig. 3, the split blade type structure of shearing ring assemblies 14 is the installation for the ease of the later period, including three sections of cross sections are
L-shaped shearing ring 141 and baffle ring 142, each shearing ring 141 and baffle ring 142 are fastened between inner sleeve 1 and housing 2, preferably block
It is located between the connecting pin of top connection 3 and pressure break inner sleeve 11 and connector installation housing 21, but not limited to this.
In conjunction with Fig. 4, each shearing ring 141 includes the fixed part 141a and cut part 142b for being mutually perpendicular to and being fixedly connected,
Three sections of shearing rings 141 are spliced into the complete annular for surrounding inner sleeve 1.
It is understood that shearing ring assemblies 14 are not limited only to include three sections of shearing rings 141 in the application, it can be with
It is to be surrounded by two, four or more shearing ring 141, specific number is not specifically limited herein, as long as can ensure that institute
There is shearing ring 141 to be evenly distributed in the circumferential direction of inner sleeve 1, and inner sleeve 1 can be made jointly to be maintained at initial bit before pressure break starts
Set a.
Connector installation housing 21 becomes larger in the position internal diameter for being equipped with shearing ring 141, is used for being formed in inner wall surface thereof
Accommodate the recess portion of fixed part 141a.The shear groove 112 of the annular for accommodating cut part 141b is offered in pressure break inner sleeve 11.
When external force is sufficiently large, that is, when being passed through the fracturing fluid of high pressure, inner sleeve 1 is mobile to the bottom of housing 2, and shearing ring 141 is cut, Gu
Determine portion 141a and cut part 142b separation.
Shearing ring 141 will cut the pressure that shearing ring 141 needs to reach certain for making inner sleeve 1 be maintained at initial position a
Value, the moment of shearing can be found out from the pressure oscillation above pressure gauge.Therefore, shearing ring can be judged when ground construction with this
141 references whether cut, and whether opened as the fracturing device in the application.
In addition, can put into cement rubber plug (also referred to as cementing plug) before putting into pressure break ball 5 and cement the well, this water
The bod is possible to accidentally open the fracturing device in the application because pressure has been suppressed when passing through ball seat, shearing ring
141 can also allow fracturing device to be in initial closed state in well cementing process.
As shown in figure 5, the pitching sliding sleeve fracturing device further includes the corrosion-proof cover group being mounted between inner sleeve 1 and housing 2
Part 7, it is damaged or rotten for preventing the first pressure break window 111 and the second pressure break window 221 from occurring under the high pressure effect of fracturing fluid
Erosion is also used for the gap for preventing fracturing fluid between inner sleeve 1 and housing 2 and overflows and pressure is caused to decline.
In the present embodiment, which is mounted between pressure break inner sleeve 21 and pressure break housing 22.It, should in conjunction with Fig. 4
Corrosion-proof cover component 7 specifically includes hard alloy sleeve 71 and two groups of seal assemblies 72.
The material of hard alloy sleeve 71 itself has erosion resistant speciality, in fracturing process, can be pumped into a large amount of pressure break
Liquid and fracturing sand, these can all cause certain erosion to pressure break notch, it is provided with the hard by erosion in order to prevent
Alloy sheath 71.Third pressure break window 711 is offered in hard alloy sleeve 71 and pressure break housing 22 is fixed on by helicitic texture
On inner wall, it is overlapped third pressure break window 711 with the second pressure break window 221.
In conjunction with Fig. 7, Fig. 8 and Fig. 9, it is logical that the first installation passed through for screw element or pin for suppressing metal is offered on pressure break housing 22
Hole 222, correspondence offers the second installation through-hole 712 in hard alloy sleeve 71.Third pressure break window 711 preferably and the second pressure break
The waist through hole that window 221 matches.
The both ends that hard alloy sleeve 71 is arranged in of two groups of seal assemblies 72 respectively symmetrically, play the role of sealing, avoid
Phenomena such as pressure declines caused by leaking because of fracturing fluid.It is circular O-ring seal that every group of seal assembly, which respectively includes section,
721, V-shaped seal ring 723 and V-seal packing 724, sealing 725 and of back ring with concave arc of O-ring seal washer 722, section
Sealing shield ring 726.Every group of seal assembly 72 is arranged by the position in Fig. 4 to reach best sealing effect, herein not one by one
It repeats again.
Wherein, O-ring seal 721 seals, and O-ring seal washer 722 is O-shaped for protecting during suppressing
Sealing ring 721；O-ring seal 721 can be deformed because of being pressurized, and O-ring seal washer 722 is anti-by limiting its deformation
Only it is damaged in extrusion process.
V-seal packing 724 plays the role of further sealing, and V-shaped seal ring 723 is for protecting V-seal packing 724
With O-ring seal 721, prevent during fracturing process or inner sleeve 1 move back and forth, sealed packing 724 and O-ring seal
721 damage because being squeezed.Sealing back ring 725 and part are caught in the Sealing shield ring 726 in 22 inner wall of pressure break housing, and use
In fixed V-seal packing 724 and O-ring seal 721.
Since pressure break inner sleeve 21 and V-seal packing 724 and O-ring seal 721 have relative friction, pressure break inner sleeve 21
Reciprocating motion can be such that V-seal packing 724 and O-ring seal 721 also moves, in order to avoid these sealing elements are being moved through
It is damaged in journey, needs to be added V-shaped seal ring 723, sealing back ring 725 and Sealing shield ring 726.
Fig. 5 combination Figure 10 and Figure 11, ball seat component 6 include multiple ball seat brackets 61 being separated from each other, these ball seat brackets
61 is divide petaloid, and are encircled into a hollow annular base body.Each ball seat bracket 61 includes 611 He of limit plate interconnected
Supporting part 612.
In the present embodiment, limit plate 611 and supporting part 612 are an integral molding structure.
Limit plate 611 is fastened between inner sleeve 1 and housing 2, and supporting part 612 passes through inner sleeve 1 and from the inner wall of inner sleeve 1
It stretches out.In the present embodiment, limit plate 611 is preferably fastened between pressure break inner sleeve 11 and control outer shaft 23, and is resisted against pressure
On the inner wall for splitting housing 22；Supporting part 612 passes through in pressure break inner sleeve 11 the ball seat support through holes 113 that open up and from pressure break inner sleeve
It is stretched out on 11 inner wall, to carry pressure break ball 5.
Preferably, supporting part 612 is provided with inclined surface 613 far from the one side edge of the limit plate 611, multiple mutually to divide
From the inclined surface 613 of ball seat bracket 61 be enclosed radially from outside to inside gradually to the inclined ring in the middle part of ball seat bracket 61
Shape inclined-plane, to prevent pressure break ball 5 from shaking.
Be between adjacent tees bracket 61 in point petaloid ball seat component 6 it is disjunct, when putting into pressure break ball 5, pressure break
Ball 5 is fallen on ball seat component 6, so that the pipe string of 6 or more ball sealer holder assembly, forms sealing, to keep the subsequent pressure squeezed into
The pressure of liquid.Although the gap very little between two adjacent tees brackets 61 has a small amount of pressure fluid and passes out, phase
For the large discharge pump vehicle of Oil Field, this amount of leakage is negligible, because pump truck squeezes into the row of liquid
It measures very big.So default forms sealing when pressure break ball 5 is fallen on ball seat component 6, fracturing fluid cannot pass through, to generate
Pressure is whole to push the inner sleeve 1 being connected with ball seat component 6.
In conjunction with Figure 12, pressure break ball release groove 231, in the present embodiment, pressure break ball are also provided on the medial surface of housing 2
Release groove 231 is to be provided with 23 inside of control outer shaft, and pressure break ball 5 is thrown on ball seat component 6；It suppresses on the ground,
It is filled with fracturing fluid, further pressure break ball 5 is pressed on annular ball seat component 6, pressure break ball 5 blocks what ball seat component 6 was surrounded
Through-hole plays the role of sealing fracturing fluid.With persistently suppressing on landing ground, the pressure of fracturing fluid is gradually increased, 5 He of pressure break ball
Ball seat component 6 forms sealing piston structure, under the pressure effect of fracturing fluid, entire inner sleeve 1 is driven to slide.
When ball seat component 6 is moved at pressure break ball release groove 231, gravity of multiple ball seat brackets 61 in pressure break ball 5
It is moved radially outwards under effect, until limit plate 611 is against the bottom of pressure break ball release groove 231, so that ball seat component 6
Internal diameter becomes larger, and pressure break ball 5 passes through ball seat component 6 and falls in next section of pitching sliding sleeve fracturing device.
Fig. 5 combination Figure 12, the present invention in pitching sliding sleeve fracturing device further include between inner sleeve 1 and housing 2
Fixed mechanism 15, the fixed mechanism 15 include fixed ring 151, fixed ring holding tank 152 and fixed ring release groove 153.
Wherein, fixed ring 151 is preferably arranged to have the c-type semi-ring of notch, offers notch on the side of semi-loop,
Make it can compressive deformation under external force.During installation, it is fastened between pressure break inner sleeve 15 and housing 2 with compressive state；Fixed ring
Holding tank 152 is circumferentially provided in 15 outside wall surface of pressure break inner sleeve, for accommodating compressed fixed ring 151；Fixed ring release
Slot 153 is provided on the inner wall of control outer shaft 23.It is understood that fixed ring 151 is formed using two semi-rings are opposite,
Also for the convenience of assembly, more multistage arcuate structure can also be divided into, be not specifically limited herein.
During inner sleeve 1 is mobile relative to housing 2, when fixed ring holding tank 152 is moved to and fixed ring release groove
153 connection when, 151 elastic expansion of fixed ring to being caught in fixed ring release groove 153, make inner sleeve 1 stop sliding and with housing 2
Control outer shaft 23 is fixedly connected.
Figure 12 combination Figure 13 and Figure 14, the pitching sliding sleeve fracturing device in the present invention further include setting in inner sleeve 1 and outer
The positioning mechanism 8 between 2 is covered, spring overcoat 24 is preferably provided in the present embodiment and controls the sky surrounded between internal axle sleeve 12
In.
Positioning mechanism 8 includes the guide groove 801 being provided in control 12 outside wall surface of internal axle sleeve and is set in control internal axle sleeve
Positioning sleeve 802 between 12 and spring overcoat 24, the shape of guide groove 801 match with the default movement routine of inner sleeve 1, positioning
The positioning region 803 extended in guide groove 801 is provided on the inside of set 802.It is opposite under external force to control internal axle sleeve 12
It is slided in housing 2, and then pushes 1 whole slide of inner sleeve, positioning region 803 is moved along the side wall of guide groove 801, to ensure inner sleeve 1
It is moved along preset path.
As shown in figure 14, the preferably circular protrusion in positioning region 803, is also possible to the structures such as straight pin, is smoothly led with realizing
To；The recess portion 804 for being fixedly connected with spring overcoat 24 is offered in the outside wall surface of positioning sleeve 802.
Figure 12 combination Figure 15, the present invention in pitching sliding sleeve fracturing device further include being set in answering in spring overcoat 24
Position spring 9, one end of the reset spring 9 are fixed, and the end of the other end and spring protecting jacket 13 abuts against.
Inner sleeve 1 pushes under the high pressure effect of fracturing fluid and is formed by sealing piston shifting by pressure break ball 5 and ball seat component 6
It is dynamic, and then entire inner sleeve 1 preset path defined by the positioning mechanism 8 is pushed to move down, compression reseting spring 9 simultaneously makes pressure break
Window is opened, and fracturing fluid implements pressure break by pressure break window.After stopping pressure break and discharging the pressure of fracturing fluid, reset spring 9
It resets, it is reversed that the preset path defined by the positioning mechanism 8 of inner sleeve 1 is pushed to move.
Preferably, the spring protecting jacket 13 being arranged in inner sleeve 1 can protect reset spring 9, to avoid the impurity such as fracturing sand into
Enter to control in internal axle sleeve 12 between reset spring 9, to avoid hindering the reset and compression procedure of reset spring 9.
Show what the guide groove 801 being provided in control 12 outside wall surface of internal axle sleeve was circumferentially unfolded in conjunction with Figure 13, Figure 16
Shape, guide groove 801 have multiple along the axially extending of inner sleeve 1 and along the following position that the circumferential direction of control internal axle sleeve 12 is set gradually
It sets:
Initial position a, positioned at the bottom end of guide groove 801.When pitching sliding sleeve fracturing device is installed, positioning region 803
Positioned at initial position a, the first pressure break window 111 is staggered with the second pressure break window 221 and third pressure break window 711, makes pressure break window
Mouth is in close state, referring specifically to Figure 17.
Pressure break position b, far from one end of initial position a on guide groove 801.When positioning region 803 is located at pressure break position b
When, reset spring 9 is compressed, and the first pressure break window 111, the second pressure break window 221 and third pressure break window 711 are overlapped, and is made
Pressure break window is opened to implement pressure break, referring specifically to Figure 18.
Pressure position c is removed, positioned at the bottom end of guide groove 801.When positioning region 803, which is located at, removes pressure position c, reset spring 9 is multiple
Position, pressure break close is to suspend pressure break, referring specifically to Figure 17.
Secondary fracturing position d, far from one end of initial position a on guide groove 801, when positioning region 803 is positioned at secondary
When the d of pressure break position, reset spring 9 is compressed, and pressure break window is opened to be again carried out pressure break, referring specifically to Figure 18.
It is secondary to remove pressure position e, positioned at the bottom end of guide groove 801, when positioning region 803 be located at it is secondary remove pressure position e when, reset
Spring 9 resets, and pressure break window is again switched off to suspend pressure break, referring specifically to Figure 17.
Pressure break ball releasing position f, far from one end of initial position a on guide groove 801.When positioning region 803 is located at pressure
When the f of blastomere releasing position, reset spring 9 is further compressed, and ball seat component 6 is moved at pressure break ball release groove 231,
The internal diameter of ball seat component 6 becomes larger, and pressure break ball 5 passes through ball seat component 6 and falls in next section of pitching sliding sleeve fracturing device, specifically
Referring to Figure 19.
Automatically reset position g, positioned at the bottom end of guide groove 801, when positioning region 803, which is located at, automatically resets position g, resets
Spring 9 resets, pressure break close.At this point, pitching sliding sleeve fracturing device is similar to the state in Figure 17, only pressure break ball 5
It has been released.
Since there are certain risks for the movement that controls entire inner sleeve 1 by pressure, thus be additionally arranged secondary fracturing position d and
Secondary to remove pressure position e, the operation of refracturing, to avoid pressure break is not completed also, positioning region 803 is just moved into pressure break ball and releases
Position f is put, thus phenomena such as avoiding pressure break insufficient.The secondary fracturing position d and secondary pressure position e that removes is mentioned for fracturing process
For the sufficient time, guarantee pressure break quality.
When positioning region 803 is moved to from initial position automatically resets position g, the pressure of this section of pitching sliding sleeve fracturing device
Split process completion.
In addition, needing to cooperate hydraulic selector tool for the pitching sliding sleeve fracturing device in all sections of disposable opening
(not shown) replaces fracturing fluid, provides the power of the sliding of inner sleeve 1.
It further include being successively set on and automatically reseting between position g and initial position a along the circumferential direction of inner sleeve 1 on guide groove 801
Adjustment position and sliding sleeve open position h.
Position is adjusted, the location of its is judged for the movement routine by inner sleeve 1, is specifically included shown in figure
The first adjustment position j1, second adjustment position j2, the third adjustment position j4 of adjustment position j3 and the 4th, but moved in adjustment position
When dynamic, pressure break ball 5 has been discharged.
The first adjustment position j1, far from one end of initial position a on guide groove 801.When positioning region 803 is located at first
When adjusting position j1, reset spring 9 is compressed, and the device is close with state shown in Figure 18.
Second adjustment position j2, positioned at the bottom end of guide groove 801.It is multiple when positioning region 803 is located at second adjustment position j2
Position spring 9 resets, and the device is close with state shown in Figure 17.
When positioning region 803 is located at third adjustment position j3, the state of the device and positioning region 803 are located at the first adjustment position
The state of the device is similar when j, and when positioning region 803 is located at the 4th adjustment position j4, state and the positioning region 803 of the device are located at
The state of the device is similar when the j2 of second adjustment position, and details are not described herein.
Above-mentioned adjustment position is provided with conducive to the construction personnel on ground, according to inner sleeve 1 according to this adjustment position according to
The secondary rule above mentioned, declined, above mentioned and declined judges the location of switching tools and the device and state.
Sliding sleeve open position h, the top of pressure break ball releasing position f on guide groove 801 are slided when positioning region 803 is located at
When covering open position h, pressure break window is opened and inner sleeve 1 is fixedly connected with housing 2 by fixed mechanism 15, makes the pitching sleeve type
Fracturing device is maintained at state as shown in figure 20.At this point, the compressed degree of reset spring 9 is maximum, pressure break window is opened.
It is carried out as follows specifically in conjunction with working principle of the Figure 16 to Figure 20 to the pitching sliding sleeve fracturing device in the present invention
It is bright.
The pitching sliding sleeve fracturing device can cooperate packer (not shown) to carry out segmentation installation:
Firstly, the tripping in packer (not shown) in naked eye (not shown) or casing (not shown), with
Insulate the annular section between naked eye or casing and production pipe.Then, pitching is recycled, closes ball seat, oil pipe pressurization is to set envelope
Every device, i.e., highly pressurised liquid is squeezed by pump truck and ball is pumped to ball seat.Here ball is not previously mentioned pressure break ball 5, and
It is a diameter than the smaller ball of pressure break ball 5, ball seat mentioned herein is also not previously mentioned split-type ball seat component 6, and
It is the existing ball seat positioned at entire pipe string end；When this ball reaches this existing ball seat, entire oil pipe will be closed,
So as to suppress packer, it may be said that this ball is for set packer.Finally, installation pitching sliding sleeve fracturing dress
It sets, fracturing sliding bush is now in the state of pressure break close illustrated in fig. 17, and positioning region 803 is located at initial position a.
The pitching sliding sleeve fracturing device also can connect casing (not shown) and go into the well and cement the well:
Firstly, pitching sliding sleeve fracturing device connecting sleeve is gone into the well；Then, bruising is recycled to cement the well.At this point, pressure break is sliding
Set is now in the state of pressure break close illustrated in fig. 17, and positioning region 803 is located at initial position a.
After installing the pitching sliding sleeve fracturing device in the present invention, start to carry out fracturing process:
1) pressure break ball 5 is put into from well head, pressure break ball 5 can fall the ball seat group in first pitching sliding sleeve fracturing device
On part 6, the structure similar to sealing piston is formed together with ball seat component 6.
2) top connection 3 connects external pipe persistently to squeeze into fracturing fluid, and high pressure caused by fracturing fluid acts on pressure break ball 5
On ball seat component 6.Form sealing since pressure break ball 5 is adjacent to after ball seat component 6, the pushed at high pressure inner sleeve 1 of fracturing fluid it is whole to
Lower slider, compression reseting spring 9.
And when pitching sliding sleeve fracturing device installs, shearing ring 141 is for preventing inner sleeve 1 from occurring sliding；When
After thrust caused by fracturing fluid is higher than the shear strength of shearing ring 141, shearing ring 141 is cut, i.e. fixed part 141a and cuts
Portion 141b separation is cut, at this point, inner sleeve 1 is whole just to start the slide downward under the guiding role of guide groove 801.
When positioning region 803 is moved to pressure break position b, the first pressure break window 111, the second pressure break window 221 and third
Pressure break window 711 is overlapped, and opens pitching sliding sleeve fracturing device to implement first time pressure break, referring specifically to Figure 18.
3) after first time pressure break, ground is bled off pressure, that is, has withdrawn the thrust being applied on pressure break ball 5 and ball seat component 6,
At this point, inner sleeve 1 moves up under the elastic-restoring force effect of reset spring 9, the meeting automatic reverse of positioning region 803, which is moved to, removes pressure
Position c.At this point, the first pressure break window 111 is staggered with the second pressure break window 221 and third pressure break window 711, make at pressure break window
In closed state.
4) low pressure is beaten on ground, carries out refracturing.At this point, pressure break ball 5 and ball seat component 6 be under the promotion of fracturing fluid, band
Dynamic inner sleeve 1 moves down again, compression reseting spring 9；When positioning region, 803 automatic reverse is moved to secondary fracturing position d, pressure
Window is split to open to be again carried out pressure break.
5) ground is bled off pressure again, and inner sleeve 1 moves up under the elastic-restoring force effect of reset spring 9, and positioning region 803 is certainly
Move to be moved to it is secondary remove pressure position e.
6) ground repressurization, pressure break ball 5 and ball seat component 6 drive inner sleeve 1 to move down under the promotion of fracturing fluid,
Compression reseting spring 9, until ball seat component 6 is moved to the location of pressure break ball release groove 231.At this point, pressure break ball 5 is being pressed
It splits and generates lower pressure under liquid, gravity or other external forces, ball seat component 6 is in turn to close to housing 2 under the action of pressure break ball 5
Direction it is mobile, ball seat component 6 is flared out so that internal diameter becomes larger, and pressure break ball 5 passes through ball seat component 6 and is released；Meanwhile it positioning
803 automatic reverse of portion is moved to pressure break ball releasing position f.
7) since pressure break ball 5 has been released, sealing is destroyed, and the power for pushing inner sleeve 1 to slide disappears, and inner sleeve 1 will not
It is further continued for gliding.Ground is bled off pressure, and inner sleeve 1 moves up under the elastic-restoring force effect of reset spring 9, sliding to close the pitching
The pressure break window of shell type fracturing device, 803 automatic reverse of positioning region are moved to the position g that automatically resets.
According to above-mentioned working principle, pressure break ball 5 successively drops down onto the pitching sleeve type pressure of second segment, third section to final stage
It splits in device.Since the pitching sliding sleeve fracturing device of top is turned off because pressure ball 5 is released, for each
Section pitching sliding sleeve fracturing device, all repeatable aforesaid operations 1) to 7), until completing entire fracturing process.
After above-mentioned pressing crack construction, tripping in hydraulic selector tool, the switching tools and external driver device phase are needed
Even, all pitching sliding sleeve fracturing devices of disposable opening are used for, the specific steps are as follows:
1) switching tools are started to suppress down toward shaft bottom when close to the last one pitching sliding sleeve fracturing device；This
When, the switch key block of switching tools can flick expansion, switching tools are automatically locked in inner sleeve 1, so by above mention or under
Put switching tools, the sliding of Lai Shixian inner sleeve 1.
2) positioning region 803 is located at the position g that automatically resets after fracturing process,
Firstly, making inner sleeve 1 be moved downward to positioning region 803 by pressure switches tool and being located at the first adjustment position j1；
Then, by above mentioning switching tools, so that inner sleeve 1 is moved upward to positioning region 803 and be located at second adjustment position j2；
In turn, by pressure switches tool, so that inner sleeve 1 is moved downward to positioning region 803 and be located at third adjustment position j3；
Finally, so that inner sleeve 1 is moved upward to positioning region 803 by above mentioning switching tools and adjust position j4 positioned at the 4th, this
When, entire adjustment process terminates.
3) by pressure switches tool, due to the motive force to inner sleeve 1 entirely from switching tools, can pressurize
Positioning region 803 is set to be moved to the sliding sleeve open position h positioned at 801 top of guide groove.At this point, fixed ring 151 is flicked and is caught in
In fixed ring release groove 153, which is locked in the state permanently opened.
4) it according to the method described above, successively opens second from the bottom, third from the bottom up to all pitching sliding sleeve fracturing devices.
5) after all pitching sliding sleeve fracturing devices are opened, switching tools are taken out, entire work progress is completed.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (9)
1. a kind of pitching sliding sleeve fracturing device, which is characterized in that including inner sleeve (1), housing (2), pressure break ball (5) and ball seat group
Part (6)；
The inner sleeve (1) is slidably set in the inside of the housing (2), distinguishes on the inner sleeve (1) and the housing (2)
It offers and goes out for pressure break liquid stream to implement the pressure break window of pressure break, the inner sleeve (1) slides axially described to open or close
Pressure break window；
Pressure break ball release groove (231) is offered on the medial surface of the housing (2), the pressure break ball (5) is thrown into described
On ball seat component (6)；
When the ball seat component (6) is moved at pressure break ball release groove (231), the pressure break ball (5) is in outer masterpiece
With lower generation lower thrust, multiple ball seat brackets (61) is pushed to be moved radially outwards, so that the internal diameter of the ball seat component (6) becomes
Greatly, the pressure break ball (5) passes through the ball seat component (6) and falls in next section of pitching sliding sleeve fracturing device；
It further include the positioning mechanism (8) being arranged between the inner sleeve (1) and the housing (2), the positioning mechanism (8) includes
It the guide groove (801) that is provided in the inner sleeve (1) outside wall surface and is set between the inner sleeve (1) and the housing (2)
The default movement routine of positioning sleeve (802), the shape and the inner sleeve (1) of the guide groove (801) matches, the positioning sleeve
(802) positioning region (803) extended in the guide groove (801) is provided on inside；
The inner sleeve (1) is slided relative to the housing (2) under external force, and the positioning region (803) is along the guide groove
(801) side wall is mobile, is moved with controlling the inner sleeve (1) along preset path.
2. pitching sliding sleeve fracturing device according to claim 1, which is characterized in that further include being set in the housing
(2) one end of the reset spring (9) in, the reset spring (9) is fixed, and the other end and the end of the inner sleeve (1) offset
It connects；
The preset path defined by the positioning mechanism (8) moves down the inner sleeve (1) under external force, described in compression
Reset spring (9) simultaneously opens the pressure break window to implement pressure break；After stopping pressure break and releasing stress, the reset spring
(9) it resets, reversely pushes the inner sleeve (1) preset path defined by the positioning mechanism (8) mobile.
3. pitching sliding sleeve fracturing device according to claim 1, which is characterized in that the guide groove (801) has more
A lower column position set gradually along the axially extending of the inner sleeve (1) and along the circumferential direction of the inner sleeve (1):
Initial position (a) is located at the bottom end of the guide groove (801), when the pitching sliding sleeve fracturing device is installed, institute
It states positioning region (803) and is located at the initial position (a), the pressure break window is in close state；
Pressure break position (b) is located at one end on the guide groove (801) far from the initial position (a), when the positioning region
(803) when being located at the pressure break position (b), the pressure break window is opened to implement pressure break；
Pressure position (c) is removed, the bottom end of the guide groove (801) is located at, presses position when the positioning region (803) are located at described remove
(c) when, the pressure break close is to suspend pressure break；
Pressure break ball releasing position (f) is located at one end on the guide groove (801) far from the initial position (a), when described fixed
When position portion (803) is located at the pressure break ball releasing position (f), the ball seat component (6) is moved to the pressure break ball release groove
(231) at, the internal diameter of the ball seat component (6) becomes larger, and the pressure break ball (5) falls to next across the ball seat component (6)
In section pitching sliding sleeve fracturing device；
Automatically reset position (g), is located at the bottom end of the guide groove (801), when the positioning region (803) are positioned at described automatic multiple
When position (g) of position, the fracturing process of the pressure break close, pitching sliding sleeve fracturing device described in this paragraph is completed.
4. pitching sliding sleeve fracturing device according to claim 3, which is characterized in that the guide groove (801) further includes
Along the circumferential direction of the inner sleeve (1) be successively set on it is described remove it is secondary between pressure position (c) and the pressure break ball releasing position (f)
Pressure break position (d) and secondary remove press position (e)；
The secondary fracturing position (d) is located at one end on the guide groove (801) far from the initial position (a), when described
When positioning region (803) is located at the secondary fracturing position (d), the pressure break window is opened to be again carried out pressure break；
Secondary remove presses position (e), is located at the bottom end of the guide groove (801), when the positioning region (803) are located at described two
It is secondary remove pressure position (e) when, the pressure break window is again switched off to suspend pressure break.
5. pitching sliding sleeve fracturing device according to claim 3, which is characterized in that the guide groove (801) further includes
The adjustment position to automatically reset between position (g) and the initial position (a) is successively set on along the circumferential direction of the inner sleeve (1)
It sets and sliding sleeve open position (h)；
The adjustment position judges the location of its for the movement routine by the inner sleeve；
The sliding sleeve open position (h) is located at the top of the pressure break ball releasing position (f) on the guide groove (801), works as institute
When stating positioning region (803) and being located at the sliding sleeve open position (h), the pressure break window is opened and the inner sleeve (1) and described outer
Set (2) is fixedly connected by fixed mechanism (15).
6. pitching sliding sleeve fracturing device according to claim 1, which is characterized in that further include being located at the inner sleeve (1)
Fixed mechanism (15) between the housing (2)；
The fixed mechanism (15) includes fixed ring (151), fixed ring holding tank (152) and fixed ring release groove (153)；
The fixed ring (151) is fastened between the inner sleeve (1) and the housing (2) with compressive state；
The fixed ring holding tank (152) is provided on the inner sleeve (1), for accommodating the compressed fixed ring (151)；
The fixed ring release groove (153) is provided on the housing (2), when the fixed ring holding tank (152) be moved to
When the fixed ring release groove (153) is connected to, fixed ring (151) elastic expansion is to being caught in the fixed ring release groove
(153) in, the inner sleeve (1) is made to stop sliding and being fixedly connected with the housing (2).
7. pitching sliding sleeve fracturing device according to claim 1, which is characterized in that further include the shearing ring group of split blade type
Part (14), the shearing ring assemblies (14) include that cross section is L-shaped shearing ring (141), and the shearing ring (141) is fastened on institute
It states between inner sleeve (1) and the housing (2), including the fixed part (141a) for being mutually perpendicular to and being fixedly connected and cut part
(141b)；
The space for the fixed part (141a) that be fixedly clamped is formed between the inner sleeve (1) and the housing (2)；It is described
The shear groove (112) for accommodating the cut part (141b) is offered in inner sleeve (1).
8. pitching sliding sleeve fracturing device according to claim 1, which is characterized in that the inner sleeve (1) circumferentially opens up
There are multiple first pressure break windows (111), the housing (2) circumferentially offers multiple second pressure break windows (221), described in sliding
Inner sleeve (1) is overlapped the first pressure break window (111) to open the pressure break window with the second pressure break window (221)；
It is provided between the inner sleeve (1) and the housing (2) corrosion-proof cover component (7), the corrosion-proof cover component (7) has third
Pressure break window (711) and the inside for being fixed on the housing make the third pressure break window (711) and the second pressure break window
(221) it is overlapped.
9. a kind of ball seat component is used for pitching sliding sleeve fracturing device as described in claim 1, which is characterized in that including more
A ball seat bracket (61) being separated from each other, it is a hollow annular base body that the multiple ball seat bracket (61), which encloses,；
Each ball seat bracket (61) includes limit plate interconnected (611) and supporting part (612), the limit plate
(611) it is fastened between the inner sleeve (1) of the pitching sliding sleeve fracturing device and housing (2), the supporting part (612) passes through institute
It states inner sleeve (1) and is stretched out from the inner wall of the inner sleeve (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020565.0A CN105840163B (en) | 2015-01-15 | 2015-01-15 | Ball seat component and pitching sliding sleeve fracturing device |
| PCT/CN2015/080588 WO2016112612A1 (en) | 2015-01-15 | 2015-06-02 | Ball seat assembly and ball throwing sliding sleeve type fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020565.0A CN105840163B (en) | 2015-01-15 | 2015-01-15 | Ball seat component and pitching sliding sleeve fracturing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105840163A CN105840163A (en) | 2016-08-10 |
| CN105840163B true CN105840163B (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510020565.0A Active CN105840163B (en) | 2015-01-15 | 2015-01-15 | Ball seat component and pitching sliding sleeve fracturing device |
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| Country | Link |
|---|---|
| CN (1) | CN105840163B (en) |
| WO (1) | WO2016112612A1 (en) |
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| CN107143307A (en) * | 2017-07-20 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of sliding sleeve fracturing device |
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| CA3219730A1 (en) * | 2021-05-21 | 2022-11-24 | Michael Werries | Method for multistage fracturing of a geothermal well |
| CN114016952A (en) * | 2021-12-02 | 2022-02-08 | 国仪石油技术(无锡)有限公司 | Integrated ball seat sliding sleeve structure |
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| CN116084904A (en) * | 2023-01-09 | 2023-05-09 | 新疆敦华绿碳技术股份有限公司 | CO capable of multiple linkage protection 2 Auxiliary pressurizing device and method for fracturing |
| CN116480315A (en) * | 2023-03-17 | 2023-07-25 | 西南石油大学 | Horizontal well reciprocable-opening and-closing infinite-stage fracturing well cementation sliding sleeve and technological method |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016112612A1 (en) | 2016-07-21 |
| CN105840163A (en) | 2016-08-10 |
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