CN103982167B - A kind of full-bore pitching sliding sleeve staged fracturing equipment - Google Patents
A kind of full-bore pitching sliding sleeve staged fracturing equipment Download PDFInfo
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- CN103982167B CN103982167B CN201410221000.4A CN201410221000A CN103982167B CN 103982167 B CN103982167 B CN 103982167B CN 201410221000 A CN201410221000 A CN 201410221000A CN 103982167 B CN103982167 B CN 103982167B
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Abstract
The invention discloses a kind of full-bore pitching sliding sleeve staged fracturing equipment, the oil pipe being connected including some packers and the pitching sliding bush apparatus being sequentially arranged between packer on oil pipe with each packer；Described pitching sliding bush apparatus includes connecting with described oil pipe and interconnective counting assembly and plugging device, and counting assembly and plugging device in all pitching sliding bush apparatus are respectively provided with identical internal diameter.The present invention can implement fracturing work in the case of tubing diameter is constant, has interior latus rectum big, can provide the advantages such as enough fluid passage compared with common pitching sliding sleeve.
Description
Technical field
The invention belongs to oil and gas exploitation equipment, be specifically related to a kind of full-bore pitching sliding sleeve staged fracturing equipment.
Background technology
In modern oil-gas mining, fracturing work is a kind of very effective volume increase way.Pitching sliding sleeve is a kind of at water
Flat bore hole or cased well separate zone production or pressure break realize the downhole tool of oil jacket annular space switch.By ground to oil pipe pitching,
Ground realizes the unlatching of sliding sleeve in the face of oil pipe pressurization, and pressure is passed to payzone by the perforate of sliding sleeve by well liquid, and payzone is carried out pressure break.
For same specification oil pipe, typically there is the supporting steel ball of multiple diameter, coordinate the setting aperture of pitching sliding sleeve, multilamellar can be realized same
Time go into the well stratified operation.The pitching of the technology of pitching sliding sleeve steel ball with respective aperture no more than using different-diameter is sliding both at home and abroad
The setting of set is matched, from small to large, from top to bottom, it is achieved stratified operation.But owing to being limited by tubing diameter size
With the requirement of latus rectum, the classification quantity of steel ball size is restricted, and makes latus rectum less because the setting aperture of lower floor is less,
It is unfavorable for the lifting of pressure break production efficiency.
Summary of the invention
It is an object of the invention to provide a kind of multiple zone that realizes in the case of tubing diameter is constant and be layered unlatching operation
Full-bore pitching sliding sleeve staged fracturing equipment.
Realize the object of the invention the technical scheme is that
Full-bore pitching sliding sleeve staged fracturing equipment, the oil pipe being connected with each packer including some packers and successively
It is located at the pitching sliding bush apparatus on oil pipe between packer；Described pitching sliding bush apparatus includes connecting with described oil pipe and interconnecting mutually
The counting assembly connect and plugging device, counting assembly in all pitching sliding bush apparatus and plugging device are respectively provided with identical interior
Footpath.
Described counting assembly, including the first body, is actively installed on the first body tubular that is interior and that seal with the first body
Slip mandrel and pitching, the inwall of described first body is axially arranged with some first room grooves, and described slip mandrel is provided with
Upper and lower two group of first lobe door, often organizes what the first lobe door was formed by the first lobe block and the first sealing ring, and described first lobe block passes
Slide cores shaft wall is movably arranged on slip mandrel and matches with the first room groove in pitching and the first body, and described first
Sealing ring is located at the top of the first lobe block in barrel and matches with pitching.
Described first body is threaded connection is constituted by the first top connection and the first cylinder, described first room groove and cunning
Moving mandrel is located on the first cylinder；The two ends up and down of described slip mandrel are provided with matches with the first room groove on the first cylinder
The first elastic claw head；The size of described first lobe block is more than the wall thickness of slip mandrel；Described upper and lower two group of first lobe door
In two the first lobe blocks between distance and adjacent two the first room grooves between distance unequal.
The another kind of counting assembly that the present invention provides, the orienting cover including the second body, being located in the second body, rotation
Set, opening sleeve and central canal；Described orienting cover and opening sleeve are by being separately fixed at up and down on the second body, and described central canal is sheathed
Axially move in orienting cover, in the lower end of central canal, be provided with the cushion rubber coordinated with pitching, described orienting cover and central canal
Being respectively equipped with the ratchet of mutual dislocation in circumference, described turning set is set on central canal and by the return being located in the second body
Spring supporting, turning set is provided with ratchet and matches with the ratchet on described orienting cover and central canal, and turning set and opening sleeve exist
Formed on one setting position of circumference and move to axial.
Ratchet mutual dislocation 1/2 phase place on described central canal and orienting cover；Described turning set is mutually countershaft with opening sleeve
To motion by the guide pad being located on turning set or axially open respectively with the axially open being located on opening sleeve or guide pad phase
Cooperatively form；Described second body is by the second top connection, the second cylinder and housing is the most threaded forms, described orienting cover,
Turning set and opening sleeve are located in the second cylinder, and described central canal is located in the second cylinder and housing, and described return spring is located at
Between described turning set and housing.
Described plugging device include the 3rd body, be actively installed in the 3rd body with slip mandrel in described counting assembly or
Person's central canal match and with the 3rd body seal closure pipe, be located at the 3rd body in and by first shearing nail with the 3rd pipe
Body connects the shear sleeve being positioned at below closure pipe, in being set in closure pipe and shear sleeve and by the second shearing nail and closure Guan Lian
The tubular ball seat connect；It is provided with the second room groove between described closure pipe and shear sleeve；The second lobe door it is provided with in described ball seat, second
Lobe door is made up of the second lobe block and the second sealing ring, and described second lobe block is movably arranged on ball seat and pitching through ball seat barrel
Matching with the second room groove, described second sealing ring is two upper and lowers being respectively provided at the second lobe block in ball seat barrel and throwing
Ball matches；The inwall of described 3rd body is provided with draw-in groove, and described closure pipe is provided with the second elastic claw head and the 3rd body
On draw-in groove match, closure pipe and the 3rd body are respectively equipped with can be corresponding first, second through hole；In described shear sleeve
Lower end is provided with the first seam coordinated with described ball seat, and the lower end in described 3rd body is only provided with second coordinated with shear sleeve
Mouthful.
Described 3rd body is the most from top to bottom threaded connection is formed by center tap, shearing cylinder and lower contact；Described
Through hole and draw-in groove on 3rd body are located on center tap, and described closure pipe is located in center tap；Described first shears nail is located at
On described shearing cylinder, described shear sleeve is located in shearing cylinder；Seam on described 3rd body is located in described lower contact.
Distance between described first seam and described ball seat is equal to the distance between described first through hole and the second through hole.
It is provided with suitable distance between described second seam and described shear sleeve；The size of described second lobe block is more than ball seat
Wall thickness.
In described second lobe door, the second lobe block is 4 be circular layout.
Due to the fact that the counting assembly in all pitching sliding bush apparatus and plugging device all use identical internal diameter, can
To implement fracturing work in the case of not changing oil pipe logical oil diameter, have the advantage that
1) possessing the function of many number of stages hierarchical control fracturing work, layering quantity is not limited by tubing diameter；
2) constant due to tubing diameter, can possess bigger interior latus rectum, can provide more compared with common pitching sliding sleeve
Enough fluid passages；
3) after pitching is setting, it can be ensured that setting, frac pressure is reliably born；
4) it is suitable for the pitching mode of operation of standard, makes operation generalization, simplify.
The present invention will be further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of counting assembly in the present invention.
Fig. 3 is the operation principle schematic diagram of counting assembly shown in Fig. 2.
Fig. 4 is the structural representation of another kind of counting assembly in the present invention.
Fig. 5 is the operation principle schematic diagram of counting assembly shown in Fig. 4.
Fig. 6 is the structural representation of plugging device in the present invention.
Fig. 7 is the operation principle schematic diagram of plugging device.
Fig. 8 is the operation principle schematic diagram of the present invention.
Detailed description of the invention
As it is shown in figure 1, the full-bore pitching sliding sleeve staged fracturing equipment that the present invention provides, including some packers 4 and each
Oil pipe 3 that packer 4 connects and the pitching sliding bush apparatus that is sequentially arranged between packer 4 on oil pipe 3；Described pitching sliding bush apparatus
Including connecting with described oil pipe 3 and interconnective counting assembly 1 and plugging device 2 or counting assembly 3 and plugging device 2,
Counting assembly 1 and plugging device 2 in all pitching sliding bush apparatus are respectively provided with identical internal diameter, between two adjacent packers 4
Form payzone.
Described counting assembly 1, as in figure 2 it is shown, include the first body, the first body is by the first top connection 101 and first
Body 102 is threaded connection composition, and the inwall of the first cylinder 102 is axially arranged with some first room grooves 107, the first room groove
The quantity of 107 is arranged according to the count requirement of enumerator；Being movably equipped with tubular slip mandrel 106 in first cylinder 102, tubular is sliding
The two ends up and down of moving mandrel 106 are provided with the first elastic claw head 104 matched with the first room groove 107 on the first cylinder 102,
Tubular slip mandrel 106 is provided with between O 105 and the first cylinder 102 formation and seals, and the middle part of slip mandrel 106 is provided with
Upper and lower two group of first lobe door, often organizes the first lobe door by 4 (or six) the first lobe block 109 being circular layout and one first
Sealing ring 108 forms, and the size of the first lobe block 109 is more than the wall thickness of slip mandrel 106, and the first lobe block 109 is through sliding
Mandrel 106 barrel is movably arranged on slip mandrel 106 and matches with the first room groove 107 on pitching 103 and the first cylinder 102
Close, the distance between two the first lobe blocks 109 in upper and lower two group of first lobe door with between adjacent two the first room grooves 107
Distance unequal so that when one of them first lobe block 109 coordinates with a first room groove 107, another first lobe
Block 109 does not matches with other the first room groove 107；First sealing ring 108 is located at the first lobe block in slip mandrel 106 barrel
Match with pitching 103 in the top of 109.
The operation principle of counting assembly 1 is as shown in Figure 2 and Figure 3.Counting assembly 1 is slip counting structure, by with slip mandrel
The first room groove 107 number on the first cylinder 102 that the first lobe door mesopetalum block 109 on 106 matches counts.Steel is thrown
Ball 103 pressurizes after sealing, and promotes 2 groups of lobe blocks 109 of slip mandrel 106 to be alternately closed and opening action, often crosses a steel ball
103 complete a cycle, promote elastic claw head 104 to move down a groove, it is achieved counting.The concrete action of counting assembly 1 is such as
Under:
When the position of the first lobe block 109 is relative with the first room groove 107 on the first cylinder 102, can be empty to first
Dodging in the groove 107 of position, make pitching 103 pass through, this lobe door is open mode.Otherwise lobe block 109 is without dodging space, pitching 103 nothing
Method is passed through, for closed mode.The counting assembly 1 epivalve door when original position as in figure 2 it is shown, in two group of first lobe door is closed,
Hypovalve door is opened, when pitching 103 falls into this device, and pitching 103 is withstood by the lobe block 109 in epivalve door, and with the first sealing ring
108 form sealing；Now having O 105 to seal between slip mandrel 106 and the first cylinder 102, tubing pressure promotes slide cores
Relative first cylinder 102 slide downward one segment distance of axle 106, until the lobe block 109 in epivalve door is opened, the lobe block in hypovalve door
109 close, and steel ball falls between the lobe block 109 of two lobe doors, as shown in Fig. 3 (a)；Therefore pitching 103 continues under tubing pressure
Promote relative first cylinder 102 slide downward of slip mandrel 106, lead to smoothly until the lobe block 109 in hypovalve door opens pitching 103
Cross, as shown in Fig. 3 (b).Now, whole counting assembly 1 is by a pitching 103, relative first cylinder 102 of slip mandrel 106
One meter digital of slide downward, the number of meter digital is as desired by the number N of the first room groove 107 being provided for counting
Determine, for the first room groove 107 of counting, from the first lobe block 109 of set below the first lobe door of slip mandrel 106
First the first room groove 107 in lower section is counted, as shown in Figure 2.The first elastic claw head 104 on slip mandrel 106 and first
The first room groove 107 on body 102 matches the location being mainly used in slip mandrel 106 in sliding process.
Fig. 4 show the another kind of counting assembly 3 that the present invention provides, and including the second body, is located at determining in the second body
To set 302, turning set 309, opening sleeve 311 and central canal 306；Described second body is by second top connection the 301, second cylinder
305 and the most threaded composition of housing 312, described orienting cover 302, turning set 309 and opening sleeve 311 are located at the second cylinder
In 305, wherein orienting cover 302 and opening sleeve 311 are by being separately fixed at up and down on the second cylinder 305, and described central canal 306 is located at
In second cylinder 305 and housing 312, it is interior by being located at locating piece 303 thereon with fixed that central canal 306 is set in orienting cover 302
Slotted eye 304 on set 302 matches and axially moves, and is provided with the glue coordinated with steel pitching 103 in the lower end of central canal 306
Circle 315；The ratchet 307,307 ' of mutual dislocation, orienting cover it is respectively equipped with in the circumference of described orienting cover 302 and central canal 306
302 and central canal 306 on ratchet 307,307 ' mutual dislocation 1/2 phase place (distance between ratchet and ratchet is phase place)；Institute
Stating turning set 309 to be set on central canal 306, the lower step in housing 312 is provided with packing ring 314, turning set 309 is by setting
Return spring 313 between itself and housing 312 inner washer 314 supports, and turning set 309 is provided with inner ring ratchet 308 with described
Ratchet 307 ' on central canal matches, and the outer wall of turning set 309 is additionally provided with single outer ring ratchet 317 and described orienting cover
Ratchet 307 on 302 matches, and opening sleeve 311 is provided with axially open 310 on a setting position of circumference, and turning set 309 leads to
Cross and thereon can move to axial as the formation that matches with the opening 310 on opening sleeve 311 of the outer ring ratchet 317 of guide pad
(or turning set is matched by the guide pad being located at axially open thereon be located on opening sleeve and is formed between them
Motion to axial).
The operation principle of counting assembly 3:
See Fig. 4, Fig. 5, first according to counting it needs to be determined that ratchet 307 number on orienting cover 302 is as counting ratchet, work as pitching
103 enter counting assembly, fall on the cushion rubber 315 of its lower end by central canal 306, and due to the magnitude of interference, pitching 103 drives center
Pipe 306 moves downward, and the inner ring ratchet 308 that central canal 306 acts on turning set 309 by ratchet 307 ' promotes turning set 309
Lower pressure return spring 313 so that the outer ring ratchet 317 of turning set 309 deviates from the ratchet 307 of orienting cover 302, turning set 309 to
The distance of lower motion is spacing by opening sleeve 311, such as Fig. 5 (a)；Due to the ratchet 307 on orienting cover 302 and central canal 306,
307 ' mutual dislocation 1/2 phase places, turning set 309 is rotating 1/2 phase place, such as Fig. 5 in the tooth engagement process of central canal 306
(b)；After pitching 103 is pressure extruded central canal 306, under the effect of return spring 313, turning set 309 drives central canal
306 move upward reply, and turning set 309 is being rotated further again 1/2 phase place in the tooth engagement process of orienting cover 302, and is replying
Original state (sees Fig. 4), and at this moment turning set 309 has turned over 1 phase place.Overlapping investment pitching 103, by counting assembly, rotates
Set 309 repetition above procedure, until last counting phase, the single outer ring ratchet 317 of turning set 309 is just directed at opening
The opening 310 of set 311 so that central canal 306 can drive turning set 309 to move downward and stretch out housing 312, such as Fig. 5 (c) institute
Show.
According to the design of the present invention, may also provide other counting assembly different from above-mentioned counting assembly structure, these are equal
Belong to the technical scheme being equal to counting assembly of the present invention that it will be appreciated by those skilled in the art that, do not repeat them here.
Described plugging device, as shown in Figure 6, including the 3rd body, the 3rd body by center tap 201, shear cylinder 213 and under
Joint 218 is the most from top to bottom threaded connection composition；Center tap 201 and the first cylinder 102 in counting assembly 1 or counting
Housing 312 in device 3 is threaded, and center tap 201 is provided with the first through hole 206, and the inwall of center tap 201 is provided with and blocks up and down
Groove 203, is movably equipped with in center tap 201 and slip mandrel 106 in described counting assembly 1 or the central canal 306 in counting assembly 3
The closure pipe 204 matched, closure pipe 204 is provided with O 207 and seals with center tap 201；It is provided with shearing in shearing cylinder 213
Set 216, shear sleeve 216 is connected by the first shearing nail 215 with shearing cylinder 213 and is positioned at below closure pipe 204；At closure pipe
Being arranged with tubular ball seat 209 between 204 and shear sleeve 216, ball seat 209 is by the second shearing nail 208 with closure pipe 204 even
Connect；It is provided with the second room groove 212 between closure pipe 204 and shear sleeve 216；Be provided with the second lobe door in ball seat 209, the second lobe door by
Second lobe block 211 and the second sealing ring 210 form, and the second lobe block 211 is 4 (or six) being circular layout, the second lobe block 211
Size more than the wall thickness of ball seat 209, the second lobe block 211 through the barrel of ball seat 209 be movably arranged on ball seat 209 with
Pitching and the second room groove 212 match, and the second sealing ring 210 is two and is respectively provided at the second lobe block 211 in ball seat barrel
Upper and lower matches with pitching, and ball seat 209 is provided with O 219 and seals with shear sleeve 216；Closure pipe 204 is provided with the second bullet
Property pawl head 202 match with the draw-in groove 203 being located on center tap 201 inwall, be provided with can be with center tap 201 for closure pipe 204
On the second through hole 205 of the first through hole 206 correspondence；In shear sleeve 216, lower end is provided with the first seam coordinated with ball seat 209
214, distance L2 between the first seam 214 and ball seat 209 is equal to distance L1 between the first through hole 206 and the second through hole 205；
Lower end in lower contact 218 is provided with the second seam 217 coordinated with shear sleeve 216, between the second seam 217 and shear sleeve 216
It is provided with suitably distance L3.
The operation principle of plugging device 2 as shown in Figure 6, Figure 7, plugging device 2 when original state as shown in Figure 6, at this moment
Second elastic claw head 202 of closure pipe 204 is positioned at the upper draw-in groove 203 on center tap 201 inwall, makes the second lobe on ball seat 209
The second lobe block 211 in Men, facing to by the vacant slot 212 formed between center tap 201 and shear sleeve 216, is in open mode.
Under in counting assembly 1, the central canal 306 in slip mandrel 106 or counting assembly 3 triggers, as shown in Fig. 7 (a), closure pipe 204
Being promoted, relative center tap 201 moves down, and now the second lobe door on ball seat 209 is closed, and the second lobe block 211 returns ball seat
In 209, the O 219 on ball seat 209 enters shear sleeve 216 sealing surface, and pitching 103 falls from counting assembly 1, falls into ball seat
Form bottom closure with the second sealing ring 210 in 209.As shown in Fig. 7 (b), under the continuation effect of tubing pressure, pitching 103
Drag ball seat 209 and closure pipe 204 until the second elastic claw head 202 of closure pipe 204 enters the lower card on center tap 201 inwall
In groove 203, second shears nail 208 cut-out, at this moment blocks second through hole the 205, first through hole 206 on pipe 204 and center tap 201
Align formation oil pipe passage；Then during ball seat 209 falls into shear sleeve 216, and the first final and shear sleeves of shearing nail 215 are cut off
216 together fall in lower contact 218, as shown in Fig. 7 (c), and the vacant slot now formed between center tap 201 and shear sleeve 216
212 dimension extension, make lower floor's pitching 103 can pass through this ball seat 209, as shown in Fig. 7 (d).
Plugging device 2 is before being triggered, and all pitchings can pass through, and after being counted device triggering, pitching will envelope
Plug-hole footpath, and under tubing pressure effect, by plugging device 2 blocks the second through hole 205 on pipe 204 and center tap 201,
First through hole 206 opens oil pipe passage, makes oil pipe internal pressure be transferred to payzone, starts fracturing work.
The full-bore pitching sliding sleeve staged fracturing equipment of present invention situation such as Fig. 8 (a) (e) institute when reality is applied
Show, first determine the number of pitching sliding bush apparatus according to pressure break payzone number.When using counting assembly 1 (seeing Fig. 2),
At the numerical value of aboveground counting assembly 1 meter digital using specific purpose tool to set this layer of position in advance according to layer position before installing, i.e. it is used for
The number N of the first room groove 107 of counting, then the pitching sliding bush apparatus equal with the numerical value of meter digital is sequentially connected with oil pipe 3
In lower going-into-well, with packer 4, the oil pipe 3 being provided with pitching sliding bush apparatus being isolated formation pressure break payzone, pitching sliding sleeve shown in Fig. 8 fills
It is set to 3, including counting assembly 1A 1C, plugging device 2A 2C.During use, put into the steel pitching of supporting formed objects
103, when pitching passes sequentially through the counting assembly 1 of each layer position N, trigger a counting action R, be counted as S=N-R, R=0,1,2,
3 ... N, it is counted as decreasing sequence of numbers relation.And during for using counting assembly 3 (seeing Fig. 4), aboveground according to layer before installing
The ratchet 307(that position sets in the counting assembly 3 of this layer of position on orienting cover 302 counts ratchet) numerical value, then will be with counting ratchet
The equal pitching sliding bush apparatus of numerical value be sequentially connected with in oil pipe lower going-into-well, the oil of pitching sliding bush apparatus will be provided with packer 4
Pipe isolation forms pressure break payzone, and pitching sliding bush apparatus shown in Fig. 8 is 3, including counting assembly 3A 3C, plugging device 2A
2C.During use, put into the steel pitching 103 of supporting formed objects, when pitching passes sequentially through the counting assembly of each layer position, trigger
Counting action.When steel pitching 103 falls into undermost pitching sliding bush apparatus, trigger counting dress in this pitching sliding bush apparatus
Put last counting action, and start plugging device.Along with tubing pressure raises, start undermost fracturing work.Afterwards
Often put into a pitching, the most gradually carry out fracturing work.After operation completes, pitching returns to ground with oil tube fluid.
Claims (9)
1. a full-bore pitching sliding sleeve staged fracturing equipment, is characterized in that including what some packers were connected with each packer
Oil pipe and the pitching sliding bush apparatus being sequentially arranged between packer on oil pipe；Described pitching sliding bush apparatus includes with described oil pipe even
Logical and interconnective counting assembly and plugging device, counting assembly and plugging device in all pitching sliding bush apparatus are respectively provided with
Identical internal diameter；Described counting assembly, including the first body, is actively installed on the first body cylinder that is interior and that seal with the first body
Shape slip mandrel and pitching, the inwall of described first body is axially arranged with some first room grooves, described slip mandrel sets
Having upper and lower two group of first lobe door, often organize what the first lobe door was formed by the first lobe block and the first sealing ring, described first lobe block is worn
Cross slide cores shaft wall to be movably arranged on slip mandrel and match with the first room groove in pitching and the first body, described
One sealing ring is located at the top of the first lobe block in barrel and matches with pitching.
Full-bore pitching sliding sleeve staged fracturing equipment the most according to claim 1, is characterized in that described first body is by upper
Joint and cylinder are threaded connection composition, and described first room groove and slip mandrel are located on cylinder；Described slip mandrel
Two ends are provided with the first elastic claw head matched with the first room groove on cylinder up and down；The size of described first lobe block is more than sliding
The wall thickness of moving mandrel；The distance between two the first lobe blocks in described upper and lower two group of first lobe door with adjacent two
Distance between one room groove is unequal.
3. a full-bore pitching sliding sleeve staged fracturing equipment, is characterized in that including what some packers were connected with each packer
Oil pipe and the pitching sliding bush apparatus being sequentially arranged between packer on oil pipe；Described pitching sliding bush apparatus includes with described oil pipe even
Logical and interconnective counting assembly and plugging device, counting assembly and plugging device in all pitching sliding bush apparatus are respectively provided with
Identical internal diameter；It is characterized in that described counting assembly, the orienting cover that including the second body, is located in the second body, turning set,
Opening sleeve and central canal；Described orienting cover and opening sleeve are by being separately fixed at up and down on the second body, and described central canal is set in
Axially move in orienting cover, in the lower end of central canal, be provided with the cushion rubber coordinated with pitching, described orienting cover and the week of central canal
Upwards being respectively equipped with the ratchet of mutual dislocation, described turning set is set on central canal and by the return bullet being located in the second body
Spring supports, and turning set is provided with ratchet and matches with the ratchet on described orienting cover and central canal, and turning set and opening sleeve are in week
To a setting position on formed and move to axial.
Full-bore pitching sliding sleeve staged fracturing equipment the most according to claim 3, is characterized in that described central canal and orientation
Ratchet mutual dislocation 1/2 phase place put；Described turning set moves by leading of being located on turning set to axial with opening sleeve
Match with the axially open being located on opening sleeve or guide pad respectively formation to block or axially open；Described second body is by
Two top connections, the second cylinder and the most threaded composition of housing, described orienting cover, turning set and opening sleeve are located at the second cylinder
In, described central canal is located in the second cylinder and housing, and described return spring is located between described turning set and housing.
Full-bore pitching sliding sleeve staged fracturing equipment the most according to claim 1, is characterized in that described plugging device includes
3rd body, be actively installed in the 3rd body match with slip mandrel in described counting assembly and with the envelope of the 3rd body sealing
Plugging, it is located in the 3rd body and is connected with the 3rd body by the first shearing nail and be positioned at the shear sleeve blocked below pipe, sheathed
The tubular ball seat being connected with closure pipe in closure pipe and shear sleeve and by the second shearing nail；Described closure pipe with shear sleeve it
Between be provided with the second room groove；Being provided with the second lobe door in described ball seat, the second lobe door is made up of the second lobe block and the second sealing ring, institute
State the second lobe block to be movably arranged on ball seat match through ball seat barrel with pitching and the second room groove, described second sealing ring
It is two to be respectively provided at the upper and lower of the second lobe block in ball seat barrel and match with pitching；The inwall of described 3rd body is provided with
Draw-in groove, the draw-in groove that described closure pipe is provided with on the second elastic claw head and the 3rd body matches, on closure pipe and the 3rd body
Be respectively equipped with can be corresponding first, second through hole；In described shear sleeve, lower end is provided with the first seam coordinated with described ball seat,
Lower end in described 3rd body is provided with the second seam coordinated with shear sleeve.
Full-bore pitching sliding sleeve staged fracturing equipment the most according to claim 4, is characterized in that described plugging device includes
3rd body, be actively installed in the 3rd body match with the central canal of described counting assembly and with the closure of the 3rd body sealing
Pipe, it is located in the 3rd body and is connected with the 3rd body by the first shearing nail and be positioned at the shear sleeve blocked below pipe, be set in
The tubular ball seat being connected with closure pipe in closure pipe and shear sleeve and by the second shearing nail；Between described closure pipe and shear sleeve
It is provided with the second room groove；Being provided with the second lobe door in described ball seat, the second lobe door is made up of the second lobe block and the second sealing ring, described
Second lobe block is movably arranged on ball seat through ball seat barrel and matches with pitching and the second room groove, and described second sealing ring is
Two are respectively provided at the upper and lower of the second lobe block in ball seat barrel and match with pitching；The inwall of described 3rd body is provided with card
Groove, the draw-in groove that described closure pipe is provided with on the second elastic claw head and the 3rd body matches, and closure pipe and the 3rd body divide
Be not provided with can be corresponding first, second through hole；In described shear sleeve, lower end is provided with the first seam coordinated with described ball seat, institute
State the lower end in the 3rd body and be provided with the second seam coordinated with shear sleeve.
7. according to the full-bore pitching sliding sleeve staged fracturing equipment described in claim 5 or 6, it is characterized in that described 3rd body by
Center tap, shearing cylinder and lower contact are the most from top to bottom threaded connection composition；Through hole on described 3rd body and draw-in groove
Being located on center tap, described closure pipe is located in center tap；Described first shears nail is located on described shearing cylinder, described shear sleeve
It is located in shearing cylinder；Seam on described 3rd body is located in described lower contact.
Full-bore pitching sliding sleeve staged fracturing equipment the most according to claim 7, is characterized in that described first seam and institute
State the distance between ball seat equal to the distance between described first through hole and the second through hole.
Full-bore pitching sliding sleeve staged fracturing equipment the most according to claim 8, is characterized in that described second seam and institute
State and between shear sleeve, be provided with suitable distance；The size of described second lobe block is more than the wall thickness of ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410221000.4A CN103982167B (en) | 2014-05-23 | 2014-05-23 | A kind of full-bore pitching sliding sleeve staged fracturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410221000.4A CN103982167B (en) | 2014-05-23 | 2014-05-23 | A kind of full-bore pitching sliding sleeve staged fracturing equipment |
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| Publication Number | Publication Date |
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| CN103982167A CN103982167A (en) | 2014-08-13 |
| CN103982167B true CN103982167B (en) | 2016-10-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021225754A1 (en) * | 2020-05-04 | 2021-11-11 | Baker Hughes Oilfield Operations Llc | Indexing valve system for a resource exploration and recovery system |
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| BR112014002189A2 (en) | 2011-07-29 | 2017-03-01 | Packers Plus Energy Serv Inc | well tool with indexing mechanism and method |
| US9765595B2 (en) | 2011-10-11 | 2017-09-19 | Packers Plus Energy Services Inc. | Wellbore actuators, treatment strings and methods |
| CN112049605B (en) * | 2020-09-26 | 2022-11-01 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN114320227B (en) * | 2021-11-15 | 2023-07-28 | 中海油能源发展股份有限公司 | Full latus rectum pressure ball seat that passes after can shearing |
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| CN103982167A (en) | 2014-08-13 |
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Denomination of invention: Staged fracturing apparatus with full-bore ball throwing sliding sleeve Effective date of registration: 20170310 Granted publication date: 20161005 Pledgee: China Co truction Bank Corp Changsha branch Pledgor: Hunan Victor Petroleum Technology Service Co., Ltd. Registration number: 2017430000015 |
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